Flowjet Cleaning Equipment LTD offer more than just a range of standard cleaning equipment. We also make bespoke industrial cleaning equipment for specific cleaning applications. Flowjet offers repairs or maintenance of your pressure washer, whichever make or model. We work closely with Nilfisk, DTE, IPC & Dirt Driver and also Dema.

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    Flow (Site Cleaning)
    1. 11 LPM
    2. 15 LPM
    3. 16 LPM
    4. 21 LPM
    5. 25 LPM
    6. 30 LPM
    7. 41 LPM
    8. 50 LPM
    9. 60 LPM
    10. 200 LPM
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    Temperature (Site Cleaning)
    1. 60
    2. 80
    3. 85

    Interpump Unloader Valves

    Interpump K-Series Unloader Valves are flow sensitive.

    Flow sensitive unloader bypass valve
    When the pressure washer is in bypass mode the line pressure is reduced to zero. 

    Zero Pressure Unloaders K-SERIES

    Zero Pressure Unloaders / Flow Sensitive have a timer (control) but this is not essential for the machine to operate. The machine will time out after 2 mins in bypass (pre-set time). This is called "Total Shutdown" and the machine will then need restarting on the main switch after the time has elapsed. This type of unloader valve (K-SERIES) has zero pressure in the hoses. All the water is pumped back to the inlet or header tank. Manufactures such as DTE and Dirt Driver, prefer this system as the machine will never surge (intermittent stop-start).

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    1-36 of 46

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    • CODE: -10000072

      INTERPUMP K7.2 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:16-25 L/Min

      Regular Price: £104.35

      Special Price Excl. VAT: £69.57 Incl. VAT: £83.48

    • CODE: -10000560

      INTERPUMP H560 UNLOADER VALVE


      • Inlet:1/2" F
      • Outlet:1/2" F
      • Max Press:500 Bar
      • Max Temp:80°C
      • Max Flow:60 L/Min

      Regular Price: £1,268.40

      Special Price Excl. VAT: £845.60 Incl. VAT: £1,014.72

    • CODE: -10001253

      INTERPUMP H253 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:250 Bar
      • Max Temp:80°C
      • Max Flow:8-30 L/Min

      Regular Price: £757.20

      Special Price Excl. VAT: £504.80 Incl. VAT: £605.76

    • CODE: -01000200

      INTERPUMP HM UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:5-41 L/Min

      Regular Price: £106.32

      Special Price Excl. VAT: £70.88 Incl. VAT: £85.06

    • CODE: -01001001

      INTERPUMP TIMAX UNLOADER VALVE


      • Inlet:3/4" F
      • Outlet:1/2" F
      • Max Press:60 Bar
      • Max Temp:80°C
      • Max Flow:200 L/Min

      Regular Price: £166.80

      Special Price Excl. VAT: £111.20 Incl. VAT: £133.44

    • CODE: -10000010

      INTERPUMP K1 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:250 Bar
      • Max Temp:80°C
      • Max Flow: 9-41L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: -10000030

      INTERPUMP K3 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2"M
      • Max Press: 100 Bar
      • Flow:8-11 L/Min
      • Max Temp:80°C

      Regular Price: £104.40

      Special Price Excl. VAT: £69.60 Incl. VAT: £83.52

    • CODE: -10000031

      INTERPUMP K3.1 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2"M
      • Max Press: 100 Bar
      • Flow:11-16 L/Min
      • Max Temp:80°C

      Regular Price: £104.40

      Special Price Excl. VAT: £69.60 Incl. VAT: £83.52

    • CODE: -10000032

      INTERPUMP K3.2 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2"M
      • Max Press: 100 Bar
      • Flow:16-21 L/Min
      • Max Temp:80°C

      Regular Price: £104.40

      Special Price Excl. VAT: £69.60 Incl. VAT: £83.52

    • CODE: -10001440

      INTERPUMP H450 UNLOADER VALVE


      • Inlet:1/2" F
      • Outlet:1/2" M
      • Max Press:400 Bar
      • Max Temp:80°C
      • Max Flow:50 L/Min

      Regular Price: £555.60

      Special Price Excl. VAT: £370.40 Incl. VAT: £444.48

    • CODE: GSBKXRK

      UNLOADER BKX REPAIR KIT


      Excl. VAT: £784.00 Incl. VAT: £940.80
    • CODE: -10000070

      INTERPUMP K7 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow: 8-11 L/Min

      Regular Price: £91.10

      Special Price Excl. VAT: £60.74 Incl. VAT: £72.89

    • CODE: -10000284

      INTERPUMP H284 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:280 Bar
      • Max Temp:85°C
      • Max Flow:8-41 L/Min

      Regular Price: £126.00

      Special Price Excl. VAT: £84.00 Incl. VAT: £100.80

    • CODE: -10000073

      INTERPUMP K7.3 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:25-41 L/Min

      Regular Price: £157.20

      Special Price Excl. VAT: £104.80 Incl. VAT: £125.76

    • CODE: -10000071

      INTERPUMP K7.1 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:11-16 L/Min

      Regular Price: £157.20

      Special Price Excl. VAT: £104.80 Incl. VAT: £125.76

    • CODE: 10000030

      Unloader Valve K3.0 8-11L


      • Inlet:3/8" F
      • Outlet:1/2"M
      • Max Press: 100 Bar
      • Flow:8-11 L/Min
      • Max Temp:80°C

