Features
Stainless Steel Construction
Stainless Steel springs
Molded Flat Seals
Standard Spring Settings
Nitrile (NBR) Seat
Serial Numbers for Identification
 
 
 
 
Type H284 internal spring relief valves can be used in the H500 Combo JoeTM relief valve manifold or as separate units on stationary tanks. The valve body material – Type H284 of brass (LP-Gas service). All other components are stainless steel, including a 300 Series Stainless steel spring for additional resistance to product contaminants. A thickly molded main seal improves service life and resistance to severe applications. Flow area is 3.20 sq. in. Standard product temperature rating is -20 to 160°F / -29 to 71°C.
When used in ASME tanks, internal spring relief valves have only the poppet and part of the body outside the tank. The adjusting screw and all other parts are inside the tank, safe from tampering. Field-Repairable valve seats allow for seat replacement without affecting relief setpoint. Standard setpoints listed with UL® for the Type H284 includes 225 and 250 psig / 15.5 and 17.2 bar. All set points between 100 and 400 psig / 6.9 and 27.6 bar are available with ASME approvals.
Outlet is 3 in. NPT for discharge stack connection. Type P104-24 pipe away adaptor (3 in. FNPT) is available for use with either valve. A 3-1/2 in. wrench can be used when installing or removing the valve. The drain deflector is furnished as standard on the Type H284. The Type P299 Rain Cap ships standard with each valve.