A. Screw-on Gas Valves

updated 2020-04

Contents:  A. 0A1 to 0A1: 08 mm
Contents:  A. 0A2 to A11: 10 mm
Contents:  A. A12 to A24: 12 mm
Contents:  A. A25 to A30: 14 mm
Contents:  A. A31 to A37: 16 mm
Contents:  A. A37 to A38: 22 mm

Contents:  A. A40 to A41: 14, 16 vacuum types

 


A1. 8x1 male spigot L or R push-pull

A1 8×1 push pull
01z2225169  $20
in is on, out is off
Italy-made by OMG

Links to photos of examples:

1960 Wards Riverside original
1965 Motobecane AV79 original

 

 

 

 

 

 


A2. 10x1 male spigot down

A2 10×1 spigot down
01z2231010   $15
←reserve on↓ off→
made in Italy by OMG

A2b 10×1 down
red handle  $16
←res  on↓ off→

Links to photos of examples:

1977 Pacer P14
1977 Negrini Harvard replacement
1977 Cimatti City Bike (when adapter is missing)
1978 Cimatti City Bike (with no 10-12 adapter)
1978 Motron original (extender on tank)
1978 Concord XKE original
1980 Peugeot 103 LVS replacement

This valve fits hundreds of mopeds and mini-cycles. It fits any tank with a 10×1 threaded hole, and with nothing below or near the valve that would interfere. 

Cimatti rear tanks have a 10×1 threaded hole, but there is a nearby “wall” that prevents a 10×1 male valve from screwing in, unless the whole gas tank is removed. That requires rear wheel and rear fender removal. To make gas valve installation easy, Cimatti added a screw-in 10-to-12 adaptor piece, and used a 12×1 female type gas valve, with a turnbuckle type nut. Only the nut turns, and the “wall” does not matter. So it is much better to reuse the 10-to-12 adaptor, and use a 12×1 spigot right valve, see below.

 


A3. 10x1 male spigot back

A3 10×1 spigot back
01z2291092  $15
←reserve on↓ off→
made in Italy by OMG

Motobecane original  N/A
↑res ←off on↓
made by Quiet

Links to photos of examples:

1977 Intramotor-Gloria Scout
1977 Malaguti Commuter original
1978 Malaguti Commuter original
1978 Baretta Magnum (top tank)
1978 Yankee Peddler original
1979 Cosmo Colt original
1
979 Motobecane 50V original
1980 Cosmo Colt 3 original
1985 Safari 300MT Turbo replacement

 

Motobecane: 1970’s sheet-frame Motobecanes use a A3 type vertical valve, but not in a vertical orientation. Instead it is almost horizontal, at about 70 degrees from vertical. So a spigot-back valve fuel hose goes down, not back. An A4 10 x 1 spigot-left is a better replacement choice. With A3 the fuel hose goes down first, and then slightly uphill before it curves down into the Gurtner carburetor. With A4 the fuel hose goes forward first, and then slightly down hill before curving down to the carb. The A4 allows the fuel hose to be empty when the tank is empty. The A3 with a U-shape hose routing would trap some liquid, just like under a sink drain. Then the bike would have to be leaned to the right to empty the fuel hose completely. 

 


A4. 10x1 male spigot left

A4 10×1 spigot left red
01z2351035  $15
←reserve  on↓ off→,
made in Italy by OMG

A4b 10×1 spigot left
403200  $19
←reserve  on↓ off→,
made in Taiwan by FS

Links to photos of examples:

1977 Motobecane frame A4b replacement
1978 Gitane Sport original
1978 Motobecane frame replacement
1978 Motron Classic A4b replacement
1976 Bianchi Snark original

Any top-tank model, with a 10 x 1 threaded hole on the right side (and nothing nearby) would use this A4 petcock.

Motobecane: This spigot-left valve fits 1970’s sheet-metal-frame Motobecanes, where there is a tight space. It substitutes for the spigot-back original configuration. The fuel hose is routed slightly better than it was with the original valve.

 

 


A5. 10x1 male spigot right

A5 10×1 spigot right
1b15001017  $15
←res  on↓ off→ 
Italy made by OMG

Links to photos of examples:

1976 Itom Automatic
1978 Safari Super Extra
1979-89 Di Blasi R7     #141 on left side
1989-97 Di Blasi R7TB #141 on left side
1996 Di Blasi R7 original

 Any top-tank model, with a 10 x 1 threaded hole on the left side (and nothing nearby) would use this A5 petcock. 

