ES457769A1 - Double seat valve with dual sealing spring - has coil spring moving over centre to operate valve closure and resistant to pressure fluctuations - Google Patents

Double seat valve with dual sealing spring - has coil spring moving over centre to operate valve closure and resistant to pressure fluctuations

Info

Publication number
ES457769A1
ES457769A1 ES457769A ES457769A ES457769A1 ES 457769 A1 ES457769 A1 ES 457769A1 ES 457769 A ES457769 A ES 457769A ES 457769 A ES457769 A ES 457769A ES 457769 A1 ES457769 A1 ES 457769A1
Authority
ES
Spain
Prior art keywords
valve
seat
coil spring
resistant
pressure fluctuations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES457769A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADAR
Original Assignee
ADAR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ADAR filed Critical ADAR
Publication of ES457769A1 publication Critical patent/ES457769A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)
  • Lift Valve (AREA)

Abstract

The double seat valve has an inlet (9) and outlet (10) separated by the valve seat (3) and piston valve (7). The valve piston has an inner seat (37) sealed by the valve head (32) attached to the actuating rod (8). A helical coil spring (44) tends to lift the valve head (32) off the seat (37). With the piston valve (7) on its seat (3) the coned disc spring (47) tends to push the valve head (32) on to the seat (37) with a force greater than that of the coil spring (44). When the rod (8) is lifted upwards to open the inner valve (32), in order to open the main valve (7), the coned disc spring is deflected past its neutral position and then exerts an upward force which keeps the inner valve open.
ES457769A 1976-06-29 1977-04-13 Double seat valve with dual sealing spring - has coil spring moving over centre to operate valve closure and resistant to pressure fluctuations Expired ES457769A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7619726A FR2356858A1 (en) 1976-06-29 1976-06-29 Double seat valve with dual sealing spring - has coil spring moving over centre to operate valve closure and resistant to pressure fluctuations

Publications (1)

Publication Number Publication Date
ES457769A1 true ES457769A1 (en) 1978-02-16

Family

ID=9174980

Family Applications (1)

Application Number Title Priority Date Filing Date
ES457769A Expired ES457769A1 (en) 1976-06-29 1977-04-13 Double seat valve with dual sealing spring - has coil spring moving over centre to operate valve closure and resistant to pressure fluctuations

Country Status (3)

Country Link
DE (1) DE2719292C3 (en)
ES (1) ES457769A1 (en)
FR (1) FR2356858A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798223A (en) * 1987-11-09 1989-01-17 Skotch, Inc. Double block and vent valve system
DE10027276C2 (en) * 2000-05-31 2002-11-14 Honeywell Bv Gas control valve
DE102005058526B4 (en) * 2005-12-08 2019-06-19 Robert Bosch Gmbh Two-stage valve for controlling fluids

Also Published As

Publication number Publication date
DE2719292C3 (en) 1979-04-26
DE2719292A1 (en) 1978-01-05
FR2356858A1 (en) 1978-01-27
DE2719292B2 (en) 1978-08-31

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