Cast Steel Gate Valve

Material:WCB, LCB, WC6, CF8, CF8M, CF3, CF3M

Size Range:2″ to 24″

Connection Options:Flanged, Threaded (NPT, BSP), Butt Weld, Socket Weld

Working Pressure:Class 150 to Class 1500 (up to 2,500 psi / 172 bar)

Working Temperature:-29°C to 425°C

Sealing Options:Metal-to-Metal, Resilient Seat, Graphite, PTFE

Manufacturing Method:Cast, Forged, Machined

Applicable Medium:Water, Oil, Gas, Steam, Chemical Fluids

Manufacturing Standard:API 600, API 602, ASME B16.34, BS 5163, DIN 3352

Product Overview

The Flanged Steel American Standard Gate Valve is designed for use with ANSI Class 150-600, PN 2.0-16.0 MPa, and JIS 10-20K standards. It is suitable for pipelines operating within temperatures of -25°C to 425°C for carbon steel and -40°C to 500°C for stainless steel, and is used to either open or close the flow of medium within the system. Depending on the material selection, this gate valve is compatible with media such as water, steam, oil, nitric acid, acetic acid, strong oxidizers, and urea. The valve is available in manual, bevel gear, and electric drive configurations, making it versatile for various applications.

Product Features

Full Port Flow: Provides an unobstructed flow path, resulting in minimal pressure drop when fully open.

Reliable Sealing: Metal-to-metal or resilient seating options provide tight sealing, minimizing leakage.

Corrosion Resistant: Manufactured from materials such as stainless steel, cast iron, and bronze for excellent corrosion resistance.

Versatile Connection Options: Available in flanged, threaded, butt weld, and socket weld connections to accommodate a variety of piping systems.

Durable Construction: Forged or cast body for enhanced strength and extended service life.

Manual, Gear, or Actuated Operation: Can be operated manually using a handwheel, by a gearbox, or automated with electric or pneumatic actuators.

Specification Parameters

Structural Length Standard:
According to ASME B16.10, DIN 3202, BS EN 558

Connection Forms Standards:
Flanged per ASME B16.5, Threaded (NPT, BSP) per ANSI/ASME B1.20.1, Butt Weld per ASME B16.25, Socket Weld per ASME B16.11

Available Sizes (Caliber):
2″, 3″, 4″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″, 24″

Pressure-Temperature Rating:
Class 150, 300, 600, 900, 1500 as per API 600 and ASME B16.34

Pressure Range:
Up to 2,500 psi depending on size and material

Temperature Range:
-29°C to 425°C depending on material and sealing options

Performance parameters

Nominal pressurePN（MPa)	case	test pressure（MPa)		Sealed
Nominal pressurePN（MPa)	case	Sealed (liquid)	Seal (gas)	Sealed
1.6	2.4	1.8	0.6	1.8
2.5	3.8	2.8	0.6	2.8
4.0	6.0	4.4	0.6	4.4
6.4	9.6	7.0	0.6	7.0
10.0	15.0	11.0	0.6	11.0
16.0	24.0	18.0	0.6	18.0

Suitable medium and applicable temperature

Shell material	Suitable media	Applicable temperature (℃)
Carbon steel (C type)	Water, steam, oil	≤425
Chromium nickel titanium steel (P type)	Nitric acids	≤200
Chrome nickel molybdenum titanium steel (R type)	Acetic acid	≤200
Chrome-molybdