GB621498A - Improvements relating to pressure release or exhaust valves - Google Patents

Improvements relating to pressure release or exhaust valves

Info

Publication number
GB621498A
GB621498A GB387446A GB387446A GB621498A GB 621498 A GB621498 A GB 621498A GB 387446 A GB387446 A GB 387446A GB 387446 A GB387446 A GB 387446A GB 621498 A GB621498 A GB 621498A
Authority
GB
United Kingdom
Prior art keywords
exhaust
press
port
passage
ports
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
GB387446A
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.)
PREC DEVELOPMENTS CO Ltd
Original Assignee
PREC DEVELOPMENTS 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 PREC DEVELOPMENTS CO Ltd filed Critical PREC DEVELOPMENTS CO Ltd
Priority to GB387446A priority Critical patent/GB621498A/en
Publication of GB621498A publication Critical patent/GB621498A/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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

621,498. Hydraulic presses; multiple-way valves. PRECISION DEVELOPMENTS CO., Ltd., BOX, F. J., and OLAH, G. Feb. 7, 1946, No. 3874. [Classes 69 (ii) and 135] Pressure liquid is exhausted from a hydraulic press &c. in two stages, first at a slow rate, during which the elastic strain in the press cylinder is relieved, and then rapidly. Fig. 2 shows a valve in which the flow from a press port 6 to an exhaust port 5 is controlled by a hand-operated piston 3 having a groove 12 connected by a radial hole 15 to a bore 13 communicating with a chamber 14 connected by a restricted passage 7, 8 to the exhaust port. In use, the valve is pushed inwards so that the groove overlaps the port 6 and liquid from the press flows into the chamber. and thence through the passage 7, 8 to the exhaust. The back pressure initially developed in the chamber arrests the movement of the piston. However, continued exhaust of liquid through the passage results in a fall in the back pressure until the inward stroke of the piston can be completed, thus permitting direct and full flow between the ports 6 and 5. Fig. 6 shows a modification in which the valve is provided with a pressure liquid supply port 18 in addition to the exhaust and press ports 5, 6 respectively. In the position shown, the ports 6, 18 are both in direct communication with the exhaust port 5 through the bore 17 and the passage 21 respectively.
GB387446A 1946-02-07 1946-02-07 Improvements relating to pressure release or exhaust valves Expired GB621498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB387446A GB621498A (en) 1946-02-07 1946-02-07 Improvements relating to pressure release or exhaust valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB387446A GB621498A (en) 1946-02-07 1946-02-07 Improvements relating to pressure release or exhaust valves

Publications (1)

Publication Number Publication Date
GB621498A true GB621498A (en) 1949-04-11

Family

ID=9766505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB387446A Expired GB621498A (en) 1946-02-07 1946-02-07 Improvements relating to pressure release or exhaust valves

Country Status (1)

Country Link
GB (1) GB621498A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484565A1 (en) * 1980-06-16 1981-12-18 Heilmeier & Weinlein HYDRAULIC CONTROL SYSTEM, ESPECIALLY OF HIGH PRESSURE, EQUIPPED FOR EXAMPLE WITH A HYDRAULIC CYLINDER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484565A1 (en) * 1980-06-16 1981-12-18 Heilmeier & Weinlein HYDRAULIC CONTROL SYSTEM, ESPECIALLY OF HIGH PRESSURE, EQUIPPED FOR EXAMPLE WITH A HYDRAULIC CYLINDER

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