Feature:
1. Full bore /reducing bore
2. Fireproof and anti-static electricity design
3. A pair of opposite butterfly shaped spring pads
4. Anti blow off valve stem
5. Double sealing structure in the middle of valve stem
6. Sealing valve cover of bolt and thread spacer
Standard:
Design & manufacture: BS5352 MSS SP-118
SW end conforms to ANSI B 16.11
NPT end conforms to ANSI B 16.10
BUTT-WELDING conforms to ANSI B 16.25
Flange end conforms to ANSI B 16.5
Testing & Inspection: API 598