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Slab Gate Valve

The flat gate valve is suitable for oil, natural gas, water, oil and other pipelines with Class150～900/PN1.0～16.0MPa and working temperature of -29～121℃ to cut off or connect the medium in the pipeline. Slab gate valve has double parallel and center vertical sealing which gate valve in slabt shape.

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Slab Type Gate Valve

Main Features of the Product:

Size Range	1-1/2" - 36" (DN40-DN900)
Pressure Range	150LB~900LB; PN1.0Mpa~PN42.0Mpa
Connection Ends	Flange ends & Weld ends
Main Material	WCB, WCC, LCB, LCC, CF8, CF8M, 2205, Monel, Duplex Stainless steel etc.
Bonnet Type	Pressure Self-sealing and Bolted Bonnet
Operation	Manual Hand wheel, Gear, Electric, Pneumatic, Hydraulic etc.
Sealing Material	Soft seal; Hard face etc.
Design and Manufacture	API6D、JB/T5298
Connection ends	ASME B16.5 and ASME B16.47 A; GB/T 9113-2010
Testing & Inspection	API598
Applications	Petroleum, chemical industry, and electric power etc.

Structural Features of Slab Gate Valve Without Diversion Hole:

1. The valve body has two structures: casting and welding.

2. Its opening and closing force is small, and it is easy to operate, which is suitable for occasions that require frequent opening and closing.

3. Strong impact resistance: Due to the design of the structure, it can withstand high impact and fluid load, and is suitable for high-pressure systems.

4. Tight sealing performance: The flat gate valve without diversion holes has good sealing performance, and usually uses a flexible sealing ring to contact the gate, which can provide reliable sealing performance under high pressure or high temperature environment.

Technical Specifications:

Slab Gate Valve

Main Dimensions
CLASS		1.6MPA/2.5MPA/150LB		4.0MPA	300LB	6.4MPA/10.0MPa		/600LB
DN	NPS	L	L1	L	L1	L	L1	L
40	1-1/2	165	165	190	190	241	241	241
50	2	178	216	216	216	250	292	292
65	2-1/2	190	241	241	241	280	330	330
80	3	203	282	283	283	310	356	356
100	4	229	305	305	305	350	432	432
125	5	254	381	381	381	400	/	/
150	6	267	403	403	403	450	559	559
200	8	292	419	419	419	550	660	660
250	10	330	457	457	457	650	787	787
300	12	356	502	502	502	750	838	838
350	14	381	572	762	762	850	889	889
400	16	406	610	838	838	950	991	991
450	18	432	660	914	914	1050	1092	1092
500	20	457	711	991	991	1150	1194	1194
600	24	508	813	1143	1143	1350	1397	1397
700	28	610	914	1346	1346	1450	1549	1549
800	32	660	965	1527	1527	1650	1778	1778
900	36	711	1016	1727	1727	/	/

Main Advantages

Designed for industrial pipeline isolation rather than frequent flow regulation.
Suitable for larger-diameter pipelines and higher-pressure project conditions.
Can be configured with soft sealing or hard-faced sealing according to the medium.
Multiple actuation options support manual operation and remote automation.
Material choices support general service, low-temperature service, corrosion resistance, and demanding process media.

Typical Applications

Crude oil and refined-product pipelines.
Natural gas transmission and distribution systems.
Petrochemical and refinery pipelines.
Water injection and industrial water systems.
Long-distance process pipelines.
Energy, storage, and terminal projects.

How to Select a Slab Gate Valve

Confirm the pipeline pressure class and operating temperature.
Check whether flanged or butt-weld ends are required.
Confirm the need for bolted bonnet or pressure seal bonnet construction.
Select soft seat or hard-facing materials according to sealing and wear requirements.
Specify manual, gearbox, electric, pneumatic, or hydraulic operation.
Review valve bore, pipeline pigging requirement, and project flow characteristics with Chenyu.
Avoid using slab gate valves for continuous throttling service.