Collection: Diaphragm Pumps

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Pressure Washing Supplies UK is a UK supplier of pressure washing equipment, pumps, hose reels, hoses, valves, fittings and replacement parts for professional, agricultural and industrial use.

  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219005200
    • For BP20/15, BP40K, BP75 pumps
    • 15 Bar, grey
    • 3/8"BSPM thread
    • 13mm hose barb
    • Remote mount valve
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet Safety Valve
    Comet Safety Valve
    Part No: 1219005100
    • For APS71, APS96 pumps
    • 50 bar, red
    • 3/8"BSPM thread
    • 13mm hose barb
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219004600
    • For APS31, APS41...
    • ...APS51, APS61 pumps
    • 40 Bar, orange
    • 3/8"BSPM thread
    • 13mm hose barb
    • Remote mount valve
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219004500
    • For MP20, MP30, P48/AP, P50 pumps
    • 30 Bar, blue
    • 3/8"BSPM thread
    • 13mm hose barb
    • Remote mount valve
    Regular price £30.94 GBP
    Regular price Sale price £30.94 GBP
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  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219004400
    • For BP205K, BP235K, BP241...
    • ...BP251HS, BP265, BP280K...
    • ...BPS200, BPS260, BPS300...
    • ...BP281, BP291HS, BP300, BP305...
    • ...BP330HS,BP600K pumps
    • 20 Bar, green
    • 3/4"BSPM thread
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219004300
    • For BP151K, BP171K pumps
    • 20 Bar, green
    • 1/2"BSPM thread
    • 19mm hose barb
    • Remote mount valve
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet GVS Safety Valve
    Comet GVS Safety Valve
    Part No: 1219004200
    • For BP60K, BP105K, BP125K pumps
    • 20 Bar, green
    • 3/8"BSPM thread
    • 13mm hose barb
    • Remote mount valve
    Regular price £30.94 GBP
    Regular price Sale price £30.94 GBP
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  • Comet Safety Valve
    Comet Safety Valve
    Part No: 1219004100
    • For APS101, APS121, APS141...
    • ...APS145, APS166 pumps
    • 50 Bar, red
    • 1/2"BSPM thread
    • 19mm hose barb
    Regular price £32.19 GBP
    Regular price Sale price £32.19 GBP
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  • Comet VRS 1V Regulation Valve
    Comet VRS 1V Regulation Valve
    Part No: 1215028700
    • 50 Bar
    • 240 Lpm
    • Brass construction
    • ø23mm hose barb bypass
    • 3/4"BSPM inlet
    • For APS145, IDS Series...
    • ...& YA130/150 pumps
    Regular price £369.51 GBP
    Regular price Sale price £369.51 GBP
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  • Comet Genius Controlset
    Comet Genius Controlset
    Part No: 1204095300
    • 20 Bar
    • 25 Lpm
    • PA6 Nylon body
    • For BPX25 pump
    • Direct pump mount
    • Front mounted gauge
    • 10mm hose barb outlet on 1/2"BSP M thread
    Regular price £86.04 GBP
    Regular price Sale price £86.04 GBP
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  • Comet Genius Controlset
    Comet Genius Controlset
    Part No: 1204095200
    • 15 Bar
    • 25 Lpm
    • Polypropylene body
    • For BPX25 pump
    • Direct pump mount
    • Front mounted gauge
    • 10mm hose barb outlet on 1/2"BSP M thread
    Regular price £100.01 GBP
    Regular price Sale price £100.01 GBP
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  • Comet Genius Controlset
    Comet Genius Controlset
    Part No: 1204095100
    • 20 Bar
    • 25 Lpm
    • Nylon body
    • For BPX25 pump
    • Direct pump mount
    • Front mounted gauge
    • 10mm hose barb outlet on 1/2"BSP M thread
    Regular price £94.13 GBP
    Regular price Sale price £94.13 GBP
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  • Comet VR10 Controlset
    Comet VR10 Controlset
    Part No: 1204066200
    • 10 Bar
    • 50 Lpm
    • Quick connect hook inlet
    • 13mm hose barb bypass
    • Polypropylene & stainless steel
    • For P36/10 twin outlet pump
    • Direct pump mount
    Regular price £82.73 GBP
    Regular price Sale price £82.73 GBP
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  • Comet HPR-2 Controlset
    Comet HPR-2 Controlset
    Part No: 1204057500
    • 50 Bar
    • 150 Lpm
    • For 50 Bar APS, IDS, YA pumps
    • Direct pump mount (needs mounting kit)
    • Top mounted gauge
    • 3x 1/2" BSP male outlets
    • 3/4"BSP male inlet
    Regular price £239.20 GBP
    Regular price Sale price £239.20 GBP
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  • Comet GCP3V Controlset
    Comet GCP3V Controlset
    Part No: 1204057100
    • 40 Bar
    • 100 Lpm
    • 3x 10mm hose barb outlets
    • 23mm hose barb bypass
    • For APS71, APS96 pumps
    • Direct pump mount
    Regular price £142.54 GBP
    Regular price Sale price £142.54 GBP
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  • Comet GCP3V Controlset
    Comet GCP3V Controlset
    Part No: 1204057000
    • 40 Bar
    • 100 Lpm
    • 3x 10mm hose barb outlets
    • 23mm hose barb bypass
    • For APS71, APS101 pumps
    • Direct pump mount
    Regular price £142.54 GBP
    Regular price Sale price £142.54 GBP
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  • Comet Sirius Controlset
    Comet Sirius Controlset
    Part No: 1204052300
    • 15 Bar
    • 40 Lpm
    • 3x 10mm hose barb outlets
    • 19mm hose barb bypass
    • For BP20/15, BP40K pumps
    • Direct pump mount
    Regular price £93.99 GBP
    Regular price Sale price £93.99 GBP
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  • Comet Sirius Controlset
    Comet Sirius Controlset
    Part No: 1204049500
    • 30 Bar
    • 40 Lpm
    • 2x 10mm hose barb outlets
    • 19mm hose barb bypass
    • For P48/AP, P50 pumps
    • Direct pump mount
    Regular price £78.53 GBP
    Regular price Sale price £78.53 GBP
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  • Comet Hydra Controlset
    Comet Hydra Controlset
    Part No: 1204049200
    • 25 Bar
    • 20 Lpm
    • 10mm hose barb outlets
    • 13mm hose barb bypass
    • Polypropylene & stainless steel
    • For MC25 pump
    • Direct pump mount
    Regular price £65.22 GBP
    Regular price Sale price £65.22 GBP
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