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1. (WO2014207114) DRIVE FOR VALVES

Pub. No.:    WO/2014/207114    International Application No.:    PCT/EP2014/063541
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Fri Jun 27 01:59:59 CEST 2014
IPC: F16K 31/122
F01D 17/14
Applicants: WELLAND & TUXHORN AG
Inventors: TEBBENHOFF, Olaf
STEINER, Manfred
Title: DRIVE FOR VALVES
Abstract:
The present invention relates to a drive (1) for valves with a shut-off and control function or double locking function with a first drive device (3) with a first fluid drive (7) and a second drive device (5) with a second fluid drive (17). The first and the second fluid drive (7, 17) are arranged behind one another in the axial direction and coaxially with respect to one another. A first drive spindle (9), connected to the first fluid drive (7), of the first drive device (3) is arranged coaxially with respect to a second drive spindle (19), connected to the second fluid drive (17), of the second drive device (15). The first drive spindle (9) extends through the second fluid drive (17).