Except for the safety valve and blow down valve used for steam boiler
and hot water boiler water supply system, cut-off valve, gate valve, check valve, relief valve and throttle valve are also used for boiler. During industrial gas boiler operation, the boiler fireman can control and adjust the steam and water system by operating the valves.
Common failures of industrial gas fired boiler
valve are listed as follows:
1.Valve leakage, the reasons as show as follows:
(1) the joint surfaces of the valve plug and the valve seat are corroded, worn, scratched or attached with foul;
(2) the packing is not fully pressed, not uniform or has been deteriorated;
(3) the gasket has not been pressed, not uniform or has been deteriorated;
(4) the tightness degree is not the same causing the valve body and the valve cover platen is not tight.
2. The valve rod is not flexible. The reasons are shown as follows:
(1)packing is pressed too much and too tight;
(2) the screw on the valve rod and valve cover is damaged;
(3) valve rod is bent, deformed or stuck due to corrosion;
(4) hand wheel damages, can not drive the valve rod;
(5) valve plate is stuck.
3. Valve body breaks, the reason are shown as follows:
(1) the material is poor, there are sand hole, air pores inside the industrial gas steam boiler
valve or eccentric occurs during casting, decreasing the partial strength;
(2) small cracks occur due to the collision of valve, and the crack is expanded due to continuous operation;
(3) screw damages due to strong force, the screw hole has been damaged and not found;
(4) water inside the valve body freezing causes valve crack;
(5)strong installation of cast iron valve, crack occurs due to uneven force.
Henan Huatai Petrochemical Co.,Ltd has established a strict international quality control system from material procurement to each link of technological process guarantee product qualified rate remains at 100%. Since establishment, HTS Boiler
arouses its all efforts to make the enterprise prosperous. Internally, HTS Boiler adheres to the scientific innovation and strict management; externally, enhance the service consciousness constantly, improve service quality persistently, rely on specialized production and advanced equipment to meet continuous increasing customers’ demand.
HTS boiler is mainly engaged in manufacturing condensing oil/ gas fired boiler, low NOx oil/ gas fired boiler
, thermal oil boiler, further information, please visit: www.htsboiler.com