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Products
Design Features
Double offset construction design prevents galling of sealing joint face and maintains completeness of sealing and longer service life.
Wide-angle seat design prevents extrusion damage from over-tight contact between seat and disc and provides longer service life.
Two-section high-strength stem construction ensures easy repairing; and double offset construction makes online maintenance for seat and disc become rapid and easy.
Streamlined Spherical Disc with high flow capacity.
Internal Stem/Disc Drive eliminates the need for pins or bolts which create additional leak paths.
Flexible retaining ring on disc provides compensatory sealing pressure for seat, not only simple in construction, light in weight, but small in driving moment, simple and rapid in operation, with better flow adjusting and sealing capability.
Stem sealing is achieved by high-efficiency PTFE.
Technical Data
Standard valve standard conforms toAPI 609, BS EN 593, BS5155,ISO5752 GB T12238.
Face-to-face sizes conform to EN 558-1, basic series 14
Flange Drilling: ANSI B 16.1, BS4504, DIN PN 10 / PN 16, JIS 5K, 10K, 16K.
Test: API 598.
Lever / Worm gear / Electric operator.
Applicable size: DN50~DN2000
Pressure & Temperature ratings:
Working Pressure | 10/16/25 bar |
Testing Pressure | Shell: 1.5 times rated pressure, Seat: 1.1 times rated pressure. |
Working Temperature | -10°C to 80°C (NBR) -10°C to 120°C (EPDM) |
Suitable Media | Water, Oil and gas. |
Materials:
Parts | Materials |
Body | Cast iron, ductile iron, carbon steel |
Disc | Nickel ductile iron / Al bronze / Stainless steel |
Seal ring | EPDM / NBR / VITON / PTFE |
Stem | Stainless steel / Carbon steel |
Bushing | PTFE |
“O” ring | PTFE |
Worm gearbox | Cast iron / Ductile iron |
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