Self operated regulating valve

The self operated pressure regulating valve does not need additional energy and can work in the place without electricity and gas, which is convenient and energy saving. The pressure section range is fine and cross each other, and the adjustment precision is high. The pressure setting value can be set continuously during operation. The ratio of the pressure in front of the valve to that in the back of the valve can be 10:1 ~ 10:8. Rubber diaphragm type detection, the actuator has high precision and sensitive action. The pressure balance mechanism is adopted to make the control valve sensitive and accurate.
Main technical parameters
Valve body type: fine small straight through casting ball valve
Nominal diameter: DN 15-250mm
Nominal pressure: pn1.6, 2.5, 4.0, 6.4Mpa
Flange standard: ANSI, JIS, DIN, GB, JB (special can be provided by users)
Connection type: flange (ffrfrtj), welding (swbw), thread (applicable to less than 1 ″)
Valve cover type: standard type - 17 ～ + 450 ℃
Gland type: bolt compression type
Sealing packing: V-type PTFE packing, asbestos packing with PTFE impregnation, asbestos textile packing and graphite packing
Spool form: single seat, sleeve type
Flow characteristics: linear
Effective area (CM): 32 ＊ 80250630
Pressure setting range (MPA): 0.8 ~ 1.60.1 ~ 0.60.015 ~ 0.150.005 ~ 0.0350.3 ~ 1.20.05 ~ 0.30.01 ~ 0.07
Minimum pressure difference △ Pmin (MPA) for normal operation of pressure valve: ≥ 0.05 ≥ 0.04 ≥ 0.01 ≥ 0.005
Maximum allowable pressure difference between upper and lower membrane chambers (MPA): 2.01.250.40.15
Material diaphragm cover: galvanized steel plate; diaphragm: EPDM or FKM fiber
Control pipeline, joint copper pipe or steel pipe 10 × 1; ferrule joint: R1 / 4“
Note: the pressure setting range corresponding to the effective area is not applicable to dn 150-250.
Material of main parts
1 valve body wcbcf8cf8mcf3m
2. Valve seat and sleeve 3043043316l
3 spool 304304316316l
4-gasket polytetrafluoroethylene (PTFE)
5 guide sleeve 304304316l
6 bearing 304304316l
7 valve cover 304304316l
8 chassis 304304316l
9 spring 65mn304316l
10 packing polytetrafluoroethylene (PTFE) / flexible graphite
11 nut 304304316l
12 actuator 25 ? (special requirements can be customized)