Product Code : VF--ZCC-A13-CU
Micro-opening safety valve with wrench spring
Product caliber: DN20 ~ DN300
Product pressure: 0.6 ~ 10.0MPa
Manufacturing standards: China GB, JB, HG, API, ANSI, DIN, JIS, JPI, BS production. Body material: copper, cast iron, cast steel, carbon steel, WCB, WC6, WC9, 20#, 25#, forged steel, A105, F11, F22, stainless steel, 304, 304L, 316, 316L, chromium molybdenum steel, low temperature steel, titanium alloy steel, etc. Working pressure 1.0Mpa-50.0Mpa. Operating temperature: -196℃-650℃. Connection method: internal thread, external thread, flange, welding, butt welding, socket welding, sleeve, clamp. Driving mode: manual, pneumatic, hydraulic, electric
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spring micro-open safety valve with wrench is a kind of overpressure protection device, mainly used to control the pressure in equipment and pipelines, to prevent system overpressure. Its basic structure and working principle are as follows:
Structural characteristics
spring micro-opening structure : the safety valve has the characteristics of simple structure, good sealing performance, accurate opening pressure, large discharge capacity, small return pressure difference, convenient adjustment
nozzle type valve seat : the valve seat is a vall nozzle type, steam flowing through the valve seat outlet to reach the speed of sound, large emission coefficient, sealing surface of the valve seat surfacing cobalt chromium tungsten carbide, wear resistance and erosion resistance, long life
thermoelastic valve disc : the design of the valve disc is of thermoelastic structure, and its small deformation under medium pressure is used to improve the sealing ability and overcome the forward leakage phenomenon of the safety valve near the setting pressure under medium pressure. The disc sealing surface adopts advanced laser quenching technology to improve the hardness, wear resistance and impact
Adjusting nut and back pressure adjusting sleeve : By adjusting the adjusting nut, the spring compression can be adjusted, so that the valve can quickly obtain the accurate setting pressure. The back pressure adjusting sleeve is used to adjust the disc back pressure to obtain the appropriate return differential pressure
Working principle
When the pressure in the pipeline or equipment exceeds the set value, the spring of the spring-open safety valve is compressed, the disc is lifted, and the medium is discharged from the seat, thereby reducing the system pressure. When the pressure drops below the set value, the spring returns to its original state, the valve disc is closed again, and the system pressure returns to normal. Setting pressure and return pressure difference can be easily adjusted by adjusting nut and back pressure adjusting sleeve
Application scenario
Micro-opening safety valves with wrench springs are widely used in a variety of equipment and piping systems requiring overpressure protection, including but not limited to:
pressure pipe : used to control the fluid pressure in the pipe to prevent overpressure.
Container equipment : such as storage tanks, reactors, etc., ensure that the equipment operates within the normal working pressure range.
Industrial systems : Ensure the safe control of fluid pressure in various industrial piping systems
Packing of Standard Packing:
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 442 gallon liquid totes Special package is available on request. ATTs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
