Product Name | China Pneumatic Bellows Control Valve |
Nominal Diameter | DN15 ~ DN300 |
Nominal Pressure | PN16/25/40/63/100 |
Operating Temperature | -45℃~ 350℃ |
Valve Body Material | Cast steel, chromium-molybdenum steel, stainless steel |
Flow Characteristics | Equal percentage, linear, quick-opening |
The Foxboro SRD960/SRD991/SRD998 series intelligent electro-pneumatic valve positioners are precision control devices designed for industrial automation, specifically tailored for China's pneumatic bellows-sealed control valves. These smart valve controllers integrate HART communication protocols and advanced diagnostics, supporting both single/double-acting pneumatic actuators.
With ATEX/IECEx explosion-proof certification, they deliver accurate valve stroke control (8-260mm) and angular adjustment (up to 120°), making them ideal for demanding environments in petrochemical, power, and metallurgical industries.
Parameter | SRD960 | SRD991 | SRD998 |
---|---|---|---|
Input Signal | 4-20mA + HART | 4-20mA + HART/Profibus | 4-20mA + HART 7 |
Output Pressure | 0.2-6 bar | 0.1-6 bar | 0.1-10 bar |
Stroke Range | 8-260mm | 8-260mm | 8-260mm (350mm extended) |
Protection Class | IP65 | IP65 | IP66 |
Communication | Infrared (optional) | Infrared + RS485 | Infrared + USB |
Explosion-Proof | Ex d/Ex ia | Ex d | ATEX/IECEx/NEPSI |