Standard for performance of forged steel valves
Performance standards for forged steel valves:
The forged steel valve is mainly used for cutting off or connecting the pipeline medium on the pipeline of various systems of thermal power station. Applicable medium: non-corrosive medium such as water and steam. Forged steel valves compared with other valve products are characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Due to the special performance, technical characteristics and operating conditions, the product has formed features that cannot be replaced by other products.
Main design specifications for forged steel valves
Design and manufacture GB/T12234 ASMEB16.34
Structure length JB/T3595
Interface connection size JB/T3595 GB/T12224
Inspection and testing JB/T3595 MSS SP61
Pressure and temperature reference JB/T3595 ANSI B16.34
Forged steel valves main pressure classes
Nominal pressures 200, 250, 320
Working pressure P55 100V, P55 140V, P55 170V
Forged steel valve structure advantage
1. Pressure self-tightening seal is adopted, and both ends of valve body branch pipe are welded.
2. The valve seat and the sealing surface of the valve disc are made of cobalt-based hard alloy by plasma spray welding, with good wear resistance and abrasion resistance.
3. The valve stem is treated with anti-corrosion nitriding, which has good anti-corrosion and anti-abrasion properties.
Standard for forged steel valves
General requirements for forged steel gate valves
JB/T 5263-2005 forging steel valve steel casting technical conditions
JB/T 4018 forged steel flange gate valve model preparation method
DL 959-2005 guidelines for application of safety valve for forged steel boilers
DLT 531-1994 forged steel high temperature and high pressure globe valve gate valve technical conditions
DLT 641-2005 forged steel valve electric actuator
DLT 850-2004 forged steel piping
GB 10869 forged steel globe valve technical conditions
Forged steel temperature and pressure reducing valve
Mounting gap increases due to wear of parts. Diaphragm metering pump, its design on the basis of plunger pump had greater improvements, principle of working for the electric motor to drive the piston reciprocating (note that the piston is not direct contact with the liquid), and then push the diaphragm movement, to absorb the liquid pressure after launch, because of its oil in the piston abrasion work, working environment optimization greatly, greatly improve the service life, after penetration hardening treatment of the piston is not easy to damage, plus the high polymer materials of high ground diaphragm to further improve the diaphragm pump life. Reliable operation is another advantage of the diaphragm pump, the failure rate is very low, low to the voltage requirements, low to the environment requirements, easy maintenance, maintenance costs are only about one fifth of the plunger pump. Diaphragm pump cost-effective, its excellent performance and price ratio will promote the promotion of the diaphragm pump.