Proportional Relief Valves
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High Pressure Proportional Relief Valves
▪ Set pressure from 50 to 6000 psig (3.4 to 414 bar)
▪ Maximum outlet pressure 1500 psig (103 bar)
▪ Working temperature -40°C to 148°C (-40°F to 300°F)
▪ End connections: 1/8″ to 1″, 6 mm to 12 mm
▪ End types: tube fitting, male/female NPT, BSPT, BSPP, metric thread
▪ Orifice size 0.14″ (3.6 mm)
▪ Liquid or gas service
▪ 7 color-coded springs available for a wide range of set pressures
▪ Adjustable bonnet cap and adjustable set pressure
▪ Variety of valve body and seal materials, Manual override handles available
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Low Pressure Proportional Relief Valves
▪ Set pressure from 10 to 225 psig (0.68 to 15.5 bar)
▪ Maximum outlet pressure 225 psig (15.5 bar)
▪ Working temperature -40°C to 148°C (-40°F to 300°F)
▪ End connections: 1/8″ to 1″, 6 mm to 12 mm
▪ End types: tube fitting, male/female NPT, BSPT, BSPP, metric thread
▪ Orifice size 0.19″ (4.8 mm), 0.25″ (6.4 mm)
▪ Liquid or gas service, One spring for the full set pressure range
▪ Lead seal lock wire through lock wire holes to lock proportional relief valve so as to secure a set pressure effectively
▪ Adjustable bonnet cap and adjustable set pressure
▪ Variety of valve body and seal materials
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Medium Pressure Proportional Relief Valves
▪ Set pressure from 50 to 1500 psig (3.4 to 103 bar)
▪ Maximum outlet pressure 1500 psig (103 bar)
▪ Working temperature -40°C to 148°C (-40°F to 300°F)
▪ End connections: 1/8″ to 1″, 6 mm to 12 mm
▪ End types: tube fitting, male/female NPT, BSPT, BSPP, metric thread
▪ Orifice size 0.25″ (6.4 mm)
▪ Liquid or gas service
▪ 3 color-coded springs available for a wide range of set pressures
▪ Balanced stem design to eliminate the effect of system back pressure
▪ Variety of valve body and seal materials, Label identifies the set pressure range
