Basic Info.
Seal Surface
Wedge Gate Valve
Application
Water Industrial Usage
Transport Package
Plywood Case
Product Description
WHY BELLOWS SEAL VALVESOne of the most frequent and serious problems valves face is gland leakage, results in wasted and increased plant downtime. Apart from the high cost of energy losses, Gland leakages can also cause serious environmental, ecological and health hazards to plant workers and personnel. Leakage of sensitive material can also constitute to a fire hazard, explosion, or damage to equipment by corrosive material. Air entering the pipeline could produce inflammable explosive or poisonous mixtures. Gland packed valves often demand continual maintenance in accessibility creating particular difficulties. The bellows comply to conditions at high temperatures and are capable of withstanding over 10,000 cycles without failure.ApplicationHot oil system, steam system, hot and cold water system etc.Advantage1.Bellow seal element. The key part of bellow sealed globe valves is mental bellow. It is the connection between cover and stem with automatic roll welding. The mental bellow can keep the stem part no leakage.2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life.3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.4.Grease nipple. It can direct lubricate the stem, nut and sleeve.5.Ergonomic hand wheel. It provide longer service life and easier operation.Technical specificationDesign standard: ASME B16.34Face to face dimension: ASME B16.10Flanged ends: ASME B16.5Test & inspection: API 598Performance specificationNominal Pressure | PN | |
Test Pressure | Strength test | 1.5PN | MPa |
Sealing test | 1.1PN |
Gas seal test | 0.6 |
Bellows test | 1.1PN |
Suitable temp | -196ºC~600ºC |
Main part materialsNO. | Part name | Material |
1 | Body | WCB,CF8,CF8M |
2 | Seat | 304,Stellite |
3 | Disc | WCB+13Cr,CF8,CF8M |
4 | Stem | 13Cr,F304,F316 |
5 | Bellows | S.S304,S.S316L |
6 | Screw nut | ASTM A194-2H,A194-8,A194-8M |
7 | Stud | ASTM A193-B7,A193-B8,A193-B8M |
8 | Nut | ASTM A194-2H,A194-8,A194-8M |
9 | Metal gasket | Stainless+ Flexible graphite |
10 | Yoke | WCB,CF8,CF8M |
11 | Nut | ASTM A194-2H,A194-8,A194-8M |
12 | Stud | ASTM A193-B7,A193-B8,A193-B8M |
13 | Nut | ASTM A194-2H,A194-8,A194-8M |
14 | Gasket | Stainless+ Flexible graphite |
15 | Seal bowl | S.S304,S.S316 |
16 | Packing | Flexible graphite |
17 | Extremely heavy pin | 1045,S.S304,S.S316 |
18 | Extremely heavy bolt | ASTM A193-B7,A193-B8,A193-B8M |
19 | Extremely heavy nut | ASTM A194-2H,A194-8,A194-8M |
20 | Gland | WCB,CF8 |
21 | Stem nut | Copper alloy,D2,BL-2 |
22 | Bearing nut | 1045,S.S304,S.S316 |
23 | Hand wheel | 60-40-18 |
24 | Locknut | 1045 |
Main connection sizeMaterial | DN | Main connection size |
150 LB |
L | D | D1 | D2 | b | f | | n-Φd |
A105 | 1/2″ | 108 | 90 | 60.5 | 35 | 10 | 2 | | 4-Φ16 |
