Document Type and Number:
Japanese Patent JPH0579871
Kind Code:
B2
Abstract:
The valve (10) comprises a housing (12) having an open-ended portion (14) of circular internal cross-section, an inlet port and an outlet port, the ports being interconnected by a flow space (16). An obturator (20) is located within the flow space (16) and attached to a movable head (18) such that fluid flow through the valve (10) may be regulated by the obturator (20) by movement of the head (18). The head (18) retains a seal (30) which bears upon the inner surface of the portion (14) of the housing (12) so as to resist fluid flow past the head (18).
Preferred features include the provision of biasing means which maintain the seal (30) in a state of compression and a seal (30) which has the form of a hollow open-ended cylinder in which the hollow is frusto conical in shape. A bellows (24) connecting the head (18) to the housing (12) and/or a seal (28) provided on the head (18) and bearing against an external cover (26) to provide secondary seals against leakage from the flow space (16).
Included is the provision of a leak detector (64), a readily dismantable valve and a specialised form of obturator (20).
Inventors:
DEIBITSUDO BAARAMU
Application Number:
JP17784881A
Publication Date:
November 05, 1993
Filing Date:
November 07, 1981
Export Citation:
Assignee:
DEIBITSUDO BAARAMU
International Classes:
F16K31/122; F16K41/00; F16K41/10; (IPC1-7): F16K31/122; F16K41/10
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