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Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet
Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet

Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet

SKU : 28-021

Regular price £61.11


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Flow sensitive unloader valve for pressure washers. 100 Bar max, 11–16 LPM, brass & stainless construction. 3/8" inlet, 1/2" outlet, dual bypass ports.


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Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet

Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet

£61.11

Ask about Interpump K3.1 Flow Sensitive Unloader Valve – 100 Bar, 11–16 LPM, 3/8" Inlet, 1/2" Outlet

Product Details

The Interpump K3.1 is a flow sensitive unloader valve engineered to regulate system pressure and protect pressure washer pumps in lower flow setups. Designed for smaller jetting systems and mobile washers, it automatically diverts water to bypass when the spray trigger is released.

This unit supports up to 100 Bar pressure and a flow rate between 11–16 L/min, making it ideal for compact pressure cleaning units. The robust brass body with stainless steel internal components ensures durability, even under frequent cycling.

Featuring a 3/8" BSP female inlet, 1/2" BSP male outlet, and a dual bypass port (3/4" BSP male + 1/2" BSP female), the K3.1 is compatible with a wide range of plumbing setups. It also includes two 1/4" BSPF gauge ports for monitoring system performance. For optimal function, a minimum working pressure of 40 Bar is recommended.

Specifications

  • Key Specifications

  • Part No K3.1
  • Type Flow Sensitive Unloader Valve
  • Max Pressure 100 Bar
  • Recommended Min Pressure 40 Bar
  • Flow Range 11–16 L/min
  • Max Water Temperature 60°C
  • Inlet 3/8" BSP Female
  • Outlet 1/2" BSP Male
  • Bypass Port 3/4" BSP Male + 1/2" BSP Female
  • Gauge Ports 2x 1/4" BSP Female
  • Construction Brass body, stainless steel internals

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Delivery & Returns

DELIVERY
  • Free UK Delivery on all orders over £150.
  • From £2.99 UK Delivery on orders under £150.
RETURNS

If you do not like the product you can return it within 15 days. We have an easy and hassle free return policy. Please look at our Delivery & Returns section for further information.


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