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Pneumatic Diaphragm Valve (GEMU)

Price:	Negotiable/Piece
Trade Terms:	FOB,CIF,DAP
Min Order:	10/Piece
Pay Type:	L/C,T/T,D/P

Contact Supplier

Zhejiang Zhongte Pneumatic Valve Whole Set Co., Ltd.

Showroom Product Company Profile

Pneumatic diaphragm valve
Dual role of the valve cylinder, the use of superior or inferior into the air intake valve to remote control the valve, easy to operate. The medium in the cylinder: Compressed air, nitrogen. Simple structure, easy manufacturing and maintenance; Work trips in small, short headstock; The closure body (valve) and the use conical valve seat sealing surface sealing, the closure of our small, erosion-resistant, reliable sealing. For the replacement of seat-type valve seat, can be any combination of on and off pieces of the matching sealing surface materials to meet the conditions, good using method can extend the service life.
Specification standard

Remarks:
Pneumatic diaphragm valve
1. P stands for valves positioner; R— Pressure servomotor.
2. The allowable pressure deviation is P2=0: The valve is on turning off situation, P reaches the highest level.
3. If the maximum pressure is more than 1.0Mpa, we advice to weld hard or other suitable materials as the tapon and seat surface.
Enclosed sectors
Positioner, Gear Box, air filter and pressure reducers
Outside dimension

Note for Order-offering:
Pneumatic diaphragm valve
If you would like to purchase our products, please kindly fullfill the Specification note form or please note the following information:
1, type of the purchased product
2, Pressure
3, dimension, fixed flow capacity KV
4, signal pressure, range of springs
5, index of the flow
6, turn-on and turn-offer methods of the needed valves
7, the temperature range of the media
8, materials of the valve body and valve core
9, note wether there is enclosed sectors and please state clealy the specification
10, nay other special characteristics

DN mm

20 25

100

150

200

Dimension of the seat mm

100

125

150

200

Fixed flow capacity
Kv

Straight line

1.8

2.8

4.4

6.9

17.6

27.5

110

176

275

440

690

Percentage

1.6

2.5

6.3

100

160

250

400

630

PN Mpa

0.6

1.6

4.0

6.4

Travel mm

Flow characteristcs

Straight line percentage

Terperature of the meidaº C

-15~200(normal temperature )-40~+250\40~4509(middle range temperature)

Size of flanges

Casting iron flanges dimension according to JB78, casting steel flanges dimension according to JB79

Flanges type

Flange sealing surface according to JB77: casting iron is flat ones and casting steel in rised face.

Body material

PN
Mpa

0.6, 1.6

HT200

4.0, 6.4

WCB(ZG230~450)\ZG1Cr18Ni9Ti\ZG0Cr18Ni12Mo2Ti

Trim material

1Cr18Ni9Ti\0Cr18Ni12Mo2Ti

Upper bonnet type

Normal(normal temperature)heating type (middle range temperature)

Adjustable range R

50: 1

Connection of the air origin

M16× 1.5

Type	ZHA (B)-22	ZHA(B)-23	ZHA(B)-34	ZHA(B)-45
Effective area cm	350	350	560	900
Travel mm	16	25	40	60
Range of the spring Kpa	20 ~100(standard); 40~200; 80~240; 20~60; 60~100

Item

Index rate

Item

Index rate

Basic deviation %

Without positioner

± 5.0

Air-driven turn-off	Without positioner	Start pint	± 5.0
		End point	± 2.5
	With a positioner	Start pint	± 1.0
		End point	± 1.0
Air-driven turn-on	Without positioner	Start pint	± 2.5
		End point	± 5.0
	With a positioner	Start pint	± 1.0
		End point	± 1.0

With a positioner

± 1.0

Return deviation %

Without positioner

≤ 3.0

With a positioner

≤ 1.0

Dead zone %

Without positioner

≤ 3.0

With a positioner

≤ 0.4

Allowable leakage rate L/H

1× 10 -4 ×
fixed valve capacity

Fixed travel deviation %

± 2.5

turn-on and – off method	Act-uator type	Spring range Kpa	Pres-sure of the air Kpa	Needed components	DN(dimension of the seat)mm
					20				25	40		50	60	80	100	150		200
					(10)	(12)	(15)	(20)	25	(32)	(40)	50	60	80	100	(125)	(150)	200
Driven off by the air	ZHA -22	20~100 20~100 40~200	140 250 500	P P PorR	6.4 6.4 6.4		5.94 6.4 6.4	3.34 6.4 6.4	2.14 6.4 6.4
	ZHA -23									3.31 6.09 6.4	0.84 3.9 5.26	0.53 2.5 3.39
	ZHA -34												0.51 2.36 3.21	0.33 1.56 2.12	0.21 1.0 1.35
	ZHA -45															0.22 1.02 1.39	0.15 0.71 0.97	0.08 0.40 0.54
Driven on by the air	ZHB -22	20~100 40~200 80~240		P PorR P	4.46 6.4 6.4	3.09 6.4 6.4	1.98 5.94 6.4	1.11 3.34 6.4	0.71 2.14 4.99
	ZHB -23									0.44 1.37 3.05	0.28 0.84 1.95	0.18 0.53 1.25
	ZHB -34												0.17 0.51 1.18	0.11 0.33 0.78	0.07 0.21 0.5
	ZHB -45															0.07 0.22 0.51	0.05 0.15 0.35	0.028 0.08 0.20

Sectors	Material	Temperature range	Notes
Body and upper-bonnet	HT200	15~200º C
	WCB	-20~425º C
	ZG1Cr18Ni9Ti	-40~550º C
	ZG0Cr18Ni12Mo2Ti
Valve core? and seat	1Cr18Ni9Ti
Valve core? and seat	0Cr18Ni12Mo2Ti	-400~550º C
Packing	PTFE	-40~200º C
Diaphragm	Bunna rubberand and forced polyester fabric
Spring	60Si2Mn
Diaphragm? bonnet	A3

Prod Model:	GEMU
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Body:	Two-Seater Casting
Pressure:	ANSI 600; JIS 40k; Pn6.4mpa
Flange:	Ff, RF, Rj and LG
Name:	Pneumatic Diaphragm Valve
Material:	Stainless Steel
Structure:	Y-Global Diaphragm Valve
Actuator:	Pneumatic
Function:	Intelligent Type
Connection:	Internal Threaded Connection Diaphragm Valve
Standard:	GB

Zhejiang Zhongte Pneumatic Valve Fitting Co., Ltd. Specializes in manufacturing pneumatic/electric actuators and control valves. Our company is located in Shacheng Industry Park called "Chinese valve city".

Our company was built in 1994 and covers an area of 5, 200 square meters. We have set up head office, sales department, technical department, purchase department, production department, QC department, supply department, and finance office in our company. We keep trying for ten years, and now Zhongte has grown to be a company with two subsidiary companies.

We have perfect process centre and quality inspection equipment. The process centre owns lathes, milling machines, and boring lathe numerical control machines for 40qtys. There are 5 imported vehicle process centers and many high quality numerical machines. At present, we mainly manufacture pneumatic actuators, pneumatic ball/butterfly valves, electric actuators, pneumatic/electric control valves, and other wise products. Our products are widely used in petroleum, chemical industry, electric power, metallurgy paper making, light industry, and pharmacy and food industry.

Our company absorbs advanced technologies. We use CAD, CAE, CAM, FEA and finite element analysis to design. Our products have attained ISO9001: 2000 international quality system certification.

We hope that we may return a good reputation by high quality products, reasonable prices and perfect service for customers' support with the aim of a long-term cooperation based on equality and mutual benefits.