 

 

 

 

 

 


A6. 10x1 male spigot back medium shaft

A6 10×1 spigot back
medium shaft
01b1402283b  $18
←reserve  on↓ off→
Italy-made by OMG

NVT original 10×1 back,
long detachable shaft

Links to photos of examples:

1977 NVT Easy Rider
1978 Scorpion SC2

Like the other 10×1 male valves, the whole valve must turn around and around, to screw on. But the long shaft would usually hit something. That would prevent the valve from screwing on. The original valves had a detachable shaft, held on by a clip. So the valve could be installed or removed without the shaft.

This replacement valve does not have an easily detachable shaft. But the shaft can be removed by loosening the shaft nut. To install the valve, remove the shaft, then screw on the valve, tighten only to a little more than “finger tight”, aim it to face outward or whatever direction is best, then replace the shaft. 

 


A7. 10x1 male spigot down with 15mm extender

A7 10×1 spigot down
short 15mm extender
222836 $23 on-off-res
Taiwan-made by F&S

Links to photos of examples:

1987 Tomos A3 Bullet TT
1993 Tomos A35 Bullet TT

This valve fits early 1987-93 Tomos top tanks with 10×1 internal threads. After 1993 Tomos top tanks have 12×1 external threads and take valve A17b.

The knob has to be removed in order to screw on because the tank wall is too close. Once installed the round knob goes through a one inch hole in the right plastic panel below the tank.

Here it is shown without the metal cup and rubber ring, but those things are included. The 15mm length extension includes the cup and rubber.

 

 

 


A8. 10x1 male spigot down with 20mm extender

A8 10×1 spigot down
20mm extender
01z2231010-b $29
←reserve on↓ off→
Italy-made by OMG

Links to photos of examples:

1978 Pacer Sport P78 original A8 (can use A2)
1980 Motron Fairway no tank extender (can use A2)
1980 AMF Roadmaster 140 original A8
1983 AMF Roadmaster 140 replacement

A8 This valve is an A2 plus a C10.195 extender. The extender costs as much as the valve, so when replacing a 10mm valve that has an extender it is better to re-use the extender.

AMF with Minarelli: The 1980-83 AMF Roadmaster 140, 141 with Minarelli V1 mid-engine is another model that needs a short extender to position the valve knob to go through the hole in the body panel. This A8 replacement shown in the link fits, but the end of the handle must be ground off.

 

 


A8b. 10x1 male spigot left with 20mm extender

1978 Malaguti Pilot original A8b (can use A4)
1980 Pacer Super Sport original A8b (can use A4)

 

A8b This valve is an A4 plus a C10.195 extender. This configuration was on Malaguti Pilot and Baretta Magum. Can use just A4 without extender.

 

 


A8c. 10x1 male spigot right with 20mm extender

1980 Peugeot 102SP original A8c
1980 Peugeot 102SP original A8c

A8c This valve is an A5 plus a C10.195 extender. This configuration was on 1980 Peugeot 102 SP (US model) and others.

Peugeot 102: On 1980 Peugeot 102 there is a wall that prevents the valve from being screwed in, unless there is an extender piece between the valve and the tank. This model must have the extender present.

 

 


A9. 10x1 male spigot down with 26mm extender

A9 10×1 spig. down
26mm extender
01z2231010-c $29
←res on↓ off→
Italy-made by OMG

This 10×1 spigot down valve has a 26mm extender that positions the valve lower, away from the bottom of the tank. The 26mm extender includes a longer reserve tube.

When an extender is added to a valve, the reserve tube needs to be longer. When the reserve tube is too short, there is little or no reserve. Here the original reserve tube has been replaced with a longer one, 60mm from the valve base instead of 35mm.

Any of the other 10×1 male valves can have a 15, 20, or 26mm extender added. Some already have long reserve tubes.

 

 

 

 

 

 


A10. 10x1 male spigot left with 26mm extender

A10 10×1 spigot left
26mm extender
2231010-b $29
←reserve on↓ off→

At left is a used leaking original, not for sale. An unknown application.

At right is a new replacement, for sale. It is either a 403200 (shown) or 01z2351035 (red) valve, with a 1 inch extender.

It includes a 1 inch longer reserve tube and both outer seal rings.

