Valve Stem

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Gold Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Gold Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 2m
DUDDS DICE ORANGE OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) DUDDS DICE ORANGE OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 1d 6h 40m
DUDDS DICE PURPLE GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY 2 PACK DUDDS DICE PURPLE GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY 2 PACK Paypal US $6.00 1d 6h 40m
VIOLET DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA (2) VIOLET DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA (2) Paypal US $6.00 22d 20h 28m
DUDDS DICE BLACK w/RED DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA MOTORCYCLES DUDDS DICE BLACK w/RED DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA MOTORCYCLES Paypal US $6.00 19d 18h 58m
DUDDS DICE RED OPAQUE w/BLACK  DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, ETC DUDDS DICE RED OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, ETC Paypal US $6.00 25d 18h 3m
Innovations ALLOY Valve Stem Adapters - converts or aadapts Presta to Schrader Innovations ALLOY Valve Stem Adapters - converts or aadapts Presta to Schrader Paypal US $4.99 23d 2h 50m
PRESTA stem savers valve adapters and rim protectors PRESTA stem savers valve adapters and rim protectors Paypal US $4.49 23d 2h 50m
DUDDS DICE IVORY DICE VALVE STEM CAPS FITS VESPA SCHWINN BMX MOTORCYCLES DUDDS DICE IVORY DICE VALVE STEM CAPS FITS VESPA SCHWINN BMX MOTORCYCLES Paypal US $6.00 19d 18h 56m
DUDDS DICE ORANGE GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKES DUDDS DICE ORANGE GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKES Paypal US $6.00 20d 21h 59m
Purple Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Purple Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 1m
Blue Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Blue Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 59m
DUDDS DICE PINK OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKE DUDDS DICE PINK OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKE Paypal US $6.00 19d 4h 55m
DUDDS DICE BLACK w/WHITE DICE VALVE STEM CAPS 2 PACK FITS SCHWINN, BMX, HARLEY DUDDS DICE BLACK w/WHITE DICE VALVE STEM CAPS 2 PACK FITS SCHWINN, BMX, HARLEY Paypal US $6.00 24d 4h 1m
DUDDS DICE GREEN GEM DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA, HARLEY ETC. DUDDS DICE GREEN GEM DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA, HARLEY ETC. Paypal US $6.00 23d 3h 57m
Red Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Red Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 3m
DUDDS DICE PINK SWIRL DICE VALVE STEM CAPS (2) PACK  FITS SCHWINN BMX VESPA DUDDS DICE PINK SWIRL DICE VALVE STEM CAPS (2) PACK FITS SCHWINN BMX VESPA Paypal US $6.75 22d 17h 15m
YELLOW OP w/BLACK DOTS DICE VALVE STEM CAPS FITS BMX YELLOW OP w/BLACK DOTS DICE VALVE STEM CAPS FITS BMX Paypal US $6.00 26d 17h 51m
NEW 'VELO'ENDZONE SEAT,DIAMOND GRIPS,PINK CHAIN AND DICE VALVE STEM COVERS,BMX NEW 'VELO'ENDZONE SEAT,DIAMOND GRIPS,PINK CHAIN AND DICE VALVE STEM COVERS,BMX Paypal US $28.99 22d 17h 52m
GRAY OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) GRAY OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 26d 8h 43m
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Valve Stem
Valve Stem
I'm trying to pressurize a cast iron radiator ,I've got a tire valve stem that's .45 inches in diameter. What


size hole should I drill in the plastic plug cap for the radiator to get the valve stem to fit right? Thanks.
how else could I do it?

call a garage and see what size holes are in tire rims...or if you have an old rim around , find the drill bit that will fit the hole in it...



No items matching your keywords were found.


No items matching your keywords were found.


