Hello Paul
"Does anyone recollect who that was, and even better, what type of valve
was used."
Try:
http://www.mcmaster.com/
search 1 way valve
read about check valves
Order a few different types and let us know which one you like.
Take a look below at:
Nylon Body with Viton Diaphragm
PVDF Body with Viton Diaphragm
Crack pressure is under 1 PSI, I don't have a feeling just how low a crack
pressure you want. A 1 liter soda bottle with a hole in it to stick in
place a tygon tube connected to your 1 way, and suck on threaded end
should give you a very good feel for what you want.
Once you select a good crack pressure put it in a bottle for a while with
Mogas, and another with 100LL, then check function again. After fuel test
let bake in sun for a while on the dash of your car for a week and try
again.
We know Viton is probably good. Nylon you see being used in fuel systems,
but you need to be careful as there are different types of nylon. PVDF I
am not familiar with, but think it is well worth a $11.05 test.
Ron Parigoris
This is on page 441 (has picture):
Diaphragm Check Valves
Maximum Pressure: 15 psi
Cracking Pressure: Less than 1 psi
These valves have a three-piece design for air applications. They
have a free-floating diaphragm coated with silicone lubricant to assist in
sealing, can be cycled as fast as once per second, and operate in any
position. Use with soft thermoplastic tubing. Note: Cv factor not rated.
Connections: 1/8" sizes have straight ends without barbs; all others have
barbed ends.
Polypropylene Body with Viton or Fluorosilicone Diaphragm For
corrosive external environments. Temperature range is -40 to +180 F.
Color is translucent white.
Nylon Body with Viton or Fluorosilicone Diaphragm For higher
external-temperature applications. Temperature range is -70 to +250 F.
Color is translucent white and black, except 47245K17 which is
translucent white and gray.
PVDF Body with Viton Diaphragm For external applications requiring
superior chemical and abrasion resistance. Temp. range is -70 to +250
F. Color is translucent white, except 47245K35 which is blue.
Tube ID End-to-End Lg. Each
Polypropylene Body with Viton Diaphragm
1/8" 1 39/64" 47245K11 $6.32
3/16" 1 11/16" 47245K12 6.32
1/4" 1 17/32" 47245K13 6.32
5/16" 1 3/4" 47245K14 8.16
Polypropylene Body with Fluorosilicone Diaphragm
1/8" 1 39/64" 47245K15 5.79
3/16" 1 11/16" 47245K16 4.80
Nylon Body with Viton Diaphragm
3/16" 1 11/16" 47245K17 5.86
1/4" 1 17/32" 47245K18 5.86
Nylon Body with Fluorosilicone Diaphragm
1/8" 1 39/64" 47245K25 4.80
3/16" 1 11/16" 47245K26 4.80
1/4" 1 17/32" 47245K27 4.80
5/16" 1 3/4" 47245K24 6.45
PVDF Body with Viton Diaphragm
1/8" 1 39/64" 47245K35 12.63
3/16" 1 11/16" 47245K36 11.05
1/4" 1 35/64" 47245K37 11.05
5/16" 1 3/4" 47245K34 20.79
Double-Union Ball Check Valves
|