G641j Pneumatic Diaphragm Valve

• Media: Water
• Temperature: High Temperature
• Actuator: Electric
• Connection: Flanged Diaphragm Valve
• Material: Cast Steel
• Structure: Roof Type Diaphragm Valve
• Model NO.: G641J
• Pressure: High Temperature
• Flow Direction: Reversing
• Function: Solenoid Valve, Electronic Type, Intelligent Type, Field Bus
• Usage: Safety, Drain, Temperature Control, Flow Control
• Standard: DIN, GB, ANSI, BSW, JIS
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

  G641J pneumatic diaphragm valve
Structural features
1, the diaphragm made of rubber seal, good sealing.
2, limited by diaphragm material, diaphragm valve is suitable for low pressure and temperature is relatively not high occasions.
3, diaphragm valve according to the structural form can be divided into: house type, direct flow, cut-off, straight through, gate type and right Angle type six; The connection form is usually flange connection; According to the driving mode can be divided into manual, electric and pneumatic three, of which the pneumatic drive is divided into normally open, normally closed and reciprocating three.
4. Generally not suitable for temperature higher than 60 degrees and transport of organic solvents and strong oxidizing media in the pipeline, it is not appropriate to use pneumatic diaphragm valve in the pipeline of higher pressure.
Air drive: compressed air 4-6bar
Nominal pass through: 15-200mm
Nominal pressure :1.0Mpa
Operating temperature :-10ºC ~ 60ºC
Connection method: flange
Body material: cast iron, cast steel
Diaphragm material :PTFE, EPDM
Applicable medium: various water treatment
Actuator: Aluminum alloy
Installation direction: any Angle
 
   

Technical parameters

The pneumatic diaphragm valve is composed of two parts: diaphragm valve and pneumatic actuator. It is powered by compressed air and regulates the flow of fluid medium in the process pipeline.
Due to the structure of the valve body with corrosion resistance lining and corrosion resistance diaphragm, no stuffing box structure, throttling element for elastic diaphragm, valve body flow smooth, so the pneumatic diaphragm valve has a small negative force, large flow, no leakage and convenient and reliable, fire and explosion proof advantages, Widely used in industrial automation system in the strong acid, strong alkali, strong corrosion, high viscosity, containing glume, with fiber and toxic and not allowed pollution of the medium flow regulation.
The closing and opening of the diaphragm valve is achieved by applying pressure from the pipeline to strengthen the rubber diaphragm. When the pressure medium enters the valve control chamber, the diaphragm presses down and closes the valve channel. When the control chamber pressure is discharged to the atmosphere or the downstream pipeline, the diaphragm rises and the valve channel is opened. The valve has no stem, gasket, directional seat, etc., the only part of the movement in the channel is the diaphragm, so there is no rust and locking phenomenon, with higher stability. A variety of structural forms and control forms, can be applied to a variety of fluid control needs.
 

Air drive	Compressed air 4-6bar
Nominal menstruating	15-200mm
Nominal pressure	1.0 Mpa
Temperature for use	-10ºC ~ 60ºC
Connection method	Flange
Valve body material	Cast iron, cast steel
Diaphragm material	PTFE, EPDM
Applicable media	Various water treatments
Actuators	Aluminum alloy
Mounting direction	Any Angle
Optional accessories	Limit switch, positioner, solenoid valve, pressure reducing valve

 

 

Nominal diameter (DN)	H1 (high)	Overall dimension
		D1 (outside diameter of flange)	D (middle diameter of flange hole)	L (body length)	n (number of flange holes)	C (screw hole size)	B (flange thickness)
15	125	65	95	125	4	14	14
20	130	75	105	135	4	14	16
25	145	85	115	145	4	14	16
32	180	100	135	160	4	18	16
40	220	110	145	180	4	18	16
50	250	125	160	210	4	18	18
65	280	145	180	250	4	18	22
80	340	160	195	300	4	18	25
100	370	180	215	350	8	18	25
125	420	210	245	400	8	18	30
150	480	240	280	460	8	23	30
200	625	295	335	570	8	23	35