      Regular Price: £104.34

      Special Price Excl. VAT: £69.56 Incl. VAT: £83.47

    • CODE: 01000003

      Unloader BKX 600 Bar 60 L/Min Repair Kit


      • to suit:
      • part no. 01000002
      Excl. VAT: £105.00 Incl. VAT: £126.00
    • CODE: 36313522

      W2 Unloader Inlet Manifold


      Excl. VAT: £23.60 Incl. VAT: £28.32
    • CODE: W2263

      Interpump W2 Controlset - 16-21 Lpm


      • 200 Bar max pressure
      • 16-21 Lpm flow
      • 60°C max water temperature
      • Adjustable chemical injection
      • Brass & st.steel construction
      Excl. VAT: £108.75 Incl. VAT: £130.50
    • CODE: -01000002

      INTERPUMP BKX UNLOADER VALVE


      • 600 Bar max pressure
      • 60 Lpm max flow
      • 60°C max water temperature
      • Flow sensitive valve
      • Brass & st.steel construction
      • 1/2"BSPF inlet
      • 1/2"BSPF outlet

      Regular Price: £1,826.40

      Special Price Excl. VAT: £1,217.60 Incl. VAT: £1,461.12

    • CODE: -01000230

      INTERPUMP W2-1 UNLOADER VALVE


      • Inlet:1/2" Female
      • Outlet: 3/8" Male
      • Max; 200 Bar
      • Max: 60°C
      • Max: 11-15 L/min

      Regular Price: £168.00

      Special Price Excl. VAT: £112.00 Incl. VAT: £134.40

    • CODE: -01000231

      INTERPUMP W2-2 UNLOADER VALVE


      • Inlet:1/2" Female
      • Outlet: 3/8" Male
      • Max; 200 Bar
      • Max: 60°C
      • Max: 16-21 L/min

      Regular Price: £168.00

      Special Price Excl. VAT: £112.00 Incl. VAT: £134.40

    • CODE: -01000235

      INTERPUMP W2L-1 UNLOADER VALVE


      • Inlet:1/2" Female
      • Outlet: 3/8" Male
      • Max; 200 Bar
      • Max: 60°C
      • Max: 11-15 L/min

      Regular Price: £158.40

      Special Price Excl. VAT: £105.60 Incl. VAT: £126.72

    • CODE: -01000236

      INTERPUMP W2L-2 UNLOADER VALVE


      • Inlet:1/2" Female
      • Outlet: 3/8" Male
      • Max; 200 Bar
      • Max: 60°C
      • Max: 16-21 L/min

      Regular Price: £158.40

      Special Price Excl. VAT: £105.60 Incl. VAT: £126.72

    • CODE: -10000051

      INTERPUMP K5.1 UNLOADER VALVE 11-16 LPM


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow: 11-16L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: -10000052

      INTERPUMP K5.2 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:16-25 L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: -10000053

      INTERPUMP K5.3 UNLOADER VALVE


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow: 25-41L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: 10000032

      Unloader Valve K3.2 16-21L


      • Inlet:3/8" F
      • Outlet:1/2"M
      • Max Press: 100 Bar
      • Flow:16-21 L/Min
      • Max Temp:80°C

      Regular Price: £104.34

      Special Price Excl. VAT: £69.56 Incl. VAT: £83.47

    • CODE: 10000051

      Unloader Valve K5.1 11-16L


      • 200 Bar max pressure
      • 11-16 Lpm flow
      • 60°C max water temperature
      • Flow-sensitive valve
      • Brass & st.steel construction
      • 3/8"BSPF inlet
      • 1/2"BSPM outlet

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: 01000200

      Unloader Valve HM 5-41L


      • Inlet:3/8" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:5-41 L/Min

      Regular Price: £106.31

      Special Price Excl. VAT: £70.87 Incl. VAT: £85.04

    • CODE: 10000052

      Unloader Valve K5.2 16-25L


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow:16-25 L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: 01000231

      Unloader Valve W2.2 16-21L M22 X M22


      • Inlet:1/2" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:60°C
      • Max Flow: 16-21L/Min

      Regular Price: £167.12

      Special Price Excl. VAT: £111.42 Incl. VAT: £133.70

    • CODE: 10000053

      Unloader Valve K5.3 25-41L


      • Inlet:3/8" F
      • Outlet:1/2" M
      • Max Press:200 Bar
      • Max Temp:80°C
      • Max Flow: 25-41L/Min

      Regular Price: £116.23

      Special Price Excl. VAT: £77.49 Incl. VAT: £92.99

    • CODE: 01000235

      Unloader Valve W2L-1 11-15L M22 X M22


      • Inlet:1/2" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:60°C
      • Max Flow:11-15 L/Min

      Regular Price: £157.73

      Special Price Excl. VAT: £105.15 Incl. VAT: £126.18

    • CODE: 01000236

      Unloader Valve W2L-2 16-21L M22 X M22


      • Inlet:1/2" F
      • Outlet:3/8" M
      • Max Press:200 Bar
      • Max Temp:60°C
      • Max Flow:16-21 L/Min

      Regular Price: £157.73

      Special Price Excl. VAT: £105.15 Incl. VAT: £126.18

    • CODE: 01001001

      Unloader Valve Timax 60 Bar 200 L/M


      • Inlet:3/4" F
      • Outlet:1/2" F
      • Max Press:60 Bar
      • Max Temp:80°C
      • Max Flow:200 L/Min

      Regular Price: £166.68

      Special Price Excl. VAT: £111.12 Incl. VAT: £133.34

    Set Descending Direction

    1-36 of 46

    Page:
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    Interpump Unloader Valves

    When the pressure washer is in bypass mode the line pressure is reduced to zero.