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Origin: | Made In China |
Category: | Industrial Supplies / Machine Hardware / Valves |
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Last Online:21 Jul, 2014 |
application:Welded Ball Valve is a new type ball valve, widely used in petroleum, gas, chemical industry, pharmaceutical industry, HVAC, district heating, etc.
basic parameters:
Valve Size: DN15~DN300 (NPS ½ ~ 12)
Working Pressure: DN15 ~ 50 (NPS ½ ~ 2) PN40
DN65 ~ 300 (NPS 2½ ~ 12) PN25
Working Temperature:
-20˚C ~ 200˚C (Carbon Steel)
-40˚C ~ 220˚C (Stainless Steel)
Connection Type: Butt-weld, Flange
Operators: Lever, Worm Gear, Electric, Pneumatic, Hydraulic
standards:
EN 488 District heating pipes - Pre-insulated bonded pipe systems for directly buried hot water networks-Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
EN12266-1 Industrial valves - Testing of metallic valves-Pressure tests, test procedures and acceptance criteria-Mandatory requirements
DIN17175 Seamless Tubes of Heat-resistant Steels; Technical Conditions of Delivery
EN10028-2 Flat products made of steels for pressure purposes-Non-alloy and alloy steels with specified elevated temperature properties
EN10213-4 Technical delivery conditions for steel casting for pressure purpose
EN588-1 Cement pipes for sewer sand drains-pipes, joint sand fittings for gravity systems
EN10088-3 Technical delivery conditions for semi-finished products, bars, rods and sections for general purposes
ISO 5208 Industrial valves-Pressure testing of metallic valves
ISO5211 Industrial valves-turn valve actuator attachment
ISO 5752 Metal valves for use in flanged pipe systems; Face-to-face dimensions