Flanged Forged Steel Pressure Seal Gate Valve

Introduction
Forged steel flanged pressure seal gate valve is the most common on-off valve. This pressure seal valve is mainly composed of valve body, disc, bonnet, valve gland, gasket, bolt and nut. Disc is the on-off component. It utilizes disc to connect (by fully opened) or cut off (by fully closed) the medium in the pipeline. The disc moves up and down in the direction perpendicular to the moving medium. Gate valve cuts off the medium movement like a sluice gate, so it’s also called sluice valve.

Application
Flanged pressure seal gate valve can be widely applied as fluid regulating and intercepting equipment in various pipelines, such as tap water, sewage, construction, petroleum, chemical, food, medicine, textile, electric power, shipbuilding, metallurgy, and energy pipeline systems.

Classification
Flanged pressure seal valves can be classified according to fluid’s pressure grades (such as 900LB, 1500LB and 2500LB).

Advantages
1. Flanged pressure seal gate valve is suitable for using in pipelines on various transmission systems.
2. The great sealing property and high wear resistance of the valve contributes to reducing the cost.
3. 18 months warranty and lifelong technology service are available for our products.
4. Valve seat is replaceable, which makes maintenance more simple and convenient.
5. Valve body adopts precision casting technique.
6. Twice shot blasting processing on outer surface makes the flanged steel valve look fine and smooth.
7. Numerical control processing is utilized on valve disc.
8. Forged steel flanged pressure seal gate valve needs small torsion to open.

Pressure: CLASS900-2500 PN16.0-42.0
1. Welded Bonnet/Pressure Sealed Bonnet
2. Reduced Port
3. Solid Wedge Gate
4. Flange Ends/Butt-Welding Ends

Technical Specification of Flanged Pressure Seal Gate Valve

Technical Specification	ASME/API/BS	GB/JB
Design Standard	ASME B16.34/BS5352	GB/T12235 GB/T12224
Pressure-Temperature Rating	ASME B16.34	GB/T12224
Face-Face	ASME B16.10	GB/T12221 JB/T96-95
Flange Ends	ASME B16.5	GB/T9113JB/T82.1~82.4
Butt Welding Ends	ASME B16.25	GB/T12224
Inspection & Test	API598	JB/T9092

Material List for Main Parts of Flanged Pressure Seal Gate Valve

No.	Part Name	ASTM
		Carbon Steel		Tailess Steel	Alloy Steel
1	Body	A105	LF2/LF3	A182 F304	A182 F11/F22
2	Disc	A182F6a	A182F6a	A182 F304	A182 F6a
3	Stem	A276-410	A276-410	A276-304	A276-410
4	Gasket	Graphite + 304
5	Sealing Ring	Graphite
6	Yoke	A216-WCB	A216-WCB	A351 CF8	A216-WCB
7	Bonnet	A105	LF2/LF3	A182 F304	A182 F11/F22
8	Gland	A216-WCB	A216-WCB	A351 CF8	A216-WCB
9	Bolt	A193 B7	A320L7	A193 B8	A193 B16
10	Packing	Graphite
11	Stem Bushing	A276-410	A276-410	A276-304	A276-410
12	Gland	A216-WCB	A216-WCB	A351 CF8	A216-WCB
13	Eye Blot	A193 B7	A320 L7	A193 B8	A193 B7
14	Stem Nut	A276-410
15	Hand Wheel	A197 or A47-32510

Main Dimensions & Weight of Flanged Pressure Seal Gate Valve

Pressure	Size		Main Dimension of Valve									Weight(kg)
	mm	in.	d	LRF	LBW	LRTJ		H			W
								WB		PB		WB	PB
CLASS900 PN16.0	15	1/2	10	216	216		216	197	321		180	9.8	11.5
	20	3/4	13	229	229		229	211	321		180	9.7	11.2
	25	1	19	254	254		254	238	321		180	9.5	10.8
	32	1-1/4	24	279	279		279	257	380		200	17.5	18
	40	1-1/2	40	305	305		305	276	414		200	21.6	22
	50	2	50	368	368		371	320	502		300	42.7	44
CLASS1500 PN26.0	15	1/2	10	216	216		216	197	321		180	9.8	11.5
	20	3/4	13	229	229		229	211	321		180	9.7	11.2
	25	1	19	254	254		254	238	321		180	9.5	10.8
	32	1-1/4	24	279	279		279	257	380		200	17.5	18
	40	1-1/2	40	305	305		305	276	414		200	21.6	22
	50	2	50	368	368		371	320	502		300	42.7	44
CLASS2500 PN42.0	15	1/2	10	264	264		264	197	321		180	12.3	13
	20	3/4	13	273	273		273	211	321		180	12.1	12.7
	25	1	19	308	308		308	238	321		180	11.8	12.5
	32	1-1/4	24	349	349		352.2	257	380		200	20.9	21.8
	40	1-1/2	40	384	384		387.2	276	414		200	27.5	29.3
	50	2	50	451	451		454.2	320	502		300	53.3	55.4

Note: H means the height when valve is fully opened.

Attentions When Selecting Flanged Pressure Seal Gate Valves
1. Medium (Pressure Seal Valve’s Material and Corrosivity)
2. Working Pressure (Intensity and Airtightness)
3. Working Temperature
4. Size of Diameter
5. Valve Form (Category, Structure and Connection Type)

Attentions When Using Flanged Pressure Seal Gate Valves
Please avoid small opening of the disc, since the washout of medium in high speed flow will accelerate sealing surface’s damage.

Payment, Package, Delivery and Maintenance
1. Products can be paid by T/T, D/P, D/A, L/C or according to your requirement.
2. Pressure seal valves are packaged by standard exported wooden cases.
3. Our flanged pressure seal gate valves are transported by sea, railway or air.
4. Guarantee period of our products is 18 months. Lifelong technology service is offered.

Shanghai Kayson Valve Co., Ltd specializes in researching, designing, manufacturing and selling pressure seal valves. Our main products include ball valves, gate valves, globe valves, check valves, strainers and forged steel valves. Our flanged pressure seal gate valves are exported to Brazil, Argentina, Mexico, Canada, Russia, Kazakhstan, Indonesia, South Korea, Japan, Australia, Bulgaria, Spain, France, England, Sweden, Dubai, Arab, Pakistan, South Africa, etc.