Pneumatic globe valves

Product: pneumatic globe valves

Introduction

Pneumatic globe valve is an important actuation device in industrial automation control system, which can be controlled remotely and can meet the needs of computer program control in all sectors, including petrochemical industry, gas equipment, nuclear industry, power equipment, environmental protection water treatment, HVAC, Iron and steel metallurgy, brewing equipment, drying equipment, vacuum equipment, surface treatment, biopharmaceuticals, food machinery, textile printing, papermaking and other industries.

Features :

1. Simple structure, easy manufacture and maintenance;

2. The medium used in the cylinder is compressed air or nitrogen, which is safe and environmentally friendly;

3.  Cylinder uses the intake chamber or the lower chamber inlet to control valves remotely;

4. Short working stroke and short opening and closing time;

5. The sealing surface of the closing body (valve) and the valve seat adopts a conical seal, which has a small closing force, is resistant to scouring, and has a reliable seal;

6. The valve seat can be a replaceable valve seat, which can be arbitrarily combined and matched with the sealing surface material of the closing member to meet the requirements of working conditions and extend the service life.

Working principle

The pneumatic globe valve use compressed air as the power source for remote control. The main control room manually or automatically triggers the action command to activate the intake and exhaust solenoid valves to supply and discharge compressed air into the actuator. Compressed air acting on the piston to overcome the spring force and friction on the operation of the valve stem, such that pressure (p in loss of gas valve open) or lifted (off valves for gas loss) stem to drive the valve body move up and down, Open or close the valve.

When the valve loses air and there is no compressed air in the drive head, the valve will be in a fully open or fully closed safe position as required by the system. Compressed air for power plant instrumentation, the supply pressure is generally 4 ~ 9bar , before entering the valve, the compressed air is first filtered and purified through the filter, and then decompressed through the pressure reducing valve, the inlet pressure gauge reading does not exceed 4bar . Pressure adjustment can be achieved by adjusting the adjustment screw installed on the top of the pressure reducing valve. Before adjusting, loosen the protective cover.

Product parts and materials:

Serial number	name	Material
		Carbon steel	Stainless steel
1	Valve body	A216-WCB	A351-CF8
2	Gasket	Flexible graphite + stainless steel	PTFE
3	bolt	A193-B7	A276-304
4	Disc	A216-WCB + surfacing 304 or stellite , PTFE	A351-CF8 PTFE
5	Split ring	A182-F304	A276-304
6	Disc cover	A182-F304	A276-304
7	Stem	A276-410	A276-304
8	Nut	A194-2H	A276-304
9	Eyebolt	A192-2H	A276-304
10	cap	A216-WCB	A351-CF8
11	bolt	A194-2H	A276-304
12	Gasket	A194-2H	A276-304
13	Packing	Flexible graphite	PTFE
14	Gland	A216-WCB	A351-CF8
15	Nut	A194-2H	A276-304

Specification

Valve Size	DN40-DN450 , 1 1/2 '' -18''
Valve Pressure	PN 0.6 Mpa – 10.0 Mpa, Class 150 – class 600
Air Supply	2.5 bars -8 bars, Max 10 bars
Cylinder Stroke	90mm-1030mm
Function	On-off, quick opening and closing, emergency shut-down , flow regulation
Suitable media	Water, oil, gas, air, particles, etc
Working temperature	-40 ℃ to 450 ℃
Ambient temperature	-20°C to 90°C
Optional accessories	solenoid valve, positioner, limit switch, filter, regulator, lubricator, etc

FAQ:

1.    Q: Do you have any certification for Pneumatic globe valvess?

A: Yes, it is certified by ISO 9001 and SIL Level 3.

2.    Q: Can I get one free sample to try in my market?

A: Sorry, such sample should be charged firstly but can be returned after the regular orders .

3,  Q: Can you customize our design and logo for Pneumatic globe valves?

A: Yes, we can do ODM and OEM for all customers.

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