Patent ID: 6305081
Filing Date: 2001-10-23
Classification: B60H,F16K,F25B,Y10T

Abstract:
A method of installing and servicing an HVAC system comprising the steps of:providing a housing having an internal passage, a valve body in the housing moveably operable to control process fluid flow through the passage, a chamber in the valve body open to the internal passage at a first chamber end, and a secondary valve stem in the chamber and controlling access therethrough;attaching a service adapter to a second end of the chamber, the service adapter including a body arranged about an internal passageway, a first end on the body, a shaft in the internal passageway, and an extensor portion projecting from the shaft past the first end;contacting the secondary valve stem with the extensor portion of the service adapter;biasing the secondary valve stem with the extensor portion to an open position allowing service fluid flow through the chamber; andservicing process fluid through the chamber.