Key Specifications/Special Features:

Series F402 valves designed to comply with BS5155.
Compatible with GB, DIN, BS and ANSI125/150 flanges.
Face to face according to ISO 5752 basic series 14 (long)/DIN 3202 part 1 series F4. Adopting design of double-eccentric, the friction on sealing ring may be decreased to extend service life
One piece profile sealing resilient seat
Available in size 4″ to 48″.
Available with handles, manual gear operators, and electric or pneumatic
actuators.

Materials
1. Upper stem
Zinc plated steel; 
Stainless steel: ASTM A276 Type 316, Type 410, ASTM A582 Type 416;

2. Body
Ductile cast iron: ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15,

3. Disc
Ductile cast iron(nickel plated ): ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15, GB12227 QT450-10;

4. Seat
Ductile cast iron: ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15,
Stainless steel: ASTM A351 CF8, CF8M; CF3, CF3M; 
AL-bronze: ASTM B148 C95400;

5. Clamping ring
Ductile cast iron: ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15,

6. Lower stem
Zinc plated steel;
Stainless steel: ASTM A276 type 316, type 410, ASTM A582 Type 416;

7. Positioning screw
Stainless steel: ASTM A276 type 316; type 410,

8. End cap
Ductile cast iron: ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15,

9. O-ring
NBR, EPDM, neoprene, Viton;

10. Disc bolt
Stainless steel: ASTM A276 Type 316; Type 410,

11. Disc ring
NBR, EPDM, neoprene, Viton;

12. Taper pin
Stainless steel: ASTM A276 Type 304, Type 316;

13.  Bushing
PTFE, lubricated bronze;

14. Packing
NBR, EPDM, neoprene, Viton;

15. Key
 Carbon steel

16. Gland flange
 Ductile cast iron: ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15,