JPS57149673A - Double seal valve - Google Patents

Double seal valve

Info

Publication number
JPS57149673A
JPS57149673A JP3574981A JP3574981A JPS57149673A JP S57149673 A JPS57149673 A JP S57149673A JP 3574981 A JP3574981 A JP 3574981A JP 3574981 A JP3574981 A JP 3574981A JP S57149673 A JPS57149673 A JP S57149673A
Authority
JP
Japan
Prior art keywords
valve
external
internal
opening
valve element
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.)
Pending
Application number
JP3574981A
Other languages
Japanese (ja)
Inventor
Katsu Mochizuki
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.)
Iwai Kikai Kogyo Co Ltd
Original Assignee
Iwai Kikai Kogyo Co Ltd
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 Iwai Kikai Kogyo Co Ltd filed Critical Iwai Kikai Kogyo Co Ltd
Priority to JP3574981A priority Critical patent/JPS57149673A/en
Publication of JPS57149673A publication Critical patent/JPS57149673A/en
Pending 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
    • 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
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
    • F16K1/446—Details of seats or valve members of double-seat valves the seats being in series with additional cleaning or venting means between the two seats

Landscapes

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

Abstract

PURPOSE:To prevent the liquid at the incoming pipe side from mixing with that at the valve chest side even in the event of leakage owing to intrusion of foreign matters by furnishing internal and external valve elements and an opening/ closing member solidly as in a single body at the inside edge of the valve stem. CONSTITUTION:When the valve stem 11 proceeds, the external and internal valve elements 12, 13 are placed on the external and internal valve seats 9, 10 and, at the same time, the returning part 14 retracts the opening/closing member 7 against the force applied by a repulsive machine 8, and the incoming pipe 2 is then put in closed position. If a leakage happens at this time owing to imperfect closing of the external or internal valve element 12, 13 caused by intrusion of foreign matters between the external valve element 12 and valve seat 9 or between the internal valve element 13 and valve seat 10, the leak liquid from the external valve element 12 flows down at the outside surface of the returning part 14 and opening/closing part 7 while the leak liquid from the internal valve element 13, at the inside surfaces of the returning part 14 and opening/closing member 7 individually to be exhausted from a drainage hole 4.
JP3574981A 1981-03-12 1981-03-12 Double seal valve Pending JPS57149673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3574981A JPS57149673A (en) 1981-03-12 1981-03-12 Double seal valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3574981A JPS57149673A (en) 1981-03-12 1981-03-12 Double seal valve

Publications (1)

Publication Number Publication Date
JPS57149673A true JPS57149673A (en) 1982-09-16

Family

ID=12450464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3574981A Pending JPS57149673A (en) 1981-03-12 1981-03-12 Double seal valve

Country Status (1)

Country Link
JP (1) JPS57149673A (en)

Similar Documents

Publication Publication Date Title
ES8400813A1 (en) Valve assembly
ES2131799T3 (en) BUTTERFLY VALVE ASSEMBLY AND MANUFACTURING METHOD.
DK0781151T3 (en) Valve intravenous fluid conduit for an infusion device
GB2362908A (en) Valves for use in wells
NO892053D0 (en) Three-way butterfly valves.
BR0113702B1 (en) valve body and shut-off valve.
GB1208234A (en) Improved fluid flow control valve
MX159056A (en) IMPROVEMENTS IN GATE VALVE
CA2313207A1 (en) Valve with ball of controlled deformation
KR830006608A (en) Mixing valve
CA2066398A1 (en) Tank bottom diaphragm valve
ES2122830A1 (en) rotary valve
SE9902879L (en) Valve with lifting valve body
JPS57149673A (en) Double seal valve
JPS6412181A (en) Motor-driven three-way valve
JPS57144358A (en) Pivoting valve
JPS5649473A (en) Double sealed valve
JPS57149674A (en) Double seal valve
JPS6321819Y2 (en)
US4009863A (en) Composite lip seal for lavatory or sink valve
SE9003674D0 (en) VALVE FOR TWO OR MULTI-WAY FLOW REGULATION
JP2583538Y2 (en) Flow control device
FR2346620A1 (en) SHUT-OFF VALVE WITH SYMMETRICAL CLOSING ELEMENT AROUND ITS AXIS
JPS639643Y2 (en)
FR2253971A1 (en) Non-return ball valve for liquids - has ball constrained in cage sitting on annular sealing shoulding