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    Stop-Lok Couplers

    OPW Stop-Lok™ Multi-application Couplers are engineered for high heat, high pressure, and demanding liquid transfer applications. Offering a more secure connection than traditional Kamvalok® camlock couplers, Stop-Lok™ couplers feature an innovative tool-free locking design and cannot be overtightened; simply hand tighten the scalloped collar, and "when it stops, it's locked." The tightening sleeve protects dual O-ring seals that offer enhanced leak protection and helps prevent thread galling. A smooth-bore design ensures optimal, unrestricted flow through the entire fitting without any variation in pipe diameter. Stop-Lok™ couplers are made of 316 stainless steel and engineered to operate up to 400 PSI and temperatures from -20° F to 400° F depending on the seal type*.

    Couplings below have FNPT connections with FKM (Viton®) seals. Multiple other connection types and seal options available. *Confirm product chemical compatibility against seal selection!

    NOTE: Two-piece construction – Must order coupler half and corresponding adapter half for complete coupling. Halves sold separately
    0Types Available
    Picture of Stop-Lok Coupler, 3/4" FPT
    Stop-Lok Coupler, 3/4" FPT
    Union Coupler, Stop-Lok, 3/4IN FPT, 316SS, FKM/Viton Seals
    SKU: OPSLC07V
    VIEW CATALOG PAGE E0853
    $305.00 / EA
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

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    Picture of Stop-Lok Coupler, 1" FPT
    Stop-Lok Coupler, 1" FPT
    Union Coupler, Stop-Lok, 1IN FPT, 316SS, FKM/Viton Seals
    SKU: OPSLC10V
    VIEW CATALOG PAGE E0853
    $329.00 / EA
    i h
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

    *

    Ship my in-stock items now, ship my backordered items when they become available. (You will be billed for each shipment).

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    Picture of Stop-Lok Coupler, 1-1/2" FPT
    Stop-Lok Coupler, 1-1/2" FPT
    Union Coupler, Stop-Lok, 1-1/2IN FPT, 316SS, FKM/Viton Seals
    SKU: OPSLC15V
    VIEW CATALOG PAGE E0853
    $379.00 / EA
    i h
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

    *

    Ship my in-stock items now, ship my backordered items when they become available. (You will be billed for each shipment).

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    Picture of Stop-Lok Coupler, 2" FPT
    Stop-Lok Coupler, 2" FPT
    Union Coupler, Stop-Lok, 2IN FPT, 316SS, FKM/Viton Seals
    SKU: OPSLC20V
    VIEW CATALOG PAGE E0853
    $445.00 / EA
    i h
    Ship to

    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

    *

    Ship my in-stock items now, ship my backordered items when they become available. (You will be billed for each shipment).

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    Picture of Stop-Lok Coupler, 3" FPT
    Stop-Lok Coupler, 3" FPT
    Union Coupler, Stop-Lok, 3IN FPT, 316SS, FKM/Viton Seals
    SKU: OPSLC30V
    VIEW CATALOG PAGE E0853
    $564.00 / EA
    i h
    Ship to

    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

    *

    Ship my in-stock items now, ship my backordered items when they become available. (You will be billed for each shipment).

    *
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