ES434051A1 - Pilot-controlled pressure relief valves - Google Patents
Pilot-controlled pressure relief valvesInfo
- Publication number
- ES434051A1 ES434051A1 ES434051A ES434051A ES434051A1 ES 434051 A1 ES434051 A1 ES 434051A1 ES 434051 A ES434051 A ES 434051A ES 434051 A ES434051 A ES 434051A ES 434051 A1 ES434051 A1 ES 434051A1
- Authority
- ES
- Spain
- Prior art keywords
- piston
- recoil
- connection
- stepped
- communicates
- 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
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- F16K17/105—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve using choking or throttling means to control the fluid operation of 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
- F16K31/3835—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston the discharge being effected through the piston and being blockable by a mechanically-actuated member making contact with the piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
Improvements introduced in pressure-limiting valves with prior control, characterized by comprising a constructive arrangement consisting of a piston, which acts as a pressure balance, located inside a body casing with the possibility of axial longitudinal displacement in it, which it is provided with an inlet connection and a recoil connection that communicates with the front part of the piston, there being as a retention and recovery element a compression spring that constantly opposes the recoil of a stepped pre-control valve accompanied by a second stepped piston with a throttle bore that communicates the inlet with the spring chamber, which predetermines that both the front surfaces of the valve piston and the two front surfaces of the step piston are under the same pressure, along with the differential surface, you run laying on the front faces of said stepped piston, it is in connection with the recoil through a transverse bore provided in the valve piston itself. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742403007 DE2403007C2 (en) | 1974-01-23 | 1974-01-23 | Pilot operated pressure relief valve |
DE2500537A DE2500537C2 (en) | 1975-01-08 | 1975-01-08 | Pilot operated pressure relief valve |
DE2500480A DE2500480C2 (en) | 1975-01-08 | 1975-01-08 | Pilot operated pressure relief valve |
Publications (1)
Publication Number | Publication Date |
---|---|
ES434051A1 true ES434051A1 (en) | 1977-02-16 |
Family
ID=27185737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES434051A Expired ES434051A1 (en) | 1974-01-23 | 1975-01-22 | Pilot-controlled pressure relief valves |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5920911B2 (en) |
BG (1) | BG29576A3 (en) |
DK (1) | DK155548C (en) |
ES (1) | ES434051A1 (en) |
FR (1) | FR2258579B1 (en) |
GB (1) | GB1466022A (en) |
IT (1) | IT1026433B (en) |
PL (1) | PL108692B1 (en) |
RO (1) | RO64385A (en) |
SE (1) | SE406800B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0750612Y2 (en) * | 1989-03-16 | 1995-11-15 | 株式会社小松製作所 | Pressure control valve |
EP1422456A1 (en) * | 2002-11-19 | 2004-05-26 | HydraForce, Inc. | Self-cleaning filter |
CN108488395B (en) * | 2018-05-30 | 2024-04-02 | 中国重型机械研究院股份公司 | Stepped flow type injection valve controlled by multistage pressure |
-
1975
- 1975-01-20 SE SE7500585A patent/SE406800B/en not_active IP Right Cessation
- 1975-01-22 ES ES434051A patent/ES434051A1/en not_active Expired
- 1975-01-22 DK DK18175A patent/DK155548C/en not_active IP Right Cessation
- 1975-01-22 IT IT4780375A patent/IT1026433B/en active
- 1975-01-22 FR FR7501898A patent/FR2258579B1/fr not_active Expired
- 1975-01-23 GB GB296975A patent/GB1466022A/en not_active Expired
- 1975-01-23 PL PL17750675A patent/PL108692B1/en unknown
- 1975-01-23 JP JP50010139A patent/JPS5920911B2/en not_active Expired
- 1975-01-23 RO RO8120475A patent/RO64385A/en unknown
- 1975-01-23 BG BG7528795A patent/BG29576A3/en unknown
Also Published As
Publication number | Publication date |
---|---|
IT1026433B (en) | 1978-09-20 |
GB1466022A (en) | 1977-03-02 |
DK155548C (en) | 1989-09-11 |
JPS5920911B2 (en) | 1984-05-16 |
FR2258579A1 (en) | 1975-08-18 |
DK18175A (en) | 1975-10-27 |
DK155548B (en) | 1989-04-17 |
SE7500585L (en) | 1975-08-20 |
JPS50124221A (en) | 1975-09-30 |
RO64385A (en) | 1979-07-15 |
FR2258579B1 (en) | 1982-02-19 |
SE406800B (en) | 1979-02-26 |
BG29576A3 (en) | 1980-12-12 |
PL108692B1 (en) | 1980-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970619 |