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Thread-On Unloaders

(Showing 10 of 22)

Threaded models offer flexible installation options for various pump types.

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

    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
    US$328.00
  • P.A. VB 60/600 Zero: 8700 psi @ 16 US gpm Flow-Sensitive Unloader Valve

    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
    US$760.00
    Only 3 in stock
  • P.A. Pulsar Rv: 2300 psi @ 10 US gpm Unloader Bypass Valve w/ Knob

    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
    US$72.00
  • Mecline VRT3 Easy Start: 4060 psi @ 10.5 US gpm Unloader Valve

    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
    US$68.00
  • P.A. VB 140/160: 2300 psi @ 37 US gpm Unloader Valve

    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
    US$236.00
    Only 3 in stock
  • P.A. VB 3: 3200 psi @ 6.5 US gpm Unloader Valve

    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
    US$52.00
  • P.A. VB 450/200: 2900 psi @ 120 US gpm Unloader Valve

    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
    US$920.00
    Only 2 in stock
  • P.A. VB 160/280: 4050 psi @ 42 US gpm Unloader Valve, 303 Stainless Steel

    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
    US$595.00
    Only 2 in stock
  • P.A. VB 200/280: 4050 psi @ 53 US gpm Unloader Valve

    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
    US$548.00
  • P.A. VB 26: 4050 psi @ 21 US gpm Unloader Valve, 316 Stainless Steel, Viton O-rings

    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
    US$680.00
    Only 3 in stock