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Help CenterFlange Metal Seal Stainless Steel Butterfly Valve , Triple Offset Butterfly Valves
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Certification:ISO9001/2000 , CE
Flange Metal Seal Stainless Steel Butterfly Valve , Eccentric Triple Offset Valves
Stainless Steel Butterfly Valve of Flange Metal Seal 316 Stainless Steel Butterfly Valve
Specifications
stainless steel butterfly valve
1. Zero leakage in air tight test;
2. Excellent anti-corrosive performance
1. Purpose:
Triple-eccentric metal to metal seal butterfly valves designed in triple offset construction, laminated seal or metal to metal seal that can withstand high temperature and high pressure special for long service life and provides energy saving. The high performance butterfly valve are designed as a device to shut-off or regulate the working medium flow and installed in industrial pipelines with corrosive medium in metallurgy, iron and steel industry, power plant, petroleum, chemical industry, heat supply, inflammable gas, municipal water supply and drainage and etc.
As the latest technology achievement, triple-eccentric butterfly valves provide a variety of tyoes to meet different face to face dimensions, such as wafer type, lug type, flanged type, ring-joint type, butt weld type and jacketed type. It is suitable for acid alkali and other corrosive medium with both high and low temperature due to wide material selection. Especially in large-diameter butterfly valve, it is continusously replacing the shut-off valves such as gate valves and ball valves with its advantage of zero leakage; Meanwhile it is also continuously replacing the regulating valves such as globe valve with its excellent performance in regulation and control.
3. Features:
1) High performance triple eccentric patent sealing system laminated seat ring: Zero leakage sealing in bi-directional (As per DIN Class 1 or ANSI Class VI);
Massive seat ring: Bi-directional tight sealing (As per ANSI Class V);
2) Excellent for isolation and control of gases and liguids;
3)Wleded-in stinless steel or stellited body seat special for long life service;
4) No friction, wear and galling in the seat (Compression only);
5) Easy replaceable and adjustable seal ring;
6) Applicable to harsh working condition such as high temperature, high pressure and corrosive conditions;
7) Metal to metal seal up to +600 °C;
8) Self-compensating for process temperature variances;
9) Low operation torque and reliable seated torque;
10) Inherent fire-safe design.
3. Standard:
| Design & Manufacture | AWWA C504 / API 609 |
| Flange Connection | AWWA C207 / ASME N16.5 / ASME B16.47 |
| Face to Face Dimension | AWWA C504 / API 609 |
| Test & Inspection | AWWA C504 / API 598 |
4. Technical date:
1)
| DN | 2\"~68\" | 2\"~48\" |
| PN | 150LB | 300LB |
| Shell Test (MPa) | 3.0 | 7.5 |
| Seal Test (MPa) | 2.2 | 5.5 |
| Air Tight Test (MPa) | 0.6 | 0.6 |
2)
| Leakage Rate | Conformance with API 598 |
| Applicable Temperature | Carbon Steel: -29°C ~ 425°C; Stainless Steel: -40°C ~ 550°C; Cr-Mo-V Steel: -40°C ~ 550°C; Cr-Mo-V Ti Steel: -40°C ~ 550°C; |
| Applicable Medium | Fresh water, sea water, sewage, air, steam, food, meducines, petroleum products and all kinds of weak corrosive medium, such as oil, acid, alkali, salt, etc. |
| Operating Type | Manual, worm gear, electrice, pneumatic, hydraulic, electro-hydraulic, etc. |
5. Material Specification:
| Ref | Description | Material |
| 1 | End Cap | Carbon Steel, Stainless Steel |
| 2 | Gasket | S.S+Graphite Sprial Wound Gasket, PTFE |
| 3 | Thrust Ring | Carbon Steel, Stainless Steel |
| 4 | Bushing | Self-lubr |
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