| Connection Form: | Flange |
|---|---|
| Structure: | Swing |
| Pressure: | Ordinary Pressure |
| Function: | Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence |
| Sealing Form: | Gland Packings Globe Valve |
| Flow Direction: | Unidirection |
| Samples: |
|---|
| Customization: |
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Suppliers with verified business licenses
Audited Supplier 
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Name
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1-Body
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2-Stem
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3-Spring
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4-Disc
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5-Seat
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Material
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DI
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304
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304
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CF8
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EPDM
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FEATURES
• The innovative dual-plate design employs two spring-loaded plates suspended on a central vertical hinge as flow begins, the plates open in response to a resultant force Which acts at the center of the sealed surface area
• The contact point of the reacting spring leg's force acts beyond the center of the plate area,causing the heel to pen first.This prevents rubbing of the seal surface prior to normal plate opening
• As the velocity of flow decreases, torsion spring action reacts automatically. The moves of plates closer to the body seats, reducing the distance and time of travel for closure. By Having the plates closer to the body seats at the time of flow reversal.the valve dynamic response is greatly enhanced.This dramatically reduces the water hammer effect
• At closing, the point of spring force causes the plates to close first. This prevents dragging of the heels of the plates and periods maintains seal integrity for much longer periods
APPLICATIONS
Steam, superheated water, hot water, cold water, fluids without acidity or alkalinity properties,chemicals
Technical Parameters
| Nominal diameter(mm) | 50~900 | 50~900 | ||
| Nominal pressure(Mpa) | 1.0 | 1.6 | ||
| Testing pressure | Shell(Mpa) | 1.5 | 2.4 | |
| Seal(Mpa) | 1.1 | 1.76 | ||
| Suitable temperature(°C) | -40°C~200°C | |||
| Suitable medium | Drinking water,sewage,seawater,food,medicines,gas,oil and acid | |||
Main Raw Material
| Body | Disc | Stem | Seat | Spring |
| Cast iron |
Plated ductile iron |
Stainless steel | EPDM/NBR | SS304 |
| Ductile iron | CF8 | WRAS-EPDM | SS316 | |
| Carbon steel | CF8M | Viton | ||
| Stainless steel | Aluminum bronze | customised | Silicon | |
| PS:Vulcanized seat | ||||
Reference Standard
| Design standard | API 594 | |||
| Testing standard | API 598 | |||
| End flange standard | DIN PN10 / PN16,ANSI 125# / 150#,BS4504 PN10 / PN16 | |||
| Face to face standard | API 594 | |||
| Overall Dimension and Weight |
| Size | ΦD | ΦD1 | L | Weight(kg) | |||
| DIN PN10 | DIN PN16 | ANSI150# | ANSI 125# | ASNI 150# | |||
| DN50 | 107 | 107 | 104 | 65 | 54 | 60 | 1.75 |
| DN65 | 127 | 127 | 123 | 78 | 60 | 67 | 2.29 |
| DN80 | 142 | 142 | 136 | 94 | 67 | 73 | 3.00 |
| DN100 | 162 | 162 | 174 | 117 | 67 | 73 | 5.00 |
| DN125 | 192 | 192 | 196 | 145 | 83 | 83 | 7.00 |
| DN150 | 218 | 218 | 222 | 171 | 95 | 98 | 9.50 |
| DN200 | 273 | 273 | 279 | 224 | 127 | 127 | 18.53 |
| DN250 | 328 | 329 | 340 | 276 | 140 | 146 | 31.00 |
| DN300 | 378 | 384 | 410 | 338 | 181 | 181 | 52.00 |
| DN350 | 438 | 444 | 451 | 375 | 184 | 184 | 70.00 |
| DN400 | 489 | 495 | 514 | 416 | 191 | 191 | 101.00 |
| DN450 | 539 | 555 | 549 | 467 | 203 | 203 | 119.00 |
| DN500 | 594 | 617 | 606 | 514 | 213 | 219 | 139.00 |
| DN600 | 695 | 734 | 717 | 616 | 222 | 222 | 205.00 |
| DN700 | 810 | 804 | 831 | 720 | 305 | 305 | 370.00 |
| DN750 | 883 | 770 | 305 | 305 | 420.00 | ||
| DN800 | 917 | 911 | 940 | 825 | 305 | 305 | 480.00 |
| DN900 | 1017 | 1011 | 1048 | 925 | 368 | 368 | 630.00 |
PRODUCT FEATURE
Other products
Why Choose US
Our factory is specialized in valves' production. As one of the biggest and most professional manufacturer and exporter majored in valves, we assure that we can provide our products with cheapest price, good quality and best service. If you like, welcome to our factory and have a look!
We test leakage of each roll before braiding, then we cut 300mm and crimp it to test
burst pressure after brading.
We use CNC Lathes Machine for end fittings production. Machine system, knife and inspection
tools are all imported from Japan.
We use Techmaflex Crimping Machine which is imported from France. This machine has
accurate and stable performance for crimping because it is produced for PTFE hose crimping only.
Contact to this supplier
Suppliers with verified business licenses
Audited Supplier 
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