Unloader with Switch

New Design Features:
• Interior Design – more efficient flow and operation
• Dual Locking Nuts – vibration resistant for setting maximum pressures
• New Spring Material – more resistant to fatigue, powder paint resists rusting
• Piston – large diameter, more strength and contact area for shifting alignment
• Discharge Nipple – sealing o-ring has been moved to the lower part of the thread, increases hydro strength and fitting strength
• Shutter Valve – hex design, less contact area for smooth shifting (prevents binding). larger size, longer life and more positive shifting

Featuring:
• Integral switch detects full bypass mode
• Use for burner control or time delay switch
• Over sized handle – easier adjustment
• Forged valve body – excellent strength
• Two by-pass ports
• Ultra thick inlet and discharge ports - added strength
• Color coded springs and caps – easy valve identification
• All ports are FNPT

Specifications:
• Spring Color: Black
• Replaces AL687 & MV550MS
• Maximum Pressure: 4,500 PSI
• Max. Volume: 8.0 GPM
• Micro Switch 6 AMP, 250 V
• Adjustable pressure
• Brass valve body
• Max. Fluid Temp.: 194° F.
• Inlet Port (1): 3/8" FNPT
• Discharge Ports (1): 3/8” FNPT
• Bypass Ports (2): 3/8” FNPT
• Weight: 33.3 oz

New Design Features:
• Interior Design – more efficient flow and operation
• Dual Locking Nuts – vibration resistant for setting maximum pressures
• New Spring Material – more resistant to fatigue, powder paint resists rusting
• Piston – large diameter, more strength and contact area for shifting alignment
• Discharge Nipple – sealing o-ring has been moved to the lower part of the thread, increases hydro strength and fitting strength
• Shutter Valve – hex design, less contact area for smooth shifting (prevents binding). larger size, longer life and more positive shifting

Featuring:
• Integral switch detects full bypass mode
• Use for burner control or time delay switch
• Over sized handle – easier adjustment
• Forged valve body – excellent strength
• Two by-pass ports
• Ultra thick inlet and discharge ports - added strength
• Color coded springs and caps – easy valve identification
• All ports are FNPT

Specifications:
• Spring Color: Blue
• Replaces AL686
• Maximum Pressure: 3,650 PSI
• Max. Volume: 8.0 GPM
• Micro Switch 6 AMP, 250 V
• Adjustable pressure
• Brass valve body
• Max. Fluid Temp.: 194° F.
• Inlet Port (1): 3/8" FNPT
• Discharge Ports (1): 3/8” FNPT
• Bypass Ports (2): 3/8” FNPT
• Weight: 33.3 oz

Features:
• Adjustable valve allows limit setting on both maximum pressure and minimum pressure
• Straight flow-through design minimizes pressure loss through valve
• Working components constructed of high-grade stainless steel. PTFE and Viton seals for maximum heat and chemical resistance
• Internal bypass valve can be easily accessed and repaired without removing unloader from unit

Specifications:
• Maximum Pressure: 3,625 PSI
• Minimum Pressure: 500 PSI
• Flow Rate: 8 GPM
• Normally closed bypass
• Amps: 125 VAC 5A, 240 VAC 3A
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/4” FNPT
• Weight: 1.86 lbs

Features:
• Built-in exclusive down stream (venturi-type) injector with built in orifice provides more precise siphon rate
• Adjustable valve allows limit setting on both maximum pressure and minimum pressure
• Straight flow-through design minimizes pressure loss through valve
• Working components constructed of high-grade stainless steel. PTFE and Viton seals for maximum heat and chemical resistance
• Internal bypass valve can be easily accessed and repaired without removing unloader from unit

Specifications:
• Maximum Pressure: 3,625 PSI
• Minimum Pressure: 500 PSI
• Flow Rate: 8 GPM
• Orifice: 1.8 mm
• Injector Flow Rate: 1.5 - 2.25 GPM
• Normally closed bypass
• Amps: 125 VAC 5A, 240 VAC 3A
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/4” FNPT
• Weight: 1.86 lbs

