Title:
SEAL COUPLING SYSTEM FOR VALVE
Document Type and Number:
WIPO Patent Application WO/2014/122265
Kind Code:
A1
Abstract:
A seal coupling system for valve (2) comprises: a coupling portion (3) protruding from the body (4) of the valve (2) along a longitudinal axis (X) and suitable for engaging with a connection seat (5) of a pipe of a plant along which a fluid runs; the coupling portion (3) is provided with a first thread (6) suitable for engaging with a second thread (7) of the connection seat (5); an annular sealing gasket element (8) that is positionable on the coupling portion (3). The annular sealing gasket element (8) has a cross section, according to a plane passing through the longitudinal axis (X), that has a zone of greater thickness (S1), measured orthogonally to the longitudinal axis (X), and a zone of lesser thickness (S2) configured for penetrating and being tightened between the second thread (7) and a surface (17) of the coupling portion (3) when the latter is screwed on the connection seat (5); constraining means (10) is also provided that are configured for preventing a relative rotation of the annular sealing gasket element (8) with respect to the coupling portion (3).
Inventors:
CALEFFI MARCO (IT)
Application Number:
PCT/EP2014/052435
Publication Date:
August 14, 2014
Filing Date:
February 07, 2014
Export Citation:
Assignee:
CALEFFI SPA (IT)
International Classes:
F16J15/10; F16J15/06; F16L15/04; F16L29/00; F16L55/11
Foreign References:
| DE2237351A1 | 1974-02-07 | |||
| DE2230740A1 | 1974-01-17 | |||
| EP1785656A2 | 2007-05-16 | |||
| DD152397A1 | 1981-11-25 | |||
| DE102006015263A1 | 2007-10-04 | |||
| DE9204534U1 | 1992-10-29 |
Other References:
None
Attorney, Agent or Firm:
CANDITO, Rocco et al. (Via E. De Amicis 25, Milan, IT)
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