Gold Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Gold Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 2m
DUDDS DICE ORANGE OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) DUDDS DICE ORANGE OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 1d 6h 40m
DUDDS DICE PURPLE GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY 2 PACK DUDDS DICE PURPLE GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY 2 PACK Paypal US $6.00 1d 6h 40m
VIOLET DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA (2) VIOLET DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA (2) Paypal US $6.00 22d 20h 28m
DUDDS DICE BLACK w/RED DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA MOTORCYCLES DUDDS DICE BLACK w/RED DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA MOTORCYCLES Paypal US $6.00 19d 18h 58m
DUDDS DICE RED OPAQUE w/BLACK  DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, ETC DUDDS DICE RED OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, ETC Paypal US $6.00 25d 18h 3m
Innovations ALLOY Valve Stem Adapters - converts or aadapts Presta to Schrader Innovations ALLOY Valve Stem Adapters - converts or aadapts Presta to Schrader Paypal US $4.99 23d 2h 50m
PRESTA stem savers valve adapters and rim protectors PRESTA stem savers valve adapters and rim protectors Paypal US $4.49 23d 2h 50m
DUDDS DICE IVORY DICE VALVE STEM CAPS FITS VESPA SCHWINN BMX MOTORCYCLES DUDDS DICE IVORY DICE VALVE STEM CAPS FITS VESPA SCHWINN BMX MOTORCYCLES Paypal US $6.00 19d 18h 56m
DUDDS DICE ORANGE GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKES DUDDS DICE ORANGE GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKES Paypal US $6.00 20d 21h 59m
Purple Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Purple Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 1m
Blue Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Blue Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 59m
DUDDS DICE PINK OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKE DUDDS DICE PINK OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, BIKE Paypal US $6.00 19d 4h 55m
DUDDS DICE BLACK w/WHITE DICE VALVE STEM CAPS 2 PACK FITS SCHWINN, BMX, HARLEY DUDDS DICE BLACK w/WHITE DICE VALVE STEM CAPS 2 PACK FITS SCHWINN, BMX, HARLEY Paypal US $6.00 24d 4h 1m
DUDDS DICE GREEN GEM DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA, HARLEY ETC. DUDDS DICE GREEN GEM DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA, HARLEY ETC. Paypal US $6.00 23d 3h 57m
Red Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Red Ano BMX Bike handlebar Stem Bolts, Axle Nuts, Crank Bolts & Valve Caps Paypal US $19.99 20d 1h 3m
DUDDS DICE PINK SWIRL DICE VALVE STEM CAPS (2) PACK  FITS SCHWINN BMX VESPA DUDDS DICE PINK SWIRL DICE VALVE STEM CAPS (2) PACK FITS SCHWINN BMX VESPA Paypal US $6.75 22d 17h 15m
YELLOW OP w/BLACK DOTS DICE VALVE STEM CAPS FITS BMX YELLOW OP w/BLACK DOTS DICE VALVE STEM CAPS FITS BMX Paypal US $6.00 26d 17h 51m
NEW 'VELO'ENDZONE SEAT,DIAMOND GRIPS,PINK CHAIN AND DICE VALVE STEM COVERS,BMX NEW 'VELO'ENDZONE SEAT,DIAMOND GRIPS,PINK CHAIN AND DICE VALVE STEM COVERS,BMX Paypal US $28.99 22d 17h 52m
GRAY OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) GRAY OPAQUE w/BLACK DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 26d 8h 43m
DUDDS DICE RED GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, HARLEY,ETC DUDDS DICE RED GEM w/WHITE DOTS DICE VALVE STEM CAPS 2 PACK FITS BMX, HARLEY,ETC Paypal US $6.00 25d 18h 55m
DUDDS DICE SMOKED GEM 2 PACK DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY DUDDS DICE SMOKED GEM 2 PACK DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA HARLEY Paypal US $6.00 29d 16h 59m
Lt. BLUE w/WHITE DOTS DICE VALVE STEM CAPS (2) Lt. BLUE w/WHITE DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 26d 8h 32m
GREEN OPAQUE w/WHITE DOTS DICE VALVE STEM CAPS (2) GREEN OPAQUE w/WHITE DOTS DICE VALVE STEM CAPS (2) Paypal US $6.00 26d 8h 21m
DUDDS DICE RED OPAQUE w/WHITE DOTS DICE VALVE STEM CAPS (2 PACK) DUDDS DICE RED OPAQUE w/WHITE DOTS DICE VALVE STEM CAPS (2 PACK) Paypal US $6.00 25d 16h 50m
DUDDS DICE CLEAR GEM w/WHITE DOTS DICE VALVE STEM CAPS FITS HARLEY, BMX, VESPA DUDDS DICE CLEAR GEM w/WHITE DOTS DICE VALVE STEM CAPS FITS HARLEY, BMX, VESPA Paypal US $6.00 21d 18h 19m
DUDDS DICE BLACK/WHITE GEMINI DICE VALVE STEM CAPS FIT SCHWINN, BMX, HARLEY DUDDS DICE BLACK/WHITE GEMINI DICE VALVE STEM CAPS FIT SCHWINN, BMX, HARLEY Paypal US $6.00 21d 17h 32m
DUDDS DICE LT. BLUE DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA DUDDS DICE LT. BLUE DICE VALVE STEM CAPS FITS SCHWINN, BMX, VESPA Paypal US $6.00 19d 6h 41m
YELLOW GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA YELLOW GEM DICE VALVE STEM CAPS FITS SCHWINN BMX VESPA Paypal US $6.00 8d 4h 50m
ICE GREEN SWIRL DICE VALVE STEM CAPS FITS SCHWINN, BMX ICE GREEN SWIRL DICE VALVE STEM CAPS FITS SCHWINN, BMX Paypal US $6.75 7d 5h 4m
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(2) Clear Blue Dice Old School BMX Tire Stem Valve Caps Covers (2) Clear Blue Dice Old School BMX Tire Stem Valve Caps Covers Paypal US $5.95 15d 18h 3m
(2) Yellow Gold Dice Old School BMX Tire Stem Valve Caps Covers - PAIR (2) Yellow Gold Dice Old School BMX Tire Stem Valve Caps Covers - PAIR Paypal US $5.95 16d 21h
(2) Clear Green Dice Old School BMX Tire Stem Valve Caps Covers (2) Clear Green Dice Old School BMX Tire Stem Valve Caps Covers Paypal US $5.95 16d 20h 20m
Mongoose Mongoose "MAURICE" BMX Valve Stem Caps N.O.S.Chrome old mid new school freestyle Paypal US $17.95 26d 19h 33m
Air Wear bmx valve stem caps bike grip style black like the old school trick top Air Wear bmx valve stem caps bike grip style black like the old school trick top Paypal US $8.49 20d 17h 31m
(2) Pink Dice Old School BMX Tire Stem Valve Caps Covers - PAIR (2) Pink Dice Old School BMX Tire Stem Valve Caps Covers - PAIR Paypal US $5.95 16d 20h 37m
(2) Clear Red Dice Old School BMX Tire Stem Valve Caps Covers (2) Clear Red Dice Old School BMX Tire Stem Valve Caps Covers Paypal US $5.95 16d 20h 12m
Air Wear bmx valve stem caps bike grip style PURPLE- old school trick top Air Wear bmx valve stem caps bike grip style PURPLE- old school trick top Paypal US $9.49 12d 42m
Air Wear bmx valve stem caps bike grip style black -the old school trick top Air Wear bmx valve stem caps bike grip style black -the old school trick top Paypal US $8.49 12d 39m
Air Heads Wheeler Dealer Vintage Bike Bicycle Tire Valve Stem Caps #2421 Dog 2 Air Heads Wheeler Dealer Vintage Bike Bicycle Tire Valve Stem Caps #2421 Dog 2 Paypal US $19.97 2d 4h 49m
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Bad valve stem seals?

