GB438428A - An automatically operated valve to control the flow of air or gas - Google Patents
An automatically operated valve to control the flow of air or gasInfo
- Publication number
- GB438428A GB438428A GB1472734A GB1472734A GB438428A GB 438428 A GB438428 A GB 438428A GB 1472734 A GB1472734 A GB 1472734A GB 1472734 A GB1472734 A GB 1472734A GB 438428 A GB438428 A GB 438428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- conduit
- adjustable
- casing
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
Landscapes
- Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
438,428. Fluid - actuated valves. HARTLEY, T. W., The Old House, Seisdon, Wolverhampton and TINLEY, E. L., Three Gables, Spring Hill Park, Lower Penn, near Wolverhampton. May 16, 1934, Nos. 14727/34 and 4213/35. [Class 135] In a valve which is actuated by outlet pressure beneath a liquid-sealed bell 27 in such a way that it is opened when the resistance at a point on the delivery side of the valve increases and is closed when such resistance decreases, the skirt of the bell is disposed between two cylindrical overlapping walls 32, 33 extending from the bottom and top of a closed chamber 21 respectively. The valve is particularly applicable to the control of the air flow from a fan 43 to a furnace 44. The increased resistance offered to the air flow by the fire bed 45 due, say, to stoking causes an increased pressure in the conduit 13 and this causes the valve to open, a decreasing resistance having a reverse effect. The butterfly valve 10 is connected by a rod 18 to the bell 27 exposed to the static pressure in the conduit 13 by means of a pipe 24 closed by a plug 25 and having perforations 26. Alternatively the end of the pipe may face the fluid flow so that the full delivery pressure is used. The chamber 21, which has a removable cap 29 is secured to the valve casing 11. A dip stick 42 is provided in the space 41. This space has a manually adjustable air-venting valve. The valve is biassed towards the open position by the adjustable spring 55. When the fan is stopped, the valve reverts to the position shown in Fig. 1, but sufficient air flows between the edges of the valve and its casing to maintain a small fire. The spring 55 is arranged outside the casing 11 and is connected to the free end of a camfaced arm 48 on the valve shaft by a flexible link 54. By this arrangement the leverage is changed progressively as the valve opens in accordance with the pressure changes in the conduit 13. The arm 48 may be replaced by a straight arm carrying an adjustable weight, and having adjustable stops to limit its rotary movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1472734A GB438428A (en) | 1934-05-16 | 1934-05-16 | An automatically operated valve to control the flow of air or gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1472734A GB438428A (en) | 1934-05-16 | 1934-05-16 | An automatically operated valve to control the flow of air or gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB438428A true GB438428A (en) | 1935-11-18 |
Family
ID=10046404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1472734A Expired GB438428A (en) | 1934-05-16 | 1934-05-16 | An automatically operated valve to control the flow of air or gas |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB438428A (en) |
-
1934
- 1934-05-16 GB GB1472734A patent/GB438428A/en not_active Expired
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