This low capacity relief valve has been designed for use in small pressure vessels. The ASME certified slope of .422 yields, for example, a capacity of 9.34 lbs per minute of air @ 250# set pressure. The 800 series relief valve is available in set pressure from 75 to 400 p.s.i. All relief valve common set pressures are in stock. Special settings can be made up at no extra charge and usually take 1-2 days. All Shank Relief Valves are manufactured in accordance with ASME Quality Control Procedures and stamped with UV and NB symbols. They are certified by the National Board of Boiler & Pressure Vessel Inspectors. They are also certified in Canada.
All upper and lower seats are constructed from 304 stainless steel to prevent corrosion and embedded with a Teflon ring.
All springs are stainless steel.
All relief valves come with installation tag and cable tie.
Each valves identification tag has the required information of catalog number, month and year of manufacture with lot number, set pressure, inlet pipe size and capacity for AIR in units of SCFM.
Each valve undergoes 3 separate test sequences to verify quality and set pressure, then is sealed for security.
All ½ MNPT inlet x Ύ FNPT outlet
800 - Black Oxidized A36 Steel
800D 60-14-40 Ductile Iron Casting
800SS 304 Stainless Steel
800 Saftey relief valves are all can
mounted on the following manifolds:
#843 ½ x ½ x ½ FNPT (Hand Wheel)
#843F ½ x ½ x ½ FNPT (Seal Cap)
#846M ½ x ½ x ½ FNPT (Seal Cap)
#848M Ύ x ½ x ½ FNPT (Seal Cap)