3/4″ | 117 | 100 | 70 | 43 | 11 | 2 | | 4-Φ16 |
1″ | 127 | 110 | 79.5 | 51 | 12 | 2 | | 4-Φ16 |
1-1/4″ | 140 | 115 | 89 | 63.5 | 13 | 2 | | 4-Φ16 |
1-1/2″ | 165 | 125 | 98.5 | 73 | 15 | 2 | | 4-Φ16 |
A105 WCB | 2″ | 178 | 150 | 120.5 | 92 | 16 | 2 | | 4-Φ19 |
WCB | 2-1/2″ | 190 | 180 | 139.5 | 105 | 18 | 2 | | 4-Φ19 |
3″ | 203 | 190 | 152.5 | 127 | 20 | 2 | | 4-Φ19 |
4″ | 229 | 230 | 190.5 | 157 | 24 | 2 | | 8-Φ19 |
5″ | 254 | 255 | 216 | 186 | 24 | 2 | | 8-Φ22 |
6″ | 267 | 280 | 241.5 | 216 | 26 | 2 | | 8-Φ22 |
8″ | 292 | 345 | 298.5 | 270 | 29 | 2 | | 8-Φ22 |
10″ | 330 | 405 | 362 | 324 | 31 | 2 | | 12-Φ25 |
12″ | 356 | 485 | 432 | 381 | 32 | 2 | | 12-Φ25 |
14″ | 381 | 535 | 476 | 413 | 35 | 2 | | 12-Φ29 |
16″ | 406 | 595 | 540 | 470 | 37 | 2 | | 16-Φ29 |
18″ | 432 | 635 | 578 | 533 | 40 | 2 | | 12-Φ32 |
20″ | 457 | 700 | 625 | 584 | 43 | 2 | | 20-Φ32 |
300 LB |
| 1/2″ | 140 | 95 | 66.5 | 35 | 15 | 2 | | 4-Φ16 |
3/4″ | 152 | 115 | 82.5 | 43 | 16 | 2 | | 4-Φ19 |
1″ | 165 | 125 | 89 | 51 | 18 | 2 | | 4-Φ19 |
1-1/4″ | 178 | 135 | 98.5 | 63.5 | 20 | 2 | | 4-Φ19 |
1-1/2″ | 190 | 155 | 114.5 | 73 | 21 | 2 | | 4-Φ22 |
A105 WCB | 2″ | 216 | 165 | 127 | 92 | 23 | 2 | | 8-Φ19 |
WCB | 2-1/2″ | 241 | 190 | 149 | 105 | 26 | 2 | | 8-Φ22 |
3″ | 282 | 210 | 168.5 | 127 | 29 | 2 | | 8-Φ22 |
4″ | 305 | 255 | 200 | 157 | 32 | 2 | | 8-Φ22 |
| | | | | | | | |
6″ | 403 | 320 | 270 | 216 | 37 | 2 | | 12-Φ22 |
8″ | 502 | 380 | 330 | 270 | 42 | 2 | | 12-Φ22 |
10″ | 568 | 445 | 387 | 324 | 48 | 2 | | 16-Φ29 |
12″ | 648 | 520 | 451 | 381 | 51 | 2 | | 16-Φ32 |
14″ | 762 | 585 | 514.5 | 413 | 54 | 2 | | 20-Φ32 |
16″ | 838 | 650 | 571.5 | 470 | 58 | 2 | | 20-Φ35 |
18″ | 914 | 710 | 628.5 | 533 | 61 | 2 | | 24-Φ35 |
20″ | 991 | 775 | 686 | 584 | 64 | 2 | | 24-Φ35 |
Attn:Bily YeMob: +86-18958817762 Website: vmvvalves.en.made-in-china.com ; vmvvalves.en.made-in-china.com
Address:
Zhiyi Road, Lingxia Industrial Zone, Wuniu, Wenzhou, Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Arts & Crafts, Chemicals, Industrial Equipment & Components, Instruments & Meters, Light Industry & Daily Use, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Security & Protection
Management System Certification:
ISO 9001
Company Introduction:
Zhejiang Newton Fluid Control Co., Ltd. (NFC)
Introduction
The NFC is a professional bellow sealed valves company located in Oubei Wenzhou which is named the land of pumps and valves. It is founded in 2000, when its name is Yongjia Huamei Valve, and devoted to valve research and development, manufacture, marketing and service. Through the past decade, with unremitting efforts and innovation, the NFC has become one of the leading companies in the valve industry. It has over 200 staff members, of which there are more than 20 employees with senior professional titles and more than 140 employees with professional valve manufacturing skills.