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Forged steel gate valve has three kinds of bonnet design, the first is a bolt-type valve bonnet, connected by concave and convex surface, stainless steel with flexible graphite spiral wound gasket, ring can also be used on request connection, the second is the welding bonnet, Sealing by thread after welding, according to demand can also be used directly rigid welding, the third is self-sealing bonnet, threaded and self-sealing bonnet connection.

Gate valve structure design and specification:

Forged steel gate valve manufacturing according to API 602, BS5352, ANSI B16.34.
Test and acceptance per API 598, logo according to MSS SP-25.

Structure type is as follows:

1, full diameter or reduced diameter;
2, Ming rod with bracket;
3, self-aligning at both ends of the packing pressure sleeve;
4, with wound gasket bolt type valve cover, Seal bonnet
5, body inverted seal;
6, socket welding ANSI / ASME B16.11;
7, the threaded end (NPT end) according to ANSI / ASME B1.20.1.

Standard material list

Serial number	Part Name	CStoASTM	AStoASTM	SStoASTM
Serial number	Part Name	A105	F22	F304L	F316L
1	Body	A105	A182 F22	A182F 304L	A182 F316L
2	Seat	A276 420	A276 304	A276 304L	A276 316L
3	gate	A182F 430 & 410	A182 F304	A182F 304L	A182 F316L
4	Valve stem	A182 F6	A182 F304	A182F 304L	A182 F316L
5	Gasket	316 clip flexible graphite		316 Clamp PTFE
6	cap	A105	A276 F304	A276F 304L	A276 F316L
7	bolt	A193 B7	A193 B16	A193 B8	A193 B8M
8	Pin	A276420		A276 304
9	Packing pressure sleeve	A276410		A182F 304L	A182F F316L
10	Easter bolt	A193 B7	A193 B16	A193 B8	A193 B8M
11	Packing platen	A105	A182 F11	A182F 304L	A182F 316L
12	Nut	A194 2H	A194 4	A194 8	A194 8M
13	Stem nut	A276 420
14	fasten the screw nut	A194 2H	A194 4	A194 8	A194 8M
15	Nameplate	SS
16	Handwheel	A197
17	Gasket	A473431
18	filler	Flexible graphite		PTFE
Suitable media		Water, steam, oil and so on	Water, steam, oil and so on	Nitric acid, acetic acid and so on
proper temperature		-29 ° C to 425 ° C	-29 ° C to 550 ° C	-29 ℃ ~ 200 ℃

The main connection size and weight

NPS	Reduced diameter	3/8 "	1/2 "	3/4 "	1"	1 1/4 "	1 1/2 "	2"
NPS	Full diameter		3/8 "	1/2 "	3/4 "	1"	1 1/4 "	1 1/2 "	2"
L		79	79	92	111	120	120	140	178
H open		158	158	169	197	236	246	283	330
W		100	100	100	125	160	160	180	200
weight	Bolt type	2.1	2.0	2.3	4.3	5.9	6.9	11.1	15.2
weight	Welded	1.8	1.7	2.0	3.8	5.1	6.1	10.2	14.2

The next：Stainless steel cryogenic valve

The previous：Forged steel thread, socket welding globe valve

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