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The OPD valve
 
 

Testing The OPD Valve

This is the Lab I used to preform experiment on the OPD Valve. (Overfill Protection Device)

This "Lab" is short for "Labador" as the conditions were simular.











Exhibit 4 Large ACME QCC-1 AKA CGA 791 type 1 Low Flow fitting 70,000 BTU/Hr. High Flow Fitting 200,00 0 BTU/H



 

For more information on this Type of Tank Fitting see this Web Page;
 http://www.sh-leggitt.com/edlees/type1conn.pdf TYPE1-GR TYPE 1 ACME Cylinder Connector 1 5/16" ACME x 1/4" MPT OUTLET This TYPE 1 ACME appliance fitting is a wrenchless, user friendly, right hand connector. Features a thermally sensitive sleeve and excess flow device. Max output is 200,000 BTU/hr. Use to connect LP-Cylinders to regulators, hoses and other fittings. Not for use on gas grills and other low flow devices. U.L. Listed.

 





CGA 555 Fittings Orfficed 70,000 BTU Acme Brass Nut Tank Fitting



This style fitting has a fixed orifice of .040" (forty thousands of an inch).
This orifice will limit the vapor discharged from the cylinder to 70,000BTU/H flow rate.
This is a common fitting found on a turkey cooker and this fitting should be attached to a regulator.




P.O.L. O-Rings

Larger AS-110 Nitril buna-N
(3/8 X 9/16 X 3/32)
Smaller As-012 Nitril Buna-N
(3/8 X 1/2 X 1/16)

I carry several of each size in a small envelop in the truck. I use a few, But I always have a spare for someone else.





CGA 555 W/Excess flow
www.flameengineering.com/Cylinder_Connectors.html


This soft-nose P.O.L. connector incorporates an excess flow safety device and hex nut for positive tightening. Has a flow rate of 1.8 gallons per minute.Use to connect LP-Cylinders to regulators, hoses and other fittings. Not for use with gas grills and other low pressure devices. U.L. Listed.



CGA 555 P.O.L. high flow.
This fitting has a large passage and is unrestricted.


P-1685 Standard P.O.L. Fitting 1/4" MPT OUTLET This standard P.O.L. connector threads into nearly all propane/butane cylinders to connect to regulators, hoses and other fittings. This is a straight through flow design - No excess flow safety device installed in this P.O.L. Not for use with gas grills and other low pressure devices. U.L. Listed.




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