Description
YUB21405 – Trapped Pressure Unloader Valve 21 GPM @ 4050 PSI Blue Spring
YUB21405 Trapped Pressure Unloader Valve 21 GPM @ 4050 PSI Blue Spring by General Pump. Replaces YUB2140 / VB80/150-280. Blue spring unloader valve. Rated up to 4050 PSI and 21 GPM. Specifications: Maximum Volume: 21 GPM, Rated Pressure: 4050 PSI, Maximum Pressure: 4500 PSI, Maximum Temperature: 195 Deg. F. (140 Deg. F. continuous), Inlet: (2) 1/2 NPT-F, Outlet: 1/2 NPT-F, Bypass: (1) 1/2 NPT-F, Overall Dimension: 7.57 x 3.96 x 1.5 , Weight: 3.1 Lbs.
Features:
NEW improved design!
Reduced pressure loss
Makes for easier gun operation
Extremely reliable
Easy maintenance
Specifications:
Maximum Volume: 21 GPM
Rated Pressure: 4050 PSI
Maximum Pressure: 4500 PSI
Maximum Temperature: 195 Deg. F. (140 Deg. F. continuous)
Inlet: (2) 1/2 NPT-F
Outlet: 1/2 NPT-F
Bypass: (1) 1/2 NPT-F
Overall Dimension: 7.57 x 3.96 x 1.5
Weight: 3.1 Lbs.
Note: The valve has been designed for continuous use at a water temperature of 140 Deg. F. It can operate for short periods at a maximum temperature of 195 Deg. F.
SKU: YUB21405
PRESSURE ACTUATED 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:
Maximum flow: 26 GPM
Maximum pressure: 4640 PSI
Inlet: 1/2″ FPT
Discharge 1/2″ FPT
DUAL bypass port 1/2″ FPT
BUNA-N SEALS
FEATURES
Compact: low profile saves space
Dual auxillary ports: Allows for easy installation of pressure operated accessories
Reliability: No discharge check valve means higher reliability and less maintenance
High operating temperature: to 165 F
SPECIFICATIONS:
3600 PSI maximum
2.4 to 10.8 GPM flow range
3/8″ FPT inlet
1/2″ FPT discharge and bypass
FEATURES:
Suitable for use with multiple guns at the same time
Dynamic seals made up of o-rings and teflon runner
Optimized internal passages that guarantee reduced pressure loss
No risk of fittings being ejected in case of overpressure because o-rings are positioned upstream to the threads
1/4″ FPT fitting for pressure gauge
SPECIFICATIONS:
Maximum volume: 21 GPM
Minimum adjustable pressure: 400 PSI
Maximum Adjustable pressure: 4500 PSI
Pressure drop to reset bypass: 32% (This is the pressure reduction necessary in comparison to the set up in order that the valve brings back pressure in the circuit, % figures of the pressure set up)
Maximum temperature: 195F. (Unloader is designed to operate at a CONTINUOUS water temperature of 140F. It can be operated for short periods at a maximum temperature of 195F.)
Port sizes: 1/2″ FPT inlet, discharge and bypass
Weight: 2.5 lbs
FEATURES:
NEW improved design, trapped pressure unloader
Reduced pressure loss
Extremely reliable
Easy maintenance
SPECIFICATIONS:
Maximum volume: 21 GPM
Maximum pressure: 4500 PSI
Maximum temperature: 195F. The valve is designed for continuous use at a water temperature of 140F. It can operate for short periods at a maximum temperature of 195F.
Inlet: Dual 1/2″ FPT
Discharge: 1/2″ FPT
Bypass: 1/2″ FPT
FEATURES:
Sturdy brass and steel construction
Multiple connections for easy installation
Powerful spring action provides reliable pressure adjustment
Hexagonal shaped check valve avoids jamming
O-rings before threads so threads do not see pressure
New fitting shape, ball always in axis with the seat
Larger porting throughout unloader to allow higher flow
Knob is fitted with a locknut for minimum and maximum pressure regulation
SPECIFICATIONS:
Maximum flow: 10.5 GPM
Maximum discharge pressure: 4000 PSI
Maximum temperature: 194F.
Port sizes: 3/8″ PFT inlet, discharge and bypass
Weight: 1.6 lbs.
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