초록 ▼

A rotatable unitary ball valve is provided, comprising, in combination: (1) a unitary valve housing of plastic material defining a ball valve chamber, intercommunicating first and second fluid ports and first and second fluid passages, and a threaded end connector socket in one passage; (2) an exter

A rotatable unitary ball valve is provided, comprising, in combination: (1) a unitary valve housing of plastic material defining a ball valve chamber, intercommunicating first and second fluid ports and first and second fluid passages, and a threaded end connector socket in one passage; (2) an externally threaded end connector integral with the valve housing, permanently fixed in the end connector socket, and adapted for attachment to a fluid line; and the other fluid passage being adapted for attachment to a fluid line; (3) a ball valve having a through fluid passage intercommunicating the first and second fluid passages of the valve housing only in the open position of the valve, and disposed in the valve chamber for rotation between open and closed positions; closing off intercommunication between the first and second fluid passages via the ball valve chamber and the ball valve through fluid passage in the closed position, and making such intercommunication in the open position; (4) at least one sealing means sealingly disposed between the ball valve and the valve chamber wall, maintaining a fluid-tight seal therewith at least in the closed position of the valve; and (5) means extending to the outside of the valve housing for rotating the valve between open and closed positions.

대표청구항 ▼

A rotatable unitary ball valve comprising, in combination: (1) a unitary valve housing of plastic material defining a ball valve chamber, intercommunicating first and second fluid ports and first and second fluid passages, and a threaded end connector socket in one passage; (2) an externally threade

A rotatable unitary ball valve comprising, in combination: (1) a unitary valve housing of plastic material defining a ball valve chamber, intercommunicating first and second fluid ports and first and second fluid passages, and a threaded end connector socket in one passage; (2) an externally threaded end connector threadably engaged in the threaded end connector socket and permanently fixed therein by fused integration of the threads thereof with the valve housing and adapted for attachment to a fluid line; and the other fluid passage being adapted for attachment to a fluid line; (3) a ball valve having a through fluid passage intercommunicating the first and second fluid passages of the valve housing only in the open position of the valve, and disposed in the valve chamber for rotation between open and closed positions; closing off intercommunication between the first and second fluid passages via the ball valve chamber and the ball valve through fluid passages in the closed position, and making such intercommunication in the open position; (4) at least one sealing means sealingly disposed between the ball valve and the valve chamber wall, maintining a fluid-tight seal therewith at least in the closed position of the valve; and (5) means extending to the outside of the valve housing for rotating the valve between open and closed positions.