(1)Structure:
1. Full bore or reduced bore
2. Rising stem with yoke
3. Pack bushing of automatic self aligning
4. Bolted bonnet with spiral wound gasket
5. Socket welding as per ANSI/ASME B16.11
6. NPT as per ANSI/ASME B1.20.1
(2)Material for main sparts:
1. Body: A105; A182 F22; A182 F304 (L); A182 F316 (L)
2. Gate: A276 430&410; A182 F304; A182 F304 (L), A182 F316 (L)
3. Stem: A182 F6; A182 F304; A182 F304 (L); A182 F316 (L)
4. Seat: A276 420; A276 304; A276 F304 (L); A276 F316 (L)
5. Gasket: Corrugated SS+graphite; SS+PTFE
6. Bonnet: A105; A182 F22; A182 F304 (L); A182 F316 (L)
(3)Size: 4/1-2
(4)Pressure grade: 150lb-1500lb