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Special Valves

Rubber,PTFE,PFA,F46 Lined Diaphragm Valve

Rubber,PTFE,PFA,F46 lined Diaphragm Valve have two types : weir (saddle) type and "straight-way" type .The weir type diaphragm valve has its two ports in line with each other on the opposite sides of the valve, whereas the weir type has the in/out ports located at a 90 degree angle from one another. The weir type is the most common in process applications and more commonly used as a tank bottom valve.

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Description

Rubber,PTFE,PFA,F46 lined Diaphragm Valve have two types : weir (saddle) type and "straight-way" type .The weir type diaphragm valve has its two ports in line with each other on the opposite sides of the valve, whereas the weir type has the in/out ports located at a 90 degree angle from one another. The weir type is the most common in process applications and more commonly used as a tank bottom valve.


Description:
1.Rubber&PTFE lined diaphragm valve is ideally suited for shut-off, flow control and throttling of corrosive process media in either liquid or gaseous state.
Its main features are heavy-duty, robust construction, maintenance-free, easy replacement of components on site. Convenient, flexible and accurate open or close.
2.It can sustain any corrosive medium in addition to the molten alkali metals and fluorine elements. It is ideal products used in chlor-alkali, industrial in organic chemicals, metal and mining, nitrogen and phosphatic fertilizers, petroleum refining, pharmaceutical etc.
3.It is not applicable for diaphragm used in medium with hard particles, which will cause diaphragm damage and leakage.
4.The working temperature cannot exceed the specified range.
5.Open the diaphragm too frequent will influence the sealing performance.
6.Lining material:NR,EPDM,PFA,PTFE,F46 etc.
7.Operation methods:manual,electric, pneumatic.
8.TANA lined diaphragm valves are available as per the needs of applications in additional sizes and other than standard materials.
We offer lining materials like NR,EPDM,PFA,PTFE,F46 etc.


Temperature:
NR:≤85℃
EPDM:≤120℃
PTFE : ≤120°C    
PFA: ≤120°C  
Lining Thickness:Min. 3.0mm

Specification:
Body Material:Cast Iron,Ductile Iron, A216/WCB, A351/CF8,A351/CF8M,A351/CF3,A351/CF3M,LCB, 
Lining Material:NR,EPDM,PFA,PTFE,F46 etc.
Diaphragm Part:NR,EPDM,PFA,PTFE,F46 etc.
Nominal Diameter: NPS 1/2"-16" DN15-400
Pressure Range: 0.6Mpa ,1.0Mpa,1.6Mpa,class150
Connection Type: Thread,Flange 
Operation Method:manual,electric, pneumatic.
Suitable:≤85℃、≤100℃、 ≤120℃、≤150℃

The materials of main parts

No.

Part

Cast iron

Cast steel

Stainless steel

Z

C

P

R

P

R

1

Body/Bonnet

HT250

WCB

CF8

CF8M

CF3

CF3M

2

disc/stem

35

1Cr13

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

00cr18Ni10

00Cr17Ni14Mo2

3

lined/seat

PTFE(F4),FEP(F46),PFA

4

diagram

FEP(F46),PFA,EPDM

5

yoke

WCB

CF8

CF8

6

Stem nut

ZCuAI10Fe3

ZCuAI10Fe3

ZCuAI10Fe3

7

bolt

35

1Cr17Ni2

1Cr18Ni9Ti

8

nut

45

0Cr18Ni9

0Cr18Ni9

9

handwheel

WCB

WCB

WCB


Main external and connection dimensions(mm)






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