General Pump K5.3 Unloader Valve, 3000 PSI 10.83 GPM, 3/8″ MPT Out

SKU 8.712-615.0 Category
  • Max PSI: 3000
  • GPM: 6.6-10.83
  • Max Temp: 165°F
  • 3/8″ FPT Inlet
  • 3/8″ MPT Outlet
  • 3/4″ MPT or 1/2″ FPT Bypass
General Pump
Genuine General Pump OEM Parts


Part Number: 8.712-615.0
Cross Reference Part Number(s): 462553A, 87126150
Manufacturer’s Part Numbers (MPNs): ZK53, 10ZK53LL

This 8.712-615.0 General Pump K5.3 flow regulated unloader valve relieves line pressure when pressure washer is in bypass mode. Designed with no external moving parts or springs, and all stainless steel and brass components, with dual gauge ports and convenient bypass location. This K5.3 unloader has a 3/8 inch Male Outlet




1/2" FPT, 3/4" MPT

Connector / Inlet

3/8" FPT


3/8" MPT



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Memorial Day Observance

In honor of the Memorial Day weekend, Northstar Clean Concepts will be operating at limited capacity on Friday, May 24th, 2024, and will be closed on Monday, May 27th.

As a result, orders placed after 12:00pm (PDT) on May 24th may not be processed until Tuesday, May 28th. 

If you have any questions, please feel free to call us during our regular business hours, 7:30a-4:00p (PDT), at (509) 547-2323 and we will be happy to help!

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