Bellow sealed valve is designed with bellow welded onto the bonnet and stem so that when the stem travels it drives the below expansion or decompression. It inherently eliminates the conventional design of possible stem packing leakage. Bellow valves are suitable for toxic and flammable services. THV forged bellows sealed valve has gate and globe types.
Application Standard:
Structure: Bolted bonnet or welded bonnet, outside screw and yoke.
Design standard conform to BS5352; MSS-SP-117
Socket end conform to ANSI B16.11.
Thread end conform to ANSI B1.20.1.
Butt-welded end conform to ANSI B16.25.
Flange end conform to ANSI B16.5.
Test standard conform to API 598.
Materials standard conform to ANSI/ASTM.
Size: From 1/2 inch to 2 inch.
Rating: From Class 150 to Class 1500
Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.
Bellow Materials: Stainless Steel, Inconel, Hastelloy, C276, Monel, etc.
NO. |
Part Name |
CS to ASTM |
AS to ASTM |
SS to ASTm |
Type A105 |
Type A182 F22 |
Type A182 F304 |
Type A182 F316(L) |
1 |
Body |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
2 |
Disc |
A276 420 |
A276 304 |
A276 304(L) |
A276 316(L) |
3 |
Gasket |
Corrugated SS + graphite |
SS + PTFE |
4 |
Bonnet Bolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M |
5 |
Stem |
A182 F6 |
A182 F304 |
A182 F304(L) |
A182 F316(L) |
6 |
Bellow Pipe |
SS |
7 |
Bonnet |
A105 |
A182 F22 |
A182 F604(L) |
A182 F316(L) |
8 |
Stem Packing |
Flexible Graphite |
PTFE |
9 |
Pin |
A276 420 |
A182 F304 |
10 |
Gland |
A276 420 |
A182 F304 |
11 |
Gland Eyebolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M |
12 |
Gland Flange |
A216 WCB |
A351 CF8 |
13 |
Gland Nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M |
14 |
Bearing Washer |
SS |
15 |
Yoke Nut |
A276 410 |
16 |
Nameplate |
SS |
17 |
Handwheel |
A197 |
18 |
H.W.Nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M |
Suitable Medium |
W.O.G.etc |
W.O.G.etc |
HNO3,CH3OOH etc |
Yongjia Taihong Valve Co., Ltd. (THV VALVE) is a professional high pressure valves manufacturer for application primarily in the petrochemical industry. Our product range consist of GATE VALVES, GLOBE VALVES, CHECK VALVES, BALL VALVES, BUTTERFLY VALVES & STRAINERS. All valves are designed, manufactured and tested according to the latest manufacturing specifications of the American and International Standards Organizations.
We possesses extrusion dies heat mechanical processing, welding, assembling, testing, etc. facilities. And also our company has a strong CAD design team and a professional QC team. Our strong production equipments and perfect testing means can effectively improve product quality and be sure users' interests.
THV VALVE has obtained certificates of ISO9001: 2008 and CE. All valves are with features of advanced structure, consummate production technology, complete specifications, good quality, etc. To satisfy the requirements of purchasing different types of valves from customers, we have established a trading department to purchase good quality products for our customers. All suppliers are listed in our SUPPLIER LIST after strict quality examining, and our QC will do inspect from raw materials to finished products, to ensure all specifications or requirements will not occur problems.
Quality first is our commitment, and competitive price and timely delivery are our promise. Our customers have trusted us to provide them with reliable valve products to meet their most severe and critical requirements. We welcome customers worldwide to build mutually beneficial network, and we are looking forward to cooperation with you on the successful road to create brilliant!