GB594357A - Improvements in or relating to valves - Google Patents
Improvements in or relating to valvesInfo
- Publication number
- GB594357A GB594357A GB396645A GB396645A GB594357A GB 594357 A GB594357 A GB 594357A GB 396645 A GB396645 A GB 396645A GB 396645 A GB396645 A GB 396645A GB 594357 A GB594357 A GB 594357A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- valve
- piston
- heater
- pressure
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
594,357. Feedwater heating systems. CAIRD & RAYNER, Ltd., and REDDICK, R. F. Feb. 16, 1945, No. 3966. [Class 64 (i)] [Also in Group XXIX] A steam-heated boiler feedwater heater 16, Fig. 1, is provided with means whereby the water is by-passed through a pipe 25 in the event of a leak developing in any of the heater tubes 30. A valve 1 in the inlet 4 to the heater is connected to a piston 2a having a small orifice 3 whereby the pressure on either side of the piston is equalised, so that the valve is opened by the pressure of incoming water. A pipe 6 connects a chamber 5 below the piston with a floatoperated valve 17 which normally closes the pipe 6 but which connects it with a vent 19 on the accumulation of water in a chamber 15 connected to the steam side of the heater. When the pipe 6 is thus vented, the pressure below the piston 2a falls and the valve 1 closes, whereupon the water flows through the by-pass 25, opening a spring- loaded valve 27 and closing a non-return valve 23 in the heater outlet. The pipe 6 may also be vented by a hand-operated valve 22. In order to prevent the valve 1 from reopening when the water in the chamber 15 is dispersed, a differential piston valve 8, Fig. 2, is connected at 7 to the pipe 6 and at 11 to the inlet 4 of the heater, so that upon the. reduction of pressure in the pipe 6 when this is vented, the piston 9 is moved to the left by the pressure in the pipe 11 to place the pipe 7 in communication with a vent 13 until the piston is reset by a screwed spindle 29.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB594357A true GB594357A (en) | 1947-11-10 |
Family
ID=1627870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB396645A Expired GB594357A (en) | 1945-02-16 | Improvements in or relating to valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB594357A (en) |
-
1945
- 1945-02-16 GB GB396645A patent/GB594357A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB706674A (en) | Improvements in or relating to excess flow valves | |
| US1923127A (en) | Relief valve | |
| GB594357A (en) | Improvements in or relating to valves | |
| GB709358A (en) | Fluid flow and pressure control valve | |
| GB248529A (en) | Improvements relating to valves for use in fluid pressure transmission systems | |
| GB1009276A (en) | Improvements relating to coupling devices for pipes or conduits | |
| GB865419A (en) | Improvements in or relating to hydraulic safety valves | |
| GB704235A (en) | Improvements in or relating to a mixing valve for separate fluids at different temperatures | |
| GB1159463A (en) | Improvements in or relating to Pressure Reducing and Desuperheating Valves | |
| US2168254A (en) | Valve | |
| GB616703A (en) | Improvements in automatic valves for liquid pressure-transmission systems | |
| GB193191A (en) | Improvements in relief valves | |
| GB734832A (en) | Improvements in or relating to temperature or pressure controlled valves for controlling the flow of fluids | |
| GB226728A (en) | Improvements relating to safety valves | |
| GB893102A (en) | System for controlling the flow of byepass liquid from a centrifugal pump | |
| GB638245A (en) | Improvements in or relating to steam supply control means for steamheated heat exchangers | |
| GB846033A (en) | Safety-valve | |
| GB461002A (en) | Improvements in or relating to closed heating systems employing a circulating heating liquid | |
| GB690570A (en) | Improvements relating to cut-off valves for use with fluid mixing valves | |
| GB333996A (en) | Improvements in or relating to the control of plunger valves | |
| GB367316A (en) | Improvements in and relating to automatic controlling devices for gas-heated liquid heaters | |
| GB188608A (en) | Improvements in automatic bye-pass apparatus for fluids | |
| GB281156A (en) | Improvements relating to valves for feed water supply to steam generators or the like | |
| GB305705A (en) | Improvements in and connected with steam or other gaseous fluid supply or controlling valves or valvular apparatus | |
| GB601084A (en) | Improvements in or relating to gas-fired water heaters |