3" DN80 Pneumatic Diaphragm Globe Shut-off Valve

Hot sale 3 inch pneumatic globe valve! Suitable for gases and liquids, flange connection, with pneumatic membrane actuator, DC24V solenoid valve, limit switch and air filtering pressure reducing valve. The pneumatic valve can accept the signal from the regulating instrument to realize the automatic control of parameters such as pressure, flow, temperature or liquid level. High performance ensures reliable operation of industrial processes.

SKU: CCHN-PGV-DN80

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Delivery date: 6-25 days

Overview

Note: This globe valve cannot be used for drinking water.

High-precision 3-inch pneumatic membrane shut-off valve, the valve body structure is single-seated, packing seal sealing form, the pressure class is PN16, nominal diameter range DN80mm, applicable fluid temperature from -60 ~ 450 ℃. Leakage level Ⅵ, flow characteristics for fast open. Balanced valve inner parts, improve the permissible differential pressure of the globe valve.

Specification

Model	CCHN-810D-1S2A-4DK41-DN80
Pipe Diameter	3" DN80
Nominal Pressure	PN16 MPa
Rated Flow Coefficient	120 KV
Rated Stroke	20 mm
Film Effective Area	400 cm²
Allowable Pressure Difference	Positive Action: 0.99
Allowable Pressure Difference	Opposite Reaction: 1.32
Signal Pressure	0 or 250
Allowable Leakage	Hard Seal: General: 10^-4 × valve rated capacity; Tight type: single-seat: 1.2 × 10^-7
Allowable Leakage	Soft Seal: Class VI
Operating Temperature	≤ 250℃
Connection Method	Flangeless
Medium of Use	Gas and Liquid
Valve Body Material	304
Bonnet Type	Standard type (-17 ~ +250℃)
Cover Type	Screw compression type
Sealing Material	V-shaped PTFE packing, reinforced PTFE packing, graphite braided packing, flexible graphite
Valve Core Type	Single-seat spool
Flow Characteristics	Quick opening characteristic
Included Accessories	Pneumatic diaphragm actuator, DC24V solenoid valve, limit switch, and air filter regulator.

Dimension (Unit: mm)

Pneumatic globe valve dimension

DN	A	L	H	H1	H4
80	340	298	100	221	400

Application

Pneumatic globe valve application

Tips: What Should I Do If My Pneumatic Globe Valve Suddenly Doesn't Work?

Pneumatic globe valve suddenly not working can be caused by a variety of reasons. First, check if the air supply is normal and make sure the pneumatic actuator gets enough air pressure. Check whether the air supply connection, pressure regulator and other parts are working properly. Second, check whether the connection between the valve body and the valve cover is tight to prevent air leakage.

If the above is normal, check whether the pneumatic globe valve spool is contaminated or stuck, you can clean the spool and its surrounding. At the same time, check the control system to ensure that the signal transmission is normal. If the problem remains unresolved, it is recommended to seek professional maintenance personnel for overhaul, which may require more in-depth maintenance and troubleshooting to ensure the normal operation of the pneumatic shut-off valve.