The PD series pneumatic low-temperature regulating valve, manufactured by the company, is characterized by an S-streamline flow channel, minimal pressure drop loss, high flow capacity, precise flow characteristics, and easy maintenance. It is a derivative of a single-seat regulating valve with the distinction of utilizing a long-neck type upper valve cover for packing to function at normal temperature. Specifically designed for adjusting media (such as liquid oxygen and liquid nitrogen) in ultra-low temperature conditions ranging from -60 to -196℃. To ensure adjustment accuracy, an electric valve positioner must be employed. This product finds extensive application in petroleum, chemical, pharmaceutical, and air separation industries.
【Product Attributes】
Nominal Diameter
DN15~DN200
Nominal Pressure
PN1.0~PN2.5 Class150
Applicable Temperature
-196℃~200℃
Connection Type
Flange Welded
Body Material
CF8 CF8M CF3M LF4 LF2
Trim Material
304 304+STL 316 316+STL 316L 316L+STL
Leakage Class
Hard Seal ClassIV ClassV Soft Seal ClassVI (ANSIB16.104)
Film Actuator
PZM200 PZM280 PZM400 PZM600 PZM1000 PZM1600
Spring Range and Air Source
40~200KPa ( Air Source 0.25MPa) 80~240KPa ( Air Source 0.3MPa)
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