Basic Info.
Temperature
High Temperature
Structure
Through Way Globe Valve
Sealing Form
Bellows Globe Valve
Stem Thread Position
Outside Screw Stem Globe Valve
Application
Forged Steel Globe Valve, Bellows Globe Valve, Oil System,Gas System
Transport Package
Plywood Case
Product Description
WHY BELLOWS SEAL VALVES
One 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.
Application
Hot oil system, steam system, hot and cold water system etc.
Advantage
1,Stem :2-part rising stem with outside roll-formed thread; stem coupling with bellows anti-torque device .
2,Bellow : Multiple wall, fully flushed stainless steel bellows, secured against torsion, designed for 10,000 cycles; fully welded
3,360º free rotation disc that allows the cleaning of impurities that can carry the fluid to make the closure on the different surfaces of the seat, at the same time, it does not transmit the vibrations to the valve stem.
4,Conically shaped plug made of hardened chromium steel 1.4021/AISI 420, or hard-surfaced with stellite 6; body seat hard-surfaced with stainless steel 1.4370/ AISI 307 or stellite 21
5,Metal back seat with stroke limiter in open position and bellows anti-vibration device
6,Full size safety gland packing made of pure graphite; can also be supplied in PTFE if requested
7,Stainless steel camprofiled bonnet gasket coated with pure graphite, mounted in
tongue and groove bonnet flanges
8,Using coated sand casting technology, which can promise Zero trachoma, Higher precision, perfect surface .
Technical specification
Design standard: API602
Face to face dimension: ASME B16.10
Flanged ends: ASME B16.5
Test & inspection: API598
Main part materials
NO. | Part name | Material |
1 | Body | A105,304,316,316L |
2 | Seat | 304,316,316L,Stellite |
3 | Disc | 410,304,316,316L,Stellite |
4 | Bellows Protection unit | A105,304,316,316L |
5 | Gasket | Flexible graphite + stainless steel,PTFE |
6 | Lower stem | 420,304,316,316L |
7 | Bellows | 304,316L,316Ti,HC |
8 | Bolt | ASTM 194-B7,A193-B8 |
9 | Bonnet | WCB,304,316,316L |
10 | Stuffing Box | A105,304,316,316L |
11 | Packing | Flexible graphite,PTFE |
12 | Strut | 420,304 |
13 | Gland | A105,304 |
14 | Jack bolt | ASTM 194-B7,A193-B8 |
15 | Jack nut | ASTM 194-2H,A194-8 |
16 | Friction plate | 420,304 |
17 | Locator | WCB,CF8 |
18 | Upper stem | 420,304,316 |
19 | Stem nut | A105,304 |
20 | Strut nut | ASTM 194-2H,A194-8 |
21 | Spring gasket | 1060,304 |
22 | Nut | ASTM 194-2H,A194-8 |
23 | Spring gasket | 1060,304 |
24 | Handwheel | Carbon steel |
Performance specificationNominal Pressure | PN | |
Test Pressure | Strength test | 1.5PN | MPa |
Sealing test | 1.1PN |
Gas seal test | 0.6 |
-- | -- |
Suitable temp | -196ºC~600ºC |
Main connection size150LB |
DN | Main connection size |
L | D | D1 | D2 | b | f | | n-Φd |
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 |
11/4'' | 140 | 115 | 89 | 63.5 | 13 | 2 | | 4-Φ16 |
11/2" | 165 | 125 | 98.5 | 73 | 15 | 2 | | 4-Φ16 |
2'' | 203 | 150 | 120.5 | 92 | 16 | 2 | | 4-Φ19 |
300LB |
1/2" | 152 | 95 | 66.7 | 35 | 15 | 2 | | 4-Φ16 |
3/4'' | 178 | 115 | 82.5 | 43 | 16 | 2 | | 4-Φ19 |
1" | 203 | 125 | 89 | 51 | 18 | 2 | | 4-Φ19 |
11/4'' | 216 | 135 | 98.4 | 63.5 | 20 | 2 | | 4-Φ19 |
11/2" | 229 | 155 | 114.3 | 73 | 21 | 2 | | 4-Φ22 |
2'' | 267 | 165 | 127 | 92 | 23 | 2 | | 8-Φ19 |
600LB |
1/2" | 165 | 95 | 66.7 | 35 | 15 | 6.4 | | 4-Φ16 |
3/4'' | 190 | 115 | 82.5 | 43 | 16 | 6.4 | | 4-Φ19 |
1" | 216 | 125 | 89 | 51 | 18 | 6.4 | | 4-Φ19 |
11/4'' | 229 | 135 | 98.4 | 63.5 | 21 | 6.4 | | 4-Φ19 |
11/2" | 241 | 155 | 114.3 | 73 | 23 | 6.4 | | 4-Φ22 |
2'' | 292 | 165 | 127 | 92 | 26 | 6.4 | | 8-Φ19 |
Jessie Zhu (Miss.)Mob +86-15257760185
Website: 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.