Emerson VSM, VSR, VSS service manual Stop Check Valve Installation, Correct, WrongWrong

Stop Check Valve Installation

Correct Correct

WrongWrong

Verify the location of the Spring and note the Vilter name.

Installation:

The new design will apply only to the 2” thru 4” stop valves. Retrofitting a field installation will require replacing the bonnet assembly.

The bonnet must be installed with the spring towards the bottom (see illustrations above). The drill fixture is designed so that the hole for the spring will always be drilled on the oppo- site side from the cast-in Vilter name on the bonnet. From the outside of the valve, the casting numbers must always be towards the top of the valve.

See Operation Section on Stop Check Operation.

31