Pressure Vacuum Relief Valves

Enardo Pressure Vacuum Relief Valves are installed on storage tanks containing vapor producing products. They protect tanks from damage caused by over-pressure during the filling and emptying process or from thermal expansion and contraction.

Series 850 Pipe-Away Pressure Vacuum Relief Valves

The 850 series relief valve is designed to provide pressure and vacuum relief in applications that require hazardous vapors to be piped away, rather than released into the atmosphere. Available in sizes 2" through 10". Standard pressure and vacuum settings are 1/2 ounce or 1 inch of the water column. Seats and pallets are non-corrosive advanced composite materials or stainless steel.
Construction: Cast aluminum body, ductile iron, S.S. & FRP
Connection: ANSI 150 lb. F.F. or R.F. Flanged

Series 950 Vent to Atmosphere Pressure Vacuum Relief Valves

The 950 series relief valve provides pressure and vacuum relief for normal venting requirements, while maintaining a safe internal working pressure to prevent the routine expulsion of waste gas to the atmosphere. Available in sizes 2" through 10". Standard pressure and vacuum settings are 1/2 ounce or 1 inch of the water column. Seats and pallets are non-corrosive advanced composite materials or stainless steel.
Construction: Cast aluminum body, ductile iron, S.S. & FRP
Connection: ANSI 150 lb. F.F. or R.F. Flanged

Series 800 Inline Pressure Vacuum Vents

The 800 series valves are avaiable in 2", 3", and 4" pipe sizes with thermoplastic working parts to protect against corrosive atmospheres. The standard pressure setting is 1 oz. with 4/10 oz. vacuum relief. Additional pressure settings are offered in 1/2 oz. increments up to 16 oz. Pressure relief only valves are offered as a PO model.
Construction: Cast aluminum body
Connection: Slip-on flanges to accept pipe end

Series 900 End Of Line Inline Pressure Vacuum Vents

The 900 series valves are avaiable in 2", 3", and 4" pipe sizes with thermoplastic working parts to protect against corrosive atmospheres. The standard pressure setting is 1 oz. with 4/10 oz. vacuum relief. Additional pressure settings are oferred in 1/2 oz. increments up to 16 oz.
Construction: Cast aluminum body
Connection: Slip-on flanges to accept pipe end

Pressure Vacuum Relief Valve With Flame Arrestor

The 950 series relief valve with Series 7 flame arrestor allows a storage tank with flammable liquids or solvents to breathe, thus maintaining a safe internal working pressure while protecting against fire and explosion from outside sources of ignition. Available in sizes 2" to 10". Standard pressure and vacuum settings are 1/2 ounce or 1 inch of water column. Seats and pallets are non-corrosive advanced composite materials or stainless steel. For closed in vapor collection systems, use an 850 series relief valve with an Enardo detonation flame arrestor.
Model 951 Pressure Relief Valve - Vent to Atmosphere

Enardo 951 (top mount) Pressure Vacuum Relief Valve is an advanced design for vent to atmosphere applications. Utilizing the latest technologies, this relief valve provides protection against positive over-pressure, prevents air intake, evaporative loss of product and helps contain odorous and potentially hazardous vapors. Unmatched features include Enardo Saber Guide valve system and advanced composite PPS seat and trim for superior valve performance.

Model 952 Vacuum Relief Valve - End of Line

Enardo 952 (Top Mount) Vacuum Relief Valve is an advanced design for vent from atmosphere applications. Utilizing the latest technologies, this relief valve provides protection against vacuum over-pressure, prevents air intake, evaporative loss of product and helps contain odorous and potentially hazardous vapors. Unmatched features include Enardo Saber Guide valve system and advanced composite PPS seat and trim for superior valve performance.

Enardo International, Ltd., 4470 S. 70th E. Avenue, Tulsa, OK 74145-4607. Tel: 918-627-6161; Fax: 918-622-0004.