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NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service Kits
K Series Flow Sensitive Unloader ValvesK Series Flow Sensitive Unloader Valves
Interpump K5 Unloader Valve 25-41 Lpm flow
Interpump K5.3 Pressure Washer Unloader Valve - 200 Bar, Flow-Sensitive
InterpumpFlow Sensitive Unloader Valve

Interpump K5 Unloader Valve 25-41 Lpm flow

SKU K5.3
Max pressure
200 bar
Max flow
25 - 41 LPM
Inlet
⅜" BSP Female
Outlet
½" BSP Male · Thread chart
£101.32 ex VAT
£121.58 inc. VAT
In stockOrder by 2pm for next-day delivery.
Need help choosing? Call 015395 66193 (Mon–Fri 9am–5pm) or email sales@flowjet.co.uk.

Overview

Interpump K5 flow sensitive unloader valve in brass and stainless steel, rated to 200 bar and 25 to 41 litres per minute, with water up to 60°C. It regulates and limits system pressure by diverting excess water to the bypass, and releases the flow fully when the outlet is closed. Pressure is adjusted by hand.

It has a 3/8" BSP female inlet, 1/2" BSP male outlet, 3/4" BSP male and 1/2" BSP female bypass ports and 1/4" BSP female gauge ports.

Specification

Part numberK5.3
BrandInterpump
SeriesK5
TypeFlow sensitive
Maximum pressure200 bar
Flow range25 to 41 litres per minute
Maximum temperature60°C
Inlet3/8" BSP female
Outlet1/2" BSP male
Bypass3/4" BSP male and 1/2" BSP female
Gauge ports1/4" BSP female
ConstructionBrass and stainless steel
Recommended minimum pressure40 bar

Sizing help

To check thread sizes, see our BSP thread size chart.

For technical advice or help choosing a part, call 015395 66193 or email sales@flowjet.co.uk.

Interpump K5 flow sensitive unloader valve, 200 bar, 25 to 41 litres per minute, 3/8" BSP female inlet.

Specifications

Brand
Interpump
Max Pressure Rating
200 bar
Max Flow Rating
25 - 41 LPM
Inlet
⅜" BSP Female
Outlet
½" BSP Male
Unloader Valve Series
Interpump K series (Flow Sensitive)
Material
Brass
Weight
1.075 kg

Technical information

200 Bar max pressure*

25-41 Lpm flow

60°C max water temperature

Flow sensitive valve

Brass & st.steel construction

3/8"BSPF inlet

1/2"BSPM outlet

3/4"M + 1/2"F BSP bypass

1/4"BSPF guage ports

*40 Bar recommended minimum working pressure

Compare similar products

Detail
This product
Interpump K3 Unloader Valve 8-11 LPM
Interpump K3 Unloader Valve 16-21 LPM
Interpump K5.1 Unloader Valve 11-16 Lpm flow
Price£101.32 ex VAT
£121.58 inc VAT
£89.78 ex VAT
£107.74 inc VAT
£89.78 ex VAT
£107.74 inc VAT
£101.32 ex VAT
£121.58 inc VAT
Max pressure200 bar100 bar100 bar200 bar
Max flow25 - 41 LPM8 - 11 LPM16 - 21 LPM11 - 16 LPM
Inlet⅜" BSP Female⅜" BSP Female⅜" BSP Female⅜" BSP Female
Outlet½" BSP Male½" BSP Male½" BSP Male½" BSP Male
AvailabilityIn stockIn stockIn stockIn stock

Documents

interpump_k5_parts_list_4interpump_k5_parts_list_4
Data Sheet pdf_link_1

Interpump K5 Parts List.pdf

Data Sheet pdf_link_2

Interpump K5 User Manual.pdf

Delivery & returns

  • Free delivery on online orders over £200 + VAT to a UK mainland address.
  • Orders processed by 2pm go out on tracked, insured next-working-day delivery.
  • Orders under £200 + VAT: delivery £11.99 + VAT.
  • Returns: ask us for a returns number first. Unused goods in their original packaging can come back at our discretion, less a restocking fee; faulty or wrong items have no fee.
Full delivery & returns details

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