 

 

 

 

 

 


A11. 10x1.25 male spigot right

A11 10×1.25 male right
634982 $18
adjustable height
made in China

This valve fits tanks with M10-1.25 female thread

None of the mopeds on this site have this thread. It may be for Chinese motorized bicycle gas tanks.

No reserve just OFF and ON.

Nut adjusts vertical height to fit closer or farther from tank.

Direction adjusts 360 degrees (like most others).

 

 

 

 


A12. 12x1 male spigot down

A12 12×1 male sp down
01z4011005   N/A
←reserve  on↓ off→
made in Italy by OMG

Links to photos of examples:

90’s Peugeot Vogue

This 12×1 valve is a male thread, right hand (clockwise is tighter). All other 12×1 valves are female thread and have a turnbuckle nut with both left and right hand thread. With the turnbuckle nut removed, the other 12×1 valves are male thread, left hand (clockwise is looser).

Because the whole valve must be screwed in to install it, the handle knob detaches with a clip.

This valve fits a Peugeot Vogue, perfectly.

 

 

 


A13. 12x1.25 male spigot left

A13 12×1.25 male sp left
custom adapter  N/A
left is original,
right is replacement

A13b 12×1.25 male
01z4011005-b   N/A
←reserve  on↓ off→
made in Italy by OMG

Links to photos of examples:

1978 Speed Bird BP48
1979 Angel BP48S

Speedbird BP48 and Angel BP48-S, tube frame models made in Taiwan by TYM, use this valve. The 1.25 thread is more coarse than 1.0.

A13 is an A4 plus a custom made adapter, 10×1.00 female to 12×1.25 male thread.

A13b is an A12 re-threaded to M12-1.25. Since it has a soft rubber o-ring seal, it is only tightened by hand. So the threads do not need much strength. This allows the weakened re-threads to work.

 


A14. 12x1 female spigot down

 

A14 12×1 spig. down
01B1351048  $20
←reserve  on↓ off→
Italian made OMG

A14b 12×1 sp down
403100R  N/A
←reserve  on↓ off→

Links to photos of examples:

1977 Batavus VA original
1978 Kreidler MP-9 with spigot down
1978 Sears Free Spirit silver original
1978 Sears Free Spirit red original
1979 Columbia 2220 with spigot down
1980 Concord Freedom with spigot down
1988 Motomarina Sebring original
2000 Kinetic TFR-USA original

This valve fits many mopeds. It is sometimes called “universal”, but it is not truly universal.

 

 

 


A15. 12x1 female spigot back

A15 12×1 spigot back
01B1451015   $20
←reserve  on↓ off→
OMG made in Italy

Links to photos of examples:

1977 Garelli Sport original made by BAP
1977 Moto Guzzi Chiu original (lies above engine covers)
1978 Garelli Rally Sport original
1978 JC Penney Pinto original
1979 Batavus Starflite original
1980 AMF Roadmaster 130 original
1980 AMF Roadmaster 130
1980 Garelli VIP original
1980 Garelli Super Sport original
1983 Garelli Basic original (lies below engine cover)
1984 Garelli Basic original, needs long reserve tube due to the tank extension
1984 Garelli Monza GT original
1990’s Hero Panther, Pacer, Gizmo original

 

 

 


A16. 12x1 female spigot back with clear trap

A16 12×1 spigot back
clear sediment trap
01z2101024  $16
←reserve  on↓ off→
made in Italy by OMG

PA50 original

Links to photos of examples:

1978 Honda PA50 Hobbit tank
1978 Honda PA50 Hobbit original
1993 Hero Panther original
2000 Kinetic TFR-USA original
2002 Whizzer with the tank hole drilled bigger

This valve has a clear sediment trap. Anything heavier than gasoline, like water, dirt, rust settles at the bottom. The trap not only filters, but allows visual monitoring of the fuel for purity.

Whizzer The 2002 Whizzer tank takes a 12×1 thread gas valve. But the original Whizzer valve has no reserve tube or fuel filter. To have those, the 6.3mm hole can be drilled to 7.0mm. Here it is shown with a A16 “spigot back” type valve, but a A18 “spigot right” type would be better.

