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KPTI018-EN rev 0 2016-08-23
Please visit OPW’s website: www.opwglobal.com for further information
1. INSTALLATION
1. The riser nipple must be cut square and deburred.
2. Apply pipe dope to the nipple. Pipe dope to be non-hardening, gasoline resistant pipe thread
seal compound.
3. Tighten the adaptor onto the nipple with a torque of 90 ft-lbs min. to 110 ft-lbs max. This will be
enough torque to seat and seal the gasket.
2. TORQUE SPECIFICATION
Adaptor, 4” NPSM, 90 ft-lbs minimum to 110 ft-lbs maximum.
3. PREVENTIVE MAINTENANCE
Annually, inspect the adaptor for large dents, cracks or deformation. Replace if necessary.
Check the vapor poppet for damage and ensure that the poppet seats evenly with the adaptor.
Clean out any foreign objects from the vapor poppet’s seal and seal surface if necessary.
Test the poppet seal by applying a soap solution to the poppet while the storage tank is under a
positive gauge pressure of at least 2.00 inches W.C and inspect for the presence of bubbles. If the
facility continuously operates under vacuum, a bag test may be used by sealing a clear plastic bag
to the adaptor’s sides. If no bubbles appear at the poppet under positive pressure or the bag test
shows no signs of the bag collapsing, no further maintenance is required. If bubbles appeared
around the poppet seal or the bag collapsed, replace the poppet components and re-test.
4. REPLACEMENT PARTS
Complete poppet replacement, P/N 61VSA-KIT
Gasket, P/N H04145M (3” Riser)
Gasket, P/N H04150M (4” Riser)