Basic Rules to Choose Suitable Valves For Your Applications - Part 1

In general, specifications, types and working pressure are always indicated when purchasing the valves. However, the information is inadequate for you to buy the suitable valves for your applications, especially in such competitive markets. In order to stand out among the competitors, each valve factory innovates the design and manufacture of the valves, though the basic standards remain the same. It leads to product variations from manufacturer to manufacturer. Therefore, it is suggested to bring up technical requirements as detailed as you can and come to consensus with the manufacturers.

1. Basic Standards
1.1 Valve specifications and types should conform to the documents.
1.2 Product numbers to should follow the international standards. If valve is numbered by manufacturers themselves, documents about the number systems are needed.
1.3 The actual pressure the valves can take should be bigger than that of real applications. 1.4 The valves should be manufactured according to international standards. If produced to manufacturers' standards, related documents are needed.

2. Valve Materials
2.1 Valve body should be made of ductile iron. Material code and testing data should also be included.
2.2 Valve stem should be made of stainless steel.
2.3 Screw should be made of brass or bronze, and its hardness and strength are bigger than stems.
2.4 The hardness and strength of sleeve has to be smaller than that of stem.
2.5 Packing materials differ based what kind of valve it is.
2.6 Stem filler should choose materials which won't deteriorate for decades.

3. Transmission Gearbox
3.1 The body of box is made of anti-corrosive materials, same with valve body
3.2 Sealing unit is necessary, and the box should bear soaking in water of 3 square meters.
3.3 On-off operation only makes valve shaft to rotate, and other parts remain the same.
3.4 There are no unrelated stuff in the box. The connection between gear tooth are applied by lubricant.

About the Author

Tracey Hermans is marketing director of Valve Biz, www.valve-biz.com.
Valve Biz is a B2B trading portal designed for valve industries.

5 comments to Valve Stem

  • J L

    Are you speaking about a recip compressor?

    Either way the crankshaft turns – rotational motion. The connecting rod attachings to the crankshaft and the piston. It is the piect the converts the rotational motion to linear motion. The piston moves in linear motion and compresses the gas in the chamber.

    Not really sure what your remaining questions are specifically referring to. This is hard to describe without diagrams.

  • maheo

    I''ve been using Caffelatex since GT first introduced it and let me know where to get it. Two sets of wheels, tubeless and non tubeless tires, Stan's injector, valve stems and tape, outlasts Stan's, and as GT stated, you don,t know it's working because you don't flat. I got lazy, Stan's had given up, just added the caffe and rode, love the stuff. I'm in central Texas, lots of cactus, before tubeless I flatted every ride, no more.

  • Ryamond Payne

    60-80 in/lbs or just as tight as you can get it with a nut driver. at work we never torque em cause they hold up just fine by hand tightening it, but if you had to put a torque spec on it thats about what it'd be.

  • fordguy1800

    and enjoyed it.