 


A17. 12x1 female spigot left

A17 12×1 spigot left
01z2361059    $15
←reserve  on↓ off→
made in Italy by OMG

A17c 12×1 sp. left
403300    $15
←res  on↓  off→
made in Taiwan

Links to photos of examples:

1978 Sachs Westlake with spigot left
1978 Cimatti Town Bike original
1979 Batavus Starflite with spigot left
1979 Sachs Balboa with spigot left
1979 Columbia 2250 (tube frame, Solo engine)
1979 Columbia 2260 (tube frame, Sachs engine)
1980 Sachs Seville original
1980 Sachs Prima original
1985 Tomos Bullet original
1994 Tomos Sprint original
1998 Tomos Sprint original
2000 Avanti Autopower original
2001 Avanti Kobra original
2001 Avanti Super Sport original

Columbia with tube frame:The original valve on a Columbia Commuter (tube frame) was a vertical mount valve, mounted in the sideways position. So the valve faces up, instead of sideways. That is not bad, but the poor handle gets kicked easily since it is right where you step through the frame at. The original valve had a reserve tube that curved upward, like on a Puch side mount. The replacement valve has a short straight reserve tube. Sideways installation disables the reserve feature. Optionally, a longer curved soft aluminum reserve tube is available. See below.

 


A17b. 12x1 female spigot left with extended round knob

A17b 12×1 spigot left
round knob
401602 $18
←reserve  on↓ off→
made in Taiwan by FS

Links to photos of examples:

2007 Tomos LX

This valve was made to replace Tomos 229.455, on 1994-2013 top tanks. Before 1994 was 10×1 male.

 

 

 

 

 

 


A18. 12x1 female spigot right

A18 12×1 spigot right
01z2391037  $16
↑res ←off  on↓
made in Italy by OMG

A18b 12×1 spigot right
5322-A  $15
←res  on↓ off→
Italy-made by Franconi

Links to photos of examples:
1976 Flandria Bermuda Hampton (cover hole widened)
1977 Flandria Bermuda Hampton (no cover no petcock)
1978 Flandria Bermuda Pembroke
1978 Vespa Bravo original
1978 Vespa Bravo gas tank original
1978 Cimatti City Bike (when 10-12 adaptor is there)
1978 JC Penney Pinto (no petcock)
1979 Columbia 2220 (sheet frame) original
1979 Columbia 2220 (sheet frame) with spigot down
1979 Batavus Starflite with spigot right
1982 Batavus Mondial with spigot right
1980 Columbia Medallion (top tank) original
1981 Murray 8320 original
Tomos 233727 gas valve original
2007 Tomos Sprint with 233727
1980 Sachs Prima original
1969 Honda PC50

Columbia sheet frame: The sheet metal frame Columbia is different from a tube frame Columbia. It can have different marketing names. Original valve was spigot right, but down, back, or left also fit.

Tomos A55: All Tomos models with the A55 engine have a 12×1 spigot right gas valve #233727, above the left side of the engine. Earlier A35 models had a opposite valve on the opposite side. 

Vespa Bravo: This screw-on valve is for Vespa Bravos with a metal tank. Some have a plastic gas tank, with a different gas valve than this. See clamp-on valves below.

Flandria Bermuda: Bermuda (made by Flandria) mopeds use this vertical 12×1 spigot right valve, but in the horizontal position. There is no reserve function. The owners manual says that either rear or forward is closed (off), and outward is open (on). The valve handle is protected behind the cover. There is a finger width long slot in the right cover, for one-finger access. 

 


A19. 12x1 female spigot back short extended knob

A19 12×1 spigot back with short shaft
Left is original, right is replacement
It is a A15 with a longer handle shaft   $27
←reserve  on↓ off→   OMG made in Italy

Links to photos of examples:

1985 Garelli Rally SL original
1985 Garelli Rally SL original

Garelli 1980-86: This valve is made for the 1980-86 Garelli Sport, Rally Sport, Rally SL step-thru models with side panels that cover everything up to the bottom of the gas tank. The valve handle shaft passes through a hole in the panel.

The replacement sticks out a few mm farther than the original. Not bad.

 

 

 


A20. 12x1 female spigot left medium shaft

A20 12×1 spigot left
medium shaft
229169  $22
←reserve  on↓ off→
Taiwan-made by FS

Links to photos of examples:

1978 Moto Guzzi Robin original
1979 Benelli G2 original
1995 Tomos Targa original
1998 Tomos Targa original
2005 Tomos ST original

Benelli G2 The valve shaft sticks out of a small hole in the plastic side cover. The handle knob must be pryed off (with two screwdrivers on opposite sides), to get the shaft through the hole in the plastic side cover. The valve must be aimed just right. It might take 2 or 3 guesses to get the shaft aimed at the hole. Then the plastic cover is replaced, and then the handle knob is pressed back onto the shaft.

