The parameters of the pneumatic valve forged steel gate

pneumatic valve forged steel gate ( 闸阀) Open-close part is ram, ram movement direction perpendicular to the direction of flow and the brake pneumatic valve can only be fully open and close, not to adjust and throttling. Sealing face has two gate, two of the most commonly used model of pneumatic valve gate sealing surface form a wedge, the wedge Angle vary with parameters of pneumatic valve. Pneumatic brake pneumatic valve drive way classification: manual gate valves, pneumatic valves, pneumatic brake electric brake pneumatic valve. Introduction of

pneumatic valve, forged steel gate is all made by A forging materials are collectively referred to as the pneumatic brake valve, pneumatic valve, forged steel gate forgings materials have A, F, F, L, L, etc. Often said that the domestic pneumatic valve forged steel gate is usually refers to the small diameter of pneumatic valves, forged steel gate diameter range: DN ~ DN. Pressure range: national standard PN and PN, : the Class ~, recoverable or American standard gb size production and processing, the factory are all in stock supply. Beyond the DN pneumatic valve diameter of forged steel gate must be customized, domestic demand is less.

pneumatic valve gate structure classification structure classification, there are many different ways adopted by the sealing element is the main difference between different structure forms, according to the structure of the sealing element, often the brake pneumatic valve is divided into several different types, and is the most common form of parallel brake brake solenoid pneumatic valve and deed; According to the structure of the pneumatic valve rod, also can be divided into pneumatic rising stem gate valves and pneumatic non-rising stem gate valve pneumatic valve is suitable for the Class to use forged steel gate, working temperature ℃ ~ ( Carbon steel) Or - ℃ ~ ( Stainless steel) Small diameter pipeline for truncated or on line in the medium, choose different material, can be respectively suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, and other media. In the path of the oil pipeline more application. Characteristics of

most of pneumatic valve forged steel gate is dalian type reducing design, and compared with the pneumatic valve cast steel gate diameter flow to be smaller, but the pressure and temperature range is higher than the cast steel pneumatic valve, pneumatic valve sealing performance than cast steel gate is better, longer life, medium flow direction as well as other brake pneumatic valve is not restricted.

installation points, installation position and height, import and export direction must comply with the design requirements, the connection should be firmly connected.
all kinds of manual, installation on the thermal insulation pipe, pneumatic valve handle shall not down.
a visual inspection must be conducted before installation, pneumatic valve, pneumatic valve nameplate shall comply with the current national standard 'general pneumatic valve symbol' GB regulation. Pressure is greater than for the job. MPa and pneumatic valve with the function of cutting on ZhuGanGuan, strength and strict performance test should be done before the installation, qualified rear must use. Strength test, the test pressure for the nominal pressure. Times, duration of not less than min, pneumatic valve shell, packing should be no leakage as qualified. Leak test, the test pressure for the nominal pressure. Times; The duration of the test pressure in the test should conform to the requirements of the GB standard, qualified for damper seal face no leakage. Pneumatic valve executive standard
forged steel gate design specification: JB/T, the structure of the API
length: JB/T, factory specifications/thread:
socket JB/T/GB, ANSI B. / B。
the test and inspection: JB/T, API
- pressure Temperature: GB, ANSI B/T.
product identification: GB/T, MSS SP
supply specification: JB/T
I domestic each big manufacturer production standard is different also. Pneumatic valve forged steel gate often ignore the pressure problem. In greasing operation, on the pressure gauge half free ball float steam hydrophobic pneumatic valve to a peak valley variation law. Pressure is too low, pneumatic valve seal leakage or security failure, pressure is too high, on the relief valve manufacturing jams, sealed inside lipid hardening or seal and pneumatic ball valve, pneumatic valve plate lock. Usually fat injection pressure too low, injecting grease into the pneumatic valve at the bottom of the cavity, more commonly occur in small brake pneumatic valve. And grease injection flow control pneumatic valve pressure is too high, on the one hand, pneumatic valve check check insulation gate on the mouth, so fat remote-controlled floating ball pneumatic valve hole blocking. at affection springs closed a wrench and all type of be replaced; The plunger as pneumatic valve is lipid hardening on the one hand, to use cleaning fluids, repeated failure sealing grease of softening, and inject new replacement grease. In addition, sealing type and sealing material, also influence on the pressure, different seal forms have different fat injection pressure, usually hard seal fat injection pressure is higher than the soft seal.