Pressure Unloader

Features:
• Positioning of all o-ring seals before the threads, for greater mechanical strength
• Shutter axially guided for greater stability at high flow rates
• Stainless steel seat and shutter designed by fluid dynamics study to eliminate instabilities and turbulences with great benefit in terms of long life
• Stem with internal anti-rotation system, for greater life
• Stem o-ring seal is placed on the connecting stem guide to allow the stroke of the stainless steel stem on o-ring, increasing the life
• Hexagonal check valve for a better smoothness

Specifications:
• Spring Color: Yellow
• Rated Pressure: 2,465 PSI
• Permissible Pressure: 2,760 PSI
• Rated Temperature: 194° F
• Rated Flow Rate: 26.4 GPM
• Material: Chemically nickel plated brass body & fittings
• Inlet Port: 1/2" F
• Outlet Port: 1/2” F
• Bypass Port: 1/2” F
• Weight: 38.8 Oz

Features:
• Easy construction
• Especially soft switching behavior
• Easily operated adjustment and shifting
• Adjustable minimum and maximum pressure
• Extremely long durability
• Adjustable from 850 to 5,070 PSI
• 1/2” Bypass connection

Specifications:
• Maximum Pressure: 5,070 PSI
• Minimum Pressure: 850 PSI
• Flow Rate: 8 GPM
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/2” FNPT
• Weight: 2.60 lbs

Mecline VHP51 Unloader Valve 8,000 PSI. With working pressures up to 7,250 PSI and flows up to 26.4 GPM, the VHP51 can continuously handle water up to 160° F (up to 194° F for short periods)

Featuring:
• Positioning of all o-rings before the threads, giving greater mechanical strength
• Ease of maintenance: the whole regulating unit can be totally removed from on top
• The locking ring nut has a set screw for a safer pressure setting
• A nickel-plated brass body, granting greater resistance to corrosion and overall wear
• All internal parts in stainless steel, including the outlet fitting and piston cylinder
• Internal safety lock to avoid overpressure
• Suitable for wall mount

Specifications:
• Rated Pressure: 7,250 PSI
• Permissible Pressure: 8,000 PSI
• Rated Temperature: 194° F
• Rated Flow Rate: 26.4 GPM
• Material: Chemically nickel-plated brass body. Internal parts in Stainless steel including fittings
• Inlet Port: 1/2" F
• Outlet Port: 1/2” F
• Bypass Port: 1/2”
• Replaces VHP50-500
• Weight: 40.57 Oz

General Pump ZH1520 Trapped Pressure Unloader Valve 2,465 PSI 52.8 GPM 1” NPT-F

Features
• Suitable for Industrial use
• Provisions for Panel Mounting
• Suitable for Industrial use
• Single bypass port
• Extremely reliable
• Easy maintenance

Specifications Sheet

Specifications
• Max Volume: 52.8 GPM
• Min Volume: 5.28 GPM
• Maximum Operating Pressure: 2,465 PSI
• Maximum Temperature: 185° F
• Inlet Port: 1" NPT-F
• Outlet Port: 1" NPT-F
• Bypass Port: 1" NPT-F
• Dimensions: 8.27” x 5.07” x 1.81”
• VRP175, VRP 175
• Weight: 4.4 Lbs

PA VB 200/150 Pressure Regulating Unloader Valve 53 GPM 2,450 PSI. At gun shut off, the water flow is bypassed at reduced pressure

Features:
• Sturdy steel and brass construction
• Hexagonal shaped check valve to avoid jamming
• Max pressure adjustment by screw and locknut

Specifications:
• Rated Pressure: 2,200 PSI
• Permissible Pressure: 2,450 PSI
• Rated Flow Rate: 53 GPM
• Rated Temperature: 195° F
• Inlet Port: 1” FPT
• Outlet Port: 1” FPT
• Bypass Port: 1” FPT
• Weight: 72.16 oz

PA VB 200/280 Pressure Regulating Unloader Valve 53 GPM 4,500 PSI. Pressure regulating unloader valve. At gun closure the water flow is discharged in bypass, lowering the pressure in the circuit upstream of the valve

Features:
• High flow rate
• Brass body and Sst internal parts
• Adjustable with screw and counter nut to secure the working pressure
• Slots for screw fastening

Specifications:
• Rated Pressure: 4,050 PSI
• Permissible Pressure: 4,500 PSI
• Minimum Adjustable Pressure: 410 PSI
• Max Flow Rate: 53 GPM
• Rated Temperature: 195° F
• Inlet Port: 1” BSP F
• Outlet Port: 1” BSP F
• Bypass Port: 1” BSP F
• Weight: 122.81 oz

Featuring:
• Sturdy steel and brass construction
• By-pass control actuates at very low pressure values with reduced pressure in the delivery line when gun is shut
• By-pass control actuates at very low pressure values with reduced pressure in the delivery line when gun is shut
• Specially designed check valve prevents jamming and vibrations even in presence of sand and scales
• Safety valve built in the delivery side

Specifications:
• Unloader Valve (discharging)
• Rated Pressure: 7,250 PSI
• Permissible Pressure: 8,100 PSI
• Rated Temperature: 195° F
• Residual pressure at close down: 2,750 PSI
• Min. bypass re-start pressure: 1,600 PSI
• Rated Flow Rate: 21.0 GPM
• Material: Steel and brass
• Inlet Port: 1/2" F
• Discharge Port: 1/2” F
• Bypass Port: 1/2” F
• AR Part # AR40397
• Weight: 121.7 Oz