 

 

 


A21. 12x1 female spigot right medium shaft

A21 12×1 spigot right
long shaft 5321 $15
←reserve  on↓ off→
Italy-made by Mec Eur

Links to photos of examples:

1978 Baretta 44 original
1978 Vespa Grande original
1979 Vespa Grande frame with no valve
1979 Vespa Grande with spigot right
1980 Vespa Si original
1985 Vespa Si frame with original valve

Vespa Grande: The Vespa Grande has a vertical type valve, but it is mounted at an angle of about 60 degrees from vertical, or “2 o’clock”, as seen in the red frame photo. Although the spigot direction is wrong, this still works fine on a Vespa Grande. The gas has to go uphill a little at first, but the gas hose stays below the bottom of the gas tank (when routed under the throttle cable like shown below). So it will flow gasoline all the way to empty.

Tomos Targa: While the Tomos Targa valve works on a Vespa Si, the opposite is not true. The Tomos engine is too close, unless the cover is left off and the valve is rotated.

 


A22. 12x1 female spigot right long shaft

A22 12×1 rt. long shaft
01z2691051 $19
←reserve  on↓ off→
made in Italy by OMG

Links to photos of examples:

1978 Benelli G2, A22 is too long

Benelli G2 This A22 valve has a round aluminum shaft that is 56mm long, too long for a Benelli G2 or Moto Guzzi Robin. It needs to be 15 to 25mm shorter. Use A20.

 

 

 

 

 


A23. 12x1 female side mount Ciao

A23 12×1 side mount 5320   $18 
 ←reserve  on↓ off→
Italy-made by Franconi

A23b 12×1 side mt. 
01Z2141023A  $18   
←reserve  on↓ off→
 Italy-made by OMG

Links to photos of examples:

1974 Vespa Ciao frame

This valve fits a Vespa (Piaggio) Ciao. It can also fit a Puch Maxi type frame, but the upper filter hits the inside upper wall of the Puch gas tank. The reserve tube, which is a light press fit, can simply be rotated so it is not aimed straight up, to allow a Ciao valve to fit a Puch.

 

 

 


A24. 12x1 female side mount Maxi

A24 12×1 side mt.
01z2141069a  $18
←reserve  on↓ off→
Italy-made by OMG

A24b 12×1 side mount
401400  $18
⇐reserve  on⇓  off⇒
made in Taiwan

Links to photos of examples:

1976 Intramotor-Gloria Blanco original
1977 Intramotor-Gloria Blanco original
1977 Puch Maxi Sport original
1978 Puch Maxi original
1978 Puch Sport MKII with A24b
1984 Puch Maxi Sport LS original

Puch Maxi: The most popular 1970’s moped in the USA uses this valve. Puch Maxi and Maxi equivalents GN, Rigid, Sport, Sport MkII, Newport, Newport-L, Newport II and Maxi II all have the same sheet-metal gas tank built into the frame. The gas valve is on the right side mounted horizontally. 

 


A25. 14x1 female spigot down

A25 14×1 sp. down
633783  $19
↑reserve ←off on↓
made in China

Links to photos of examples:

1980 Honda NA50 Express II original
1980 Yamaha QT50 (left is A25 substitute, right is original)

This spigot down valve was original on 1979-81 Honda NA50 Express II. It also replaces the original spigot left on Honda NC50 Express, and the original spigot right on Yamaha QT50 Yamahopper.  

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

This valve has a 6.0mm spigot, for 3/16″ (4.8mm) hose.

 

 

 


A26. 14x1 female spigot left

A26 14×1 sp. left
golden $18
↑reserve ←off on↓
made in China

Links to photos of examples:

1978 Honda NC50 Express original valve
1980 Honda NC50 Express original
1981 Honda NC50 Express original
1979 Oakwood Catalina replacement (orig. was spigot-right)

 

This spigot left valve was original on Honda NC50 Express. It also substitutes for other 14×1 thread valves, including Yamaha QT50 (spigot right), Honda NA50 (spigot down), Trac Eagle (side mount), and most Taiwan-made mopeds (mostly spigot back).

