Manual Control Rubber Lined Type Wcb Steel Weir Diaphragm Valve

Product Description

Construction is as follows:  

Name	Diaphragm Valve
Structure	Weir Pattern Diaphragm Valve
Size	1/2"~12"; DN15~DN300
Normal pressure	Class 125LB,150LB,300LB; PN10,PN16,PN25
Design standard	GB/T 12239,MSS-SP-88,ISO 5752,BS 5156
Marked	MSS SP-25
Fire safe design	API607,API 6FA
End flange	ANSI B 16.5,ASME B16.47; EN1092,DIN2543~DIN2547,AS2129
Face to Face	ANSI B 16.10,API 6D; DIN3202,EN558-1,EN12982,ISO 5752
Test standard	BS 5156, MSS SP-82, API 598
Suitable temperature	-29~150°C
Medium	Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc.
Acidic environment	NACE MR0175
Operation	Hand Operated,Gear Operated, Electrical Actuated, Pheumatic Actuated

Features
There are two types of diaphragm valves:
Weir: The Weir Diaphragm valve can be used for either off/on and throttling services
Straightway: named also Straight-Thru is only used for on/off services.

- Non-stick property,Self sealing faces.

- High resistance to Thermal/Mechanical shock.

- Suitable for pressure and vacuum application.

- Easy to install,It is a quick opening valve.

- Long life and Zero maintenance.

- More economical than glass lined and special alloys.

- Carbon steel Diaphragm Valves are used on shut-off and throttling service for liquids, slurries and vacuum/gas.

- The seal is achieved by a flexible membrane, usually elastomer, and possibly reinforced with a metal part. The membrane is tensed by the effect of a stem/compressor with lineal movement until contact is made against the seal of the body.

-The operating parts of the diaphragm valve are isolated from the flow. This makes this valve suitable for viscous flows and also hazardous, abrasive and corrosive flows as its sealing system avoids any contamination towards or from the environment.

- Carbon steel Diaphragm Valves are available in a wide variety of metals, solid plastics, plastic, rubber and glass linings. They are well suited to the handling of multiple chemical applications both clear fluids as well as slurries.

-.The Carbon steel Diaphragm Valve has an extended use for applications at low pressures and slurry fluid where most other kinds of valves corrode or become obstructed.

- Can be tailor made to suit customer requirements

Brief Itntroduction:

- Its main features are heavy-duty, robust construction, maintenance-free, easy replacement of components on site. Convenient, flexible and accurate open or close.

- It is ideal products used in chlor-alkali, industrial in organic chemicals, metal and mining, nitrogen and phosphatic fertilizers, petroleum refining, pharmaceutical etc.

- It is not applicable for diaphragm used in medium with hard particles, which will cause diaphragm damage and leakage.

- The working temperature cannot exceed the specified range.

- Open the diaphragm too frequent will influence the sealing performance

Main Part & Materials:

Part Names	Part Materials
Body	A126 Class B	GGG50	WCB	CF8	CF8M	CF3	CF3M	CD4McN
Bonnet	A126 Class B	GGG50	WCB	CF8	CF8M	CF3	CF3M	CD4McN
Disc	A126 Class B	GGG50	WCB	CF8	CF8M	CF3	CF3M	CD4McN
Stem	35	35	F6a	F304	F316	F304L	F316L	F53
Stem Nut	ZCuA10Fe3
Lining	Fluorine -- PTFE, FEP, PCTFE, PVDF, TFE, PFA, RPP, PO   Rubber NR, BR, IIR, CR, EPDM, CSPE, FKM, SI ·
Diaphragm	FEP(F46), PFA,FPDM,etc
Packing	Graphite/PTFE
Bolts/Nuts	35/45	35/45	B7/2H	B8/8	B8M/8M	B8/8	B8M/8M	B8M/8M
Handwheel	HT200	HT200	WCC	WCC	WCC	WCC	WCC	WCC
Suitable Temperature	-10~150 °C	-10~150 °C	-29~150 °C	-29~150 °C	-29~150 °C	-29~150 °C	-29~150 °C	-29~150 °C

Size:


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