PFA Lined Diaphragm Valve Weir type
Technical Specification
Design and Manufacture: ASME B16.34
End-to-end dimension: HG/T3704
Flange Standard: ASME/ANSI 16.5
Inspection and testing: API 598

Product Specification
Body Material: A216/WCB, A351/CF8, A351/CF8M, A351/CF3, A351/CF3M, LCB, A536
Lining Material: PFA, FEP, PTFE, PO
Diaphragm Part: EPDM+PFA, FEP
Nominal Diameter: NPS 1/2-16
Pressure Range: 150lb 300lb JIS DIN
Connection Type: Flange connection
Operation Method: Electric Actuator, Pneumatic Actuator etc.
Products Description:
1. Youfumi 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: PFA, FEP, GXPO etc.
7. Operation methods: Manual, worm gear, electric, pneumatic and hydraulic actuator.
8. Youfumi lined diaphragm valves are available as per the needs of applications in additional sizes and other than standard materials.

Material Specification:
1. Lock screw: A320 B8
2. Body bolt: A320 B8
3. Handwheel: A216 WCB; A351 CF8
4. Sleeve: SS304
5. Bonnet: A216 WCB; A351 CF8; A351 CF8M
6. Stem nut: Brass
7. Stem: 2Cr13; A182 304; A182 316
8. Adjustable pad: SS304
9. Disc: A216 WCB; A351 CF8; A351 CF8M
10. Rubber Diaphragm: EPDM
11. Diaphragm: PFA; FEP
12. Body: A216 WCB+Lining material; A351 CF8+Lining material; A351 CF8M+Lining material
13. Nut: A194 2H; A194 8; A194 8M
14. Flat washer: 45#; A182 304; A185 316
15. Outer hexagonal screw: A197 B7; A320 B8; A193 B8M