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

This valve has a 6.5 mm spigot, for a 3/16″ (4.8mm) hose, or a 1/4″ (6.3mm) hose with clamps.

 


A27. 14x1 female spigot right

A27 14×1 spigot right
01z3234229 $25
↑reserve ←off on↓
Italy-made by OMG

Links to photos of examples:

1978 Moprix top tank original
1980 Yamaha QT50 (left is A25 substitute, right is original)
1979 General 5-Star ST original (use A28 or A26)

This valve configuration was original on Yamaha QT50, early Yamahas and Hondas, and early Taiwan mopeds. It can replace other 14×1 thread valves, in most cases.

This motorcycle fuel valve has a 7.7 mm spigot, for 1/4″ (6.3mm) fuel hose.

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

 

 


A28. 14x1 female spigot back

A28 14×1 sp back
with trap   $30
↑reserve ←off on↓
General original

A28a 14×1 spigot back
01z3264268 N/A
↑reserve ←off on↓
Italy-made by OMG

Links to photos of examples:

1977 Lazer Sport 50 original
1978 AMS Sierra 50 original
1984 Trac Image original
1985 General 5-Star original

Many of the original valves had poorly made cast nuts. The nuts were too big and also weak. When fully tightened they would strip. Some have good nuts, but after 35 years the rubber seal disk inside is brittle and deformed. All of the mopeds listed that came with a spigot-back gas valve, can take a less expensive spigot down or spigot left valve.

The A28a valve has a 7.7 mm spigot, for 1/4″ (6.3mm) fuel hose.

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

 


A29. 14x1 female side mount

A29 14×1 side mount
original  Not Available
A26 14×1 spigot left
substitute $18 no res.

Links to photos of examples:

1983 Trac Eagle original (installed at an angle)

The upper valve is an original Trac 14×1 side mount, made in Korea.
All their inner seal disks have decomposed.
But there is a replacement inner seal disk D2 for $8 see below.

The lower one is a modern Honda substitute, made in China. It is a 14×1 vertical mount spigot left mounted sideways. The cover panel must be removed, or a large hole cut, to allow access to the substitute valve. There is no reserve capacity on the substitute, since the reserve tube is horizontal. 

 

 

 

 


A30. 14x1.25 male spigot down

A30 14×1.25 spigot down
D400181  $26
←res  on↓ off→
made in Spain by Ideal

Links to photos of examples:

1978 Derbi Laguna original
1980 Derbi C5 Diablo original
1985 Derbi RD50 original

This motorcycle valve has a 7.7 mm spigot, for 1/4″ (6.3mm) fuel hose.

 

 

 

 

 

 


A31. 16x1 female spigot down

A31 16×1 spigot down
01z2271026  $15
←reserve  on↓ off→
made in Italy by OMG

A31b 16×1 spigot down
408200 $18
←reserve  on↓ off→
made in Taiwan

Links to photos of examples:

1956 Puch VS50 (Euro)
1963 Sears Allstate original
70’s Sparta Buddy original
1977 Sparta Foxi original

 

 

 

 

 

 

 


A32. 16x1 female spigot back

A32 16×1 spigot back
01z2331027  $16
←reserve  on↓ off→
made in Italy by OMG

Links to photos of examples:

1982 Jawa Supreme with A31 spigot down
1979 Kynast Flying Dutchman original
1978 Puch Magnum original Karcoma
1986 Puch Cobra original
1977 Solo Odyssey with spigot left
70’s Sparta Lucky (Euro)
1970 Gemini SST 80 mini trail

 

 

 

 

 

 


A33. 16x1 female side mount

A33 16×1 side mount
original Paoli Not Avail.
A32 16×1 spigot back
mounted horizontally

Links to photos of examples:

1977 KTM Foxi original
1978 KTM Foxi original

The A33 upper valve is an original Paoli 16×1 side mount valve, made in Italy. All their polyurethane inner seal disks have decomposed, even on the last few new valves.

The A32 lower valve is a modern OMG substitute, made in Italy. It is valve A32, a 16×1 vertical mount spigot back, mounted sideways.  The cover panel must be removed, or a large hole cut, to allow access to the substitute valve. There is no reserve capacity on the substitute, since the reserve tube is horizontal.

 

 

 


A34. 16x1 female spigot back

A34 16×1 spigot back
A32 with res. tube $28

Links to photos of examples:

1977 KTM Foxi original
1978 KTM Foxi original

This is valve A32 with a curved-up aluminum reserve tube added, for side mount use on KTM.  The cover panel must be removed, or a large hole cut, to allow access to the substitute valve. There is a reserve capacity on this valve, because the reserve tube curves upward. So the “on” inlet is 2 inches higher than the “reserve” inlet. The bottom 2 inches of the gas tank would be reserve.

 

 

 


A35. 16x1.5 female side mount

A35 Indian 16×1.5 side-mount   Not Available

A  turnbuckle nut     none  M16-1.5 R and L
B  outer seal ring     none  12 x 16 x 2
Bs  B substutute     $3.00 13 x 17 x 2
C  valve body  xxx   none  20.9 ID
D  trap filter disk     none  19 x 1.5
E  trap seal ring  x  $3.00 15 x 19 x 2
F  trap cup xxxxx    $5.00 M20-1.0 thread (Trac Eagle)
seal disk xxxx    $9.00 20.5 x 3.25 4-hole D10
H  handle plate x     none  21.3 OD
I   wave washer (2)  none  20 x 16 x 0.3
J   face plate  xxxx   none  17 ID
K  face screw (2)    
$1.50 M3 x 6

 

A35 is an original Indian 16×1.5 side mount, made in Taiwan. All 3 rubber seals have decomposed.

The 2 seal rings do not normally leak if they are undisturbed, but the seal disk does. There are two ways the seal disk can leak.

1) It can keep supplying the carburetor with gasoline when in the OFF position. This leak can be stopped temporarily by pinching the fuel hose with a small vise grip or C clamp.

2) It can leak gasoline outside of the valve when the handle is in any position. Other things besides the seal disk can cause this kind of leak. Some of those things are: improper assembly, damaged handle plate, missing wave washer, damaged valve body, pieces of the old seal disk still stuck to the valve body sealing surface.

Outer seal ring: The 17mm substitute outer seal ring sits in a 16 mm groove. But it has to fold to pass over 14.5 mm thread tops on its way in, Once in it can be unfolded and does fit, but tightly.


A36. 16x1.5 female spigot right

A36 (bottom) 16×1.5 spigot right $20
↑reserve ←off on↓ made in Taiwan

This is a vertical mount valve for ’82-83 Honda NC50I Iowa, and some 60’s and 70’s Honda motorcycles and ATV’s.

Indian valve substitute: The threads fit an Indian 4-stroke moped. This valve A36 will substitute for an Indian gas valve A35, but the cover panel would have to be left off. With the cover on you cannot reach the handle.

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

A36a with reserve $34

 

A36 is a modern substitute 16×1.5, made in Taiwan. It is a vertical design, mounted horizontal. The cover panel must be removed, or a large hole cut, to allow access to the substitute valve. There is no reserve capacity on the substitute, since the reserve tube is horizontal.

A36a is valve A36 with a added aluminum reserve tube that curves upward.

 


A37. 16x1.5 female spigot down

16×1.5 spigot down  N/A
16950-045-005   Off-On only

In most cases, spigot right (above) can substitute for spigot down. The valve can be aimed at any angle, so “right” can become “back”.

Honda Design: Note that the little arrow on the handle points opposite to the handle. So off is arrow left (handle right), on is arrow up (handle down), reserve is arrow down (handle up).

 

 

 

 


A38. 22x1 female spigot down

A38 22×1 spig. down
for 70’s Jawa   $22
←res on↓ off→

Links to photos of examples:

1978 Jawa 207 original
1979 Jawa 207 original
Jawa 207 with A38 installed with cover off

The chrome replacement Jawa petcock A38 is at left. Original is at right.  The handle does not stick out of the hole in the side cover like the original did. So it is a little hard to reach but not too hard.

 

 

 

 

 

 


A40. 14x1 female vacuum-operated automatic

A40 14×1 vacuum
G2IX9 634176 
Honda NX50 $15

Replaces Honda 16950-187-671 and 16950-GN2-671. 6mm hose spigots

Links to photos of examples:

1981 Honda NX50 original

 

 

 

 

 

 


A41. 16x1.5 female vacuum-operated automatic

A41 vacuum petcock M16-1.5 thread $22