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Thread-On Unloaders

(Showing 24 of 24)

Threaded models offer flexible installation options for various pump types.

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  • P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve w/ Knob
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    P.A.

    SKU: 041010

    P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve w/ Knob

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $68.00
    Choose Options
  • P.A. VB 350: 5075 psi @ 10.5 US gpm Unloader Valve w/ Knob
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    P.A.

    SKU: 041013

    P.A. VB 350: 5075 psi @ 10.5 US gpm Unloader Valve w/ Knob

    Chemical injector: No
    Inlet: 3/8-in Male
    Outlet: 3/8-in Female
    Bypass: 1/2-in Female
    $110.00
  • Canpump Universal Bypass Kit for 3/8-in Unloader Valve
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    Canpump

    SKU: 500059

    Canpump Universal Bypass Kit for 3/8-in Unloader Valve

    Inlet: 3/4-in Garden Hose Female
    Outlet: 3/8-in Male NPT to 3/8-in Quick-Connect Socket
    Bypass: 3/8-in Male NPT to Barbed Fitting
    $28.00
  • P.A. VB 80/400: 5800 psi @ 21 US gpm Stainless-Steel Unloader Valve
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    P.A.

    SKU: 042001

    P.A. VB 80/400: 5800 psi @ 21 US gpm Stainless-Steel Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $380.00
  • Mecline VRT100 High Flow: 5075 psi @ 26.4 US gpm Unloader Valve
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    Mecline

    SKU: 042007

    Mecline VRT100 High Flow: 5075 psi @ 26.4 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $156.00
    Out of stock
  • P.A. VB 85/310: 4050 psi @ 21 US gpm Unloader Valve
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    P.A.

    SKU: 042005

    P.A. VB 85/310: 4050 psi @ 21 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $118.00
  • P.A. VB 53: 7250 psi @ 21 US gpm Stainless-Steel Unloader Valve
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    P.A.

    SKU: 042004

    P.A. VB 53: 7250 psi @ 21 US gpm Stainless-Steel Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $336.00
  • P.A. VB 130: 2300 psi @ 6.5 US gpm Unloader Valve
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    P.A.

    SKU: 041019

    P.A. VB 130: 2300 psi @ 6.5 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 3/8-in Male
    Outlet: 3/8-in Male
    Bypass: 3/8-in Female
    $47.20
  • Canpump 1/2-in Unloader Valve - 4350 psi @ 21.1 US gpm
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    Canpump

    SKU: 043006

    Canpump 1/2-in Unloader Valve - 4350 psi @ 21.1 US gpm

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $88.00
    Only 1 in stock
  • P.A. VB 85/160: 2300 psi @ 21 US gpm Unloader Valve
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    P.A.

    SKU: 042006

    P.A. VB 85/160: 2300 psi @ 21 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $124.00
    Only 2 in stock
  • P.A. Pulsar Zero: 4050 psi @ 10.5 US gpm Flow-Sensitive Unloader Valve
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    P.A.

    SKU: 041011

    P.A. Pulsar Zero: 4050 psi @ 10.5 US gpm Flow-Sensitive Unloader Valve

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $184.00
  • Canpump Universal 3/8-in Unloader Valve - 4000 psi @ 6.6 US gpm, Easy Start
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    Canpump

    SKU: 043005

    Canpump Universal 3/8-in Unloader Valve - 4000 psi @ 6.6 US gpm, Easy Start

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Male
    Bypass: 3/8-in Female
    $56.00
  • P.A. VB 200/150: 2175 psi @ 53 US gpm Unloader Valve
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    P.A.

    SKU: 043001

    P.A. VB 200/150: 2175 psi @ 53 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1-in Female
    Outlet: 1-in Female
    Bypass: 1-in Female
    $328.00
  • Mecline VRT3 Easy Start: 4060 psi @ 10.5 US gpm Unloader Valve
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    Mecline

    SKU: 041022

    Mecline VRT3 Easy Start: 4060 psi @ 10.5 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $68.00
  • P.A. Pulsar Rv: 2300 psi @ 10 US gpm Unloader Bypass Valve w/ Knob
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    P.A.

    SKU: 041009

    P.A. Pulsar Rv: 2300 psi @ 10 US gpm Unloader Bypass Valve w/ Knob

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $72.00
  • P.A. VB 3: 3200 psi @ 6.5 US gpm Unloader Valve
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    P.A.

    SKU: 041020

    P.A. VB 3: 3200 psi @ 6.5 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 3/8-in Male
    Outlet: 3/8-in Male
    Bypass: 3/8-in Female
    $52.00
  • P.A. VB 60/600 Zero: 8700 psi @ 16 US gpm Flow-Sensitive Unloader Valve
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    P.A.

    SKU: 042000

    P.A. VB 60/600 Zero: 8700 psi @ 16 US gpm Flow-Sensitive Unloader Valve

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $760.00
    Only 2 in stock
  • P.A. VB 450/200: 2900 psi @ 120 US gpm Unloader Valve
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    P.A.

    SKU: 042003

    P.A. VB 450/200: 2900 psi @ 120 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1¼-in Female
    Outlet: 1¼-in Female
    Bypass: 1½-in Female
    $920.00
    Only 3 in stock
  • P.A. VB 140/160: 2300 psi @ 37 US gpm Unloader Valve
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    P.A.

    SKU: 043002

    P.A. VB 140/160: 2300 psi @ 37 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 3/4-in Female
    Outlet: 3/4-in Female
    Bypass: 3/4-in Female
    $236.00
    Only 4 in stock
  • P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve without Knob
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    P.A.

    SKU: 041025

    P.A. Pulsar Rv: 4050 psi @ 10 US gpm Unloader Valve without Knob

    Chemical injector: No
    Inlet: 3/8-in Female
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $60.00
    Choose Options
  • P.A. VB 160/280: 4050 psi @ 42 US gpm Unloader Valve, 303 Stainless Steel
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    P.A.

    SKU: 042077

    P.A. VB 160/280: 4050 psi @ 42 US gpm Unloader Valve, 303 Stainless Steel

    Chemical injector: No
    Inlet: 3/4-in Female
    Outlet: 3/4-in Female
    Bypass: 3/4-in Female
    $595.00
    Only 2 in stock
  • P.A. VB 200/280: 4050 psi @ 53 US gpm Unloader Valve
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    P.A.

    SKU: 043000

    P.A. VB 200/280: 4050 psi @ 53 US gpm Unloader Valve

    Chemical injector: No
    Inlet: 1-in Female
    Outlet: 1-in Female
    Bypass: 1-in Female
    $548.00
  • P.A. VB 26: 4050 psi @ 21 US gpm Unloader Valve, 316 Stainless Steel, Viton O-rings
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    P.A.

    SKU: 042028

    P.A. VB 26: 4050 psi @ 21 US gpm Unloader Valve, 316 Stainless Steel, Viton O-rings

    Chemical injector: No
    Inlet: 1/2-in Female
    Outlet: 1/2-in Female
    Bypass: 1/2-in Female
    $680.00
    Only 3 in stock
  • P.A. VB 8: 3200 psi @ 8 US gpm Unloader Valve with PR16 Micro Switch
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    P.A.

    SKU: 042008

    P.A. VB 8: 3200 psi @ 8 US gpm Unloader Valve with PR16 Micro Switch

    Chemical injector: No
    Inlet: 3/8-in Male
    Outlet: 3/8-in Female
    Bypass: 3/8-in Female
    $107.00
    Out of stock