Bellow Seal Forged Gate Valve

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Bellow Seal Forged Gate Valve

Product Parameter Information

Category Forged Gate Valve

Teji Valve manufactures forged steel bellow sealed gate valves in three kinds bonnet design—Bolted Bonnet, Welded Bonnet and Pressure Sealed Bonnet.

Office

Anfeng Industrial Zone, Oubei Town, Yongjia County, Zhejiang Province

Product Description

PRODUCT INTRODUCTION

Teji Valve manufactures forged steel bellow sealed gate valves in three kinds bonnet design—Bolted Bonnet, Welded Bonnet and Pressure Sealed Bonnet. With the rapid development of chemical industry, nuclear industry and other modern industries, the number of pipes with radioactive media is increasing. Valves used in these lines and installations have special requirements for leaky seals, the use of general packing sealing device has been unable to meet the requirements. Therefore, a bellows stem seal is required. The opening and closing part of this bellow seal forged gate valve is a plug shaped disc with a flat or conical sealing surface and the disc moves in a straight line along the center line of the fluid. The bellow seal forged gate valve is often used in situations where the stem seal is required to be tight, such as in high vacuum applications and in the nuclear industry.

CONSTRUCTION FEATURES

Forged Steel, Outside Screw and Yoke, Rising Stem;
Non-Rising Handwheel, Integral Backseat;
Solid Wedge, Renewable Seat Rings, Spiral Wound Gasket;
Reduced Bore or Full Port;
Socket Welded, Threaded, Butt Welded, Flanged End.

STRUCTURE

DIMENSIONS (MM) AND WEIGHTS (KG)

NPS	Conv.	3/8″	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″
NPS	Full		3/8″	1/2″	3/4″	1″	1-1/4″	1-1/2″
L		79	79	92	111	120	152	172
H(OPEN)		220	220	225	244	321	321	347
W		100	100	100	125	160	160	180
Weights	Bolted	3.2	3.0	4.8	7.9	11.0	16.8	25.2
Weights	Welded	3.0	2.8	4.8	7.0	9.6	13.5	20.2

DATA TABLE

NO.	Part Name	CS to ASTM	AS to ASTM	SS to ASTM
NO.	Part Name	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
Suitable Temp.		-29~425 deg C	-29~550 deg C	-29~180 deg C

NOTE: Other materials are available upon request.

APPLICATION STANDARD

API 602, ASME B16.34, BS 5352
Testing according to API 598
Marking to MSS SP25
Socket Welded Ends to ASME B16.11
Screwed Ends to ASME B1.20.1
Butt Welded Ends to ASME B16.25
Flanged Ends to ASME B16.5

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Quality Assurance

IMPROVEMENTS:

Set up a trained and standardized Quality Control technician Team.
With our computer managements system to analyze the data, find out the weak link of management, improve the quality and efficiency, and reduce the waste in the process.
Through the computer system to make information transparent to customers, customers can master the order status and product related information in real time.
Advance Machines: take advanced technology and reliable equipment to ensure machining accuracy and long-term stable production capability.

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Anfeng Industrial Zone, Oubei Town, Yongjia County, Zhejiang Province

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