Features:
• Built-in exclusive down stream (venturi-type) injector with built in orifice provides more precise siphon rate
• Adjustable valve allows limit setting on both maximum pressure and minimum pressure
• Straight flow-through design minimizes pressure loss through valve
• Working components constructed of high-grade stainless steel. PTFE and Viton seals for maximum heat and chemical resistance
• Internal bypass valve can be easily accessed and repaired without removing unloader from unit

Specifications:
• Maximum Pressure: 3,625 PSI
• Minimum Pressure: 500 PSI
• Flow Rate: 8 GPM
• Orifice: 2.1 mm
• Injector Flow Rate: 2.25 - 3.25 GPM
• Normally closed bypass
• Amps: 125 VAC 5A, 240 VAC 3A
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/4” FNPT
• Weight: 1.86 lbs

Features:
• Built-in exclusive down stream (venturi-type) injector with built in orifice provides more precise siphon rate
• Adjustable valve allows limit setting on both maximum pressure and minimum pressure
• Straight flow-through design minimizes pressure loss through valve
• Working components constructed of high-grade stainless steel. PTFE and Viton seals for maximum heat and chemical resistance
• Internal bypass valve can be easily accessed and repaired without removing unloader from unit

Specifications:
• Maximum Pressure: 3,625 PSI
• Minimum Pressure: 500 PSI
• Flow Rate: 8 GPM
• Orifice: 2.4 mm
• Injector Flow Rate: 3.35 – 5.0 GPM
• Normally closed bypass
• Amps: 125 VAC 5A, 240 VAC 3A
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/4” FNPT
• Weight: 1.86 lbs

General YVB9KMS2 Trapped Pressure Unloader w/ Microswitch 3,650 PSI 8.0 GPM

Features:
• Extremely durable construction in stainless steel and brass
• Easy start-up due to low re-arm pressure (27% of operating pressure)
• Hexagonal discharge check valve to prevent binding
• Unloader with microswitch
• Waterproof, 5-amp pressure switch, UL Listed

Specifications:
• Rated Pressure: 3,200 PSI
• Maximum Pressure: 3,650 PSI
• Rated Temperature: 195° F
• Maximum Flow: 8.0 GPM
• Pressure Switch: 1 amp ind., 5 amps res, 250 Volts
• Inlet Port: 3/8” BSP-F
• Outlet Port: 3/8” BSP-F
• Bypass Port: 3/8” BSP-F
• Gauge Port: 1/4” F
• Weight: 1.6 lbs

Features:
• Integral microswitch detects full bypass mode
• Microswitch contained in an electrical box IP55, with three core cable for connection with the electrical system of the pressure cleaner
• 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
• Micro Switch: 6 A, 250 V, 47.24” Cable length
• Material: Brass body & fittings
• Inlet Port: 1/2" F
• Outlet Port: 1/2” F
• Bypass Port: 1/2” F
• Weight: 47.80 Oz

Features:
• Integral microswitch detects full bypass mode
• Microswitch contained in an electrical box IP55, with three core cable for connection with the electrical system of the pressure cleaner
• 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: Blue
• Rated Pressure: 4,640 PSI
• Permissible Pressure: 5,075 PSI
• Rated Temperature: 194° F
• Rated Flow Rate: 26.4 GPM
• Micro Switch: 6 A, 250 V, 47.24” Cable length
• Material: Brass body & fittings
• Inlet Port: 1/2" F
• Outlet Port: 1/2” F
• Bypass Port: 1/2” F
• Weight: 48.33 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
• Amps: 125 VAC 5A, 240 VAC 3A
• Max Temperature: 176° F
• Inlet Port: 3/8" FNPT
• Outlet Port: 3/8” FNPT
• Bypass Port: 1/2” FNPT
• Weight: 2.60 lbs