Quality That Lasts.

ZXPD (DZJHP) LNG LO2 LN2 Cryogenic Pneumatic Globe Control Valve, Low Temp Range -40℃ ~ -196 °C

Nominal diameter: DN20~DN200;
Nominal pressure: PN16, PN40, PN64;
Material: stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti,etc);
Bonnet type: extended bonnet for -40℃ ~ -196 °C;
Flow characteristic:equal percentage and linear;
Suitable medium:cryogenic medium(such as LNG,LN2,LO2,etc);

The ZXPD cryogenic globe control valve consists of a pneumatic diaphragm actuator and cryogenic single seat globe valve. Cryogenic control valve is appropriate for ultra-cold applications in which the medium temperatures are between -40 ° C and -196 ° C (for example liquid nitrogen, liquid oxygen, etc.).It is different from an ordinary temperature control valve for the reason that cryogenic control valve utilizes a extended bonnet to make sure that the packing works at 70 degrees.

The Specification of Single Seat Cryogenic Globe Control Valve:

Product name: straight way single seat cryogenic control valve;
Nominal diameter: DN25~DN300;
Nominal pressure: PN16, PN40, PN64;
Flange standard: GB/T9113, JB/T79.1-94, 79.2-94, etc;
Material: stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti,etc);
Bonnet type: extended bonnet for -40℃ ~ -196 °C;
Sealing packing: V-type PTFE packing, V-type flexible graphite packing;
Flow characteristic:equal percentage and linear;
Suitable medium:cryogenic medium(such as LNG,LN2,LO2,etc);

Performance Parameter of Single Seat Cryogenic Globe Control Valve:

The Dimensions of Cryogenic Pneumatic Globe Control Valve:

 Installation instructions of cryogenic globe control valve:

1. It need to be installed vertically around the horizontal pipe. When it's essential to do the installation horizontally or obliquely under special conditions, it ought to generally be supported.

2. The cryogenic globe control valve ought to be installed near to the ground or floor, to be able to maintain and repair. For that situation using the positioner or handwheel mechanism, it's convenient for observation, adjustment and operation.

3. The bypass lines are generally set to change to manual operation once the automatic control system fails or repairs, to ensure that production isn't stopped.

4. Once the handwheel mechanism is installed, the manual operation may also be overlooked once the bypass pipe is overlooked, and it is also employed for the limit opening. Once the me is stopped, the handwheel mechanism should be restored towards the original neutral position to facilitate the standard operation from the automatic control system.

5. When installing, the flow direction from the medium ought to be in conjuction with the direction shown by the valve body.

6. Clean the pipeline and clean the welding slag before installing the cryogenic globe control valve. After installation, fully open, clean the pipeline and try out the tightness of every joint.