Menu
Skip to main content
phone.svg 015395 66193email.svg sales@flowjet.co.uk
FacebookTwitterBlogYoutube
All Products
Brands
Machine Repair
Size Charts
Offers
Contact Us
Type to search
Type to search

Shop popular:

NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service Kits

Free UK mainland delivery on orders over £200 excluding VAT

Speak to an Expert: 015395 66193

Finance Available

Rated 4.8 on Google

K Series Flow Sensitive Unloader ValvesK Series Flow Sensitive Unloader Valves
Interpump K3 Unloader Valve 8-11 LPM
k3 unloader valve

Interpump K3 Unloader Valve 8-11 LPM

SKU: K3.0
exc. vat
inc. vat
Price
£89.78
£107.74
In Stock
Order by 2 PM for next day delivery
  • Get finance on orders over £1000 Learn More
  • Free UK mainland delivery on orders over £200 excluding VAT
  • Bulk discounts available
  • Stock moves quickly. For large or urgent orders, call 015395 66193 to confirm availability.
  • Need assistance? Call 015395 66193

Overview

Interpump K3 flow sensitive unloader valve in brass and stainless steel, rated to 100 bar and 8 to 11 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 numberK3.0
BrandInterpump
SeriesK3
TypeFlow sensitive
Maximum pressure100 bar
Flow range8 to 11 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

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.

    Related Products

    01 — 00
    Interpump K series 3 Unloader Valve

    Interpump K3 Unloader Valve 11-16 LPM

    SKU: K3.1
    In Stock
    £107.74 inc. vat£89.78 ex vat
    Interpump K3 Unloader Valve 16-21 LPM

    Interpump K3 Unloader Valve 16-21 LPM

    SKU: K3.2
    In Stock
    £107.74 inc. vat£89.78 ex vat
    Interpump K5 Unloader Valve, 11-16 LPM, 200 Bar - Flow-Sensitive Brass and Stainless Steel Pressure Control Valve.

    Interpump K5.1 Unloader Valve 11-16 Lpm flow

    SKU: K5.1
    In Stock
    £121.58 inc. vat£101.32 ex vat
    Interpump K5.3 Pressure Washer Unloader Valve - 200 Bar, Flow-Sensitive

    Interpump K5 Unloader Valve 25-41 Lpm flow

    SKU: K5.3
    In Stock
    £121.58 inc. vat£101.32 ex vat
    Kit 61 K3 Unloader Kit

    Interpump Kit 61

    SKU: KIT61
    In Stock
    Was £103.82 ex vat£100.91 inc. vat£84.09 ex vat

    Get 10% Off Your First Order

    Join our trade list for new-stock alerts, clearance deals and expert cleaning tips. View our Privacy Policy. Unsubscribe at any time.

    Flowjet Cleaning Equipment is a family-run

    business dealing in commercial and industrial

    Pressure Washers

    Customer Service
    Contact UsAbout UsOur BrochuresServicing & RepairMachine Collection & Repair ServiceFinance
    Charts and Drawings
    Pressure Washer Nozzle ChartFoam Nozzle Size ChartParts DrawingFAQsDrone Cleaning EquipmentElectric Motor Sizing Guide
    Information
    Delivery & ReturnsTerms & ConditionsPrivacy PolicyCookie Policy
    Address

    Flowjet Cleaning Equipment LTD

    Unit 4, Gatebeck Farm

    Gatebeck, Kendal

    LA8 0HW

    United Kingdom

    015395 66193sales@flowjet.co.uk
    © 2026. Flowjet Cleaning Equipment Ltd. All rights reserved. Company No. 07548943 / VAT No. 946227313Built by Vitara Commerce
    FacebookTwitterBlogYoutube

    PROMO: Get 10% OFF

    Would you like to save 10% on your order today? Enter your email address to receive a discount code!

    By signing up, you agree to receive marketing emails. View our privacy policy and terms of service for more info.