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MSS SP-122-2005
- Plastic Industrial Ball Valves
- standard by Manufacturers Standardization Society, 2005
- Publisher: MSS
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1. SCOPE
1.1 This Standard Practice establishesrequirements for plastic industrial ball valves insizes NPS 1/2 to NPS 4, designed for generalindustrial systems for the distribution of pressurizesliquids that are chemically compatible with thepiping material. It reflects the industry practice ofdesign, manufacture, and application of thesevalves.
1.2 This Standard Practice applies to valves havingthe ball seal against two self-lubricating seats of thefollowing types:
a) Union Ball Valves All joint ends havedetachable nuts and end connectors.
b) Single Union Ball Valves Only one jointend as detachable nuts and end connectors, withthe other joints being integral to the valve body.
c) Non-Union Ball Valves All joint ends areintegral to the valve body.
1.1 This Standard Practice establishesrequirements for plastic industrial ball valves insizes NPS 1/2 to NPS 4, designed for generalindustrial systems for the distribution of pressurizesliquids that are chemically compatible with thepiping material. It reflects the industry practice ofdesign, manufacture, and application of thesevalves.
1.2 This Standard Practice applies to valves havingthe ball seal against two self-lubricating seats of thefollowing types:
a) Union Ball Valves All joint ends havedetachable nuts and end connectors.
b) Single Union Ball Valves Only one jointend as detachable nuts and end connectors, withthe other joints being integral to the valve body.
c) Non-Union Ball Valves All joint ends areintegral to the valve body.
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