(08) 9472-3494  | sales@liquipwestcoast.com.au

Check Valve Spools


Liquip's check valve spools are designed to hold back the product in the loading arm so that the pipework will not drain when the API coupler is opened.

Since the arm can no longer be drained by just opening the coupler, 2 drain bosses have been incorporated into the check valve spool. 

  1. On the API side of the poppet - allows product to be drained from the outlet side of the CVS120, for removal and servicing of the API coupler.
  2. On the loading arm side of the poppet - allows sampling or complete draining of the loading arm for servicing and repair of up stream components like the outboard swivel and hose.

Features & Benefits
  • Can be used to avoid product contamination.
  • Prevents pilfering by not allowing drainage of the drop hose section.
  • Product flow through the loading arm opens the poppet inside the check valve spool.
  • Can be fitted with a sightglass to show presence of product.
  • 2 drain bosses have been incorporated into the valve.

Technical Information

-Aluminium body, poppet and spider.
-Stainless steel spring & high-tensile steel shaft.
-Viton product seal.
-Brass drain plugs and over pressure valve.

Opening pressure in flow direction
 45 kPa (6.5 PSI).

Over pressure in non-flow direction
30 kPa (4.5 PSI) (emergency relief in reverse direction to allow for thermal expansion).

4.5 kg.

Ordering Information

CVS120: 4" TTMA Check Valve Spool for load arms.

CVS120Z: 4" TTMA Check Valve Spool kit for load arms c/w gasket and mounting fasteners.

CVS120SGZ: 4" TTMA Check Valve Spool kit for Load arms c/w with gasket, mounting fasteners and flanged sightglass.

Associated Equipment

VSA4: 4" aluminium loading arm coupler spool (15o angle) - 200mm long. 

VSS4: 4" aluminium loading arm coupler spool (straight) - 200mm long.

VSA4-SHORT: 4" aviation selective loading arm coupler spool (15o angle) - 122mm length.

BF4-SG-40: 4" TTMA Acrylic sightglass 40mm thickness.

BF4-SG-25: 4" TTMA Acrylic sightglass 25mm thickness.


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