Imported stainless steel gas pressure reducing valve I. Overview of imported stainless steel gas pressure reducing valve products Brand: US Ouke OKE Stainless steel gas pressure reducing valve (Stainless steel gas pressure reducing valve), also known as stainless steel gas pressure regulating valve, means that the valve body is made of stainless steel 304 or 316, which has the functions of acid and alkali resistance, corrosion resistance and rust resistance. Gas material, has better strength and toughness, is used in various gas media, adjusts the outlet pressure by adjusting the spring pressure, uses the diaphragm to sense the outlet pressure change, and drives the piston through the pilot valve to adjust the throttle portion of the main valve. The size of the flow area realizes the pressure reduction and voltage regulation function of the gas. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of decompression. Then, relying on the adjustment of the control and regulation system, the fluctuation of the post-valve pressure is balanced with the spring force, so that the post-valve pressure remains constant within a certain error range.
Second, the characteristics of imported stainless steel gas pressure reducing valve 1. Pipe medium for compressed air. 2. It belongs to the pilot piston type pressure reducing valve. It consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of a valve seat, a main valve disc, a piston, a spring and the like. The pilot valve is mainly composed of a valve seat, a valve disc, a diaphragm, a spring, an adjustment spring and the like. Control is precise. 3. Adjust the outlet pressure by adjusting the spring pressure, and use the diaphragm to sense the outlet pressure change. The pilot valve is opened and closed by the pilot valve to adjust the overflow area of ??the throttle portion of the main valve to realize the pressure reduction and voltage stabilization function. Keeping the outlet listening pressure and temperature within a certain range when the import pressure is constantly changing
Third, imported stainless steel gas pressure reducing valve Technical parameters and performance Nominal pressure (Mpa) 1.6 2.5 4.0 6.4 10.0 16.0 Shell test pressure (Mpa)* 2.4 3.75 6.0 9.6 15.0 24 Seal test pressure (Mpa) 1.6 2.5 4.0 6.4 10.0 16.0 Maximum import pressure (Mpa) 1.6 2.5 4.0 6.4 10.0 16.0 Outlet pressure range (Mpa) 0.1-1.0 0.1-1.6 0.1-2.5 0.5-3.5 0.5-3.5 0.5-4.5 Pressure characteristic deviation (Mpa) △ P2P ANSI 2365, GB12246-1989 Flow characteristic deviation (Mpa) P2G ANSI3568, GB12246-1989 Minimum differential pressure (Mpa) 0.15 0.15 0.2 0.4 0.8 1.0 Leakage X/F (polytetrafluoroethylene/rubber): O leakage Y (hard seal): according to ANSI 6863
5. Imported stainless steel gas pressure reducing valve Main parts and materials Part Name Part Material Body bonnet bottom cover WCB/FCB* Seat valve disc 2Cr13/304* Cylinder liner 2Cr13/25 (hard chrome plating)/304* Piston 2Cr13/copper alloy/copper alloy* Piston ring alloy cast iron / para-polyphenyl * Guide valve seat Guide valve stem 2Cr13/304* Diaphragm 1Cr18Ni9Ti Main valve pilot valve spring 50CrVA Adjustment spring 60Si2Mn Seal (X/F/Y) Rubber / Polytetrafluoroethylene / Hard Alloy Pilot valve body Guide valve cover 25/304*
Sixth, imported stainless steel gas pressure reducing valve installation instructions 1. The gas pressure reducing valve must be installed in strict accordance with the direction of the arrow on the valve body and the direction of fluid flow. If the gas is not clean and contains some impurities, the filter must be installed at the upstream inlet of the pressure reducing valve (we recommend a filtration accuracy of not less than 0.5mm). 2. For ease of operation and maintenance, the gas pressure reducing valve is generally installed upright on a horizontal pipe. 3. In order to prevent pressure overpressure after the gas pressure reducing valve, a pressure reducing valve should be installed at not less than 4M from the valve outlet. 4. The pressure reducing valve must be equipped with a shut-off valve before and after the valve, and the switch gas should be used for replacement or maintenance. 5. If the gas has condensed water, it needs to be equipped with a steam separator to prevent the condensate from damaging the piston or diaphragm of the pressure reducing valve.
Seven, the performance of imported stainless steel gas pressure reducing valve Royal Dutch Shell Oil Company, Siemens AG, Guangdong Huanan Special Gas Research Institute Co., Ltd., General Electric Company, Beijing Sangqi Experimental Instrument Research Institute Hangzhou Tongyi Gas Research Institute, Harbin Institute of Technology, Jiangsu Tianrui Instrument Co., Ltd. Changsha Kaiyuan Instrument Co., Ltd., BYD Co., Ltd., Texas Instruments, Valero Energy, Huizhou Fangzhou Industrial Gas Co., Ltd., Jiangsu Tongguang Petrochemical Industrial Gas Co., Ltd., Hangzhou Santai Industrial Gas Equipment Co., Ltd.