Pipe supports should be provided at intervals not greater than shown in Table 10.4.3 and run along those parts of buildings and structures where appropriate supports may be mounted. Where two or more pipes are supported on a common bracket the spacing between the supports should be that for the smallest pipe.
Each blowdown pipe shall be provided with two valves or a valve and cock such valves and cocks shall be adequate for design conditions of the boiler. (5) All fittings between the boiler and blowdown valve shall be of steel or extra-heavy malleable iron.
Sliding joint. These are sometimes used because they take up little room but it is essential that the pipeline is rigidly anchored and guided in strict accordance with the manufacturers' instructions; otherwise steam pressure acting on the cross sectional area of the sleeve part of the joint tends to blow the joint apart in opposition to the forces produced by the expanding pipework (see ...
Jun 04 2003 · Deduct 10% from the Btu/hr capacity of the vent for each additional 90-degree elbow. A Category I vent system works by allowing heated flue products to rise vertically so the vent pipe must rise vertically from the boiler vent connection as soon as possible. You should also limit the length of the horizontal flue pipe.
Nov 01 2010 · Bed ash which is coarse heavy and resembles beach sand exits the boilers as glowing grains close to 500 F (260 C) and is carried away from the boilers via a 100 ft (30 m) drag-chain conveyor.
In Europe matters relating to the suitability of safety valves for steam boilers are governed by the European standard EN 12953. In the US and some other parts of the world such matters are covered by ASME standards. Many different types of safety valves are fitted to steam boiler plant but generally they must all meet the following criteria: