Shanghai Jianggong Valve Manufacturing Co., Ltd.
Shanghai Jianggong Valve Manufacturing Co., Ltd. Industrial valve expert With safe and reliable products To provide you with thoughtful services
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WCB Flanged Self Operated Pressure Regulatng Valve For Water Steam Oil Use
Product introduction:
SZZCP series self operated pressure regulating valve does not require external energy. It uses the energy of the regulated medium as the power source to introduce the actuator to control the position of the valve core, changes the pressure difference and flow rate at both ends, and stabilizes the pressure in front (or behind) of the valve. It has the advantages of sensitive action, good sealing, and low pressure set point wave force, and is widely used in automatic control of pressure reduction and stabilization or pressure relief and stabilization for gas, liquid, and steam media.
Self operated pressure regulating valves have three structures: single seat pressure regulating valve (SZZYP), sleeve pressure regulating valve (SZZYM), and double seat pressure regulating valve (SZZYN); There are two types of actuators: diaphragm type and piston type; The types of functions including pressure regulation after the pressure reducing valve (Type B) and pressure regulation before the valve for pressure relief (Type K). The nominal pressure rating of the product includes PN16, 40, and 64; The valve body diameter range is DN20-300; There are three levels of leakage: Level II, Level IV, and Level VI; The flow characteristic is fast opening; The pressure is adjusted in stages from 15 to 2500Kpa. It can be combined as needed to meet the requirements of user working conditions.
Product technical parameter:
| Port size DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
| Rated flow coefficient(KV) | 7 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 | 1100 | 1750 | ||
| Rated stroke(mm) | 8 | 10 | 14 | 20 | 25 | 40 | 50 | 60 | 70 | ||||||
| Pressure nominal PN(Mpa) | 1.6,4.0,6.4 | ||||||||||||||
| Pressure adjustment range(MP a) | 15～50 40～80 60～100 80～140 120～180 160～220 200～260 240～300 280～350 330～400 380～450 430～500 480～560 540～620 600～700 680～800 780～900 880～1000 980～1500 1000～2500 |
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| Flow characteristics(℃) | Quick open | ||||||||||||||
| Adjusting accuracy(％) | ±5 | ||||||||||||||
| Working temperature(℃) | ≤350 | ||||||||||||||
| Allowable leakage | Hard seal(1/h) | Single seat:≤10ˉ4 valve rated capacity(IV Class)；double seat & sleeve:≤5×10ˉ3 valve rated capacity(II Class) | |||||||||||||
| Soft seal(m1/h) | 0.15 | 0.30 | 0.45 | 0.60 | 0.90 | 1.7 | 4.0 | 6.75 | 11.10 | 16.0 | |||||
| Pressure reduction ratio | Max. | 10 | |||||||||||||
| Min. | 1.25 | ||||||||||||||
Product features:
1. Self operated pressure regulating valves do not require external energy and can work in situations without electricity or gas, which is both convenient and energy-saving.
2. The pressure segmentation range is fine and intersects with each other, with high adjustment accuracy.
3. The pressure setting value can be continuously set during operation.
4. Adjust the pressure behind the valve, with a ratio of 10:1 to 10:8 between the pressure before and after the valve
5. Rubber diaphragm type detection, with high detection accuracy and sensitive action of the actuator.
6. Adopting a pressure balancing mechanism to make the regulating valve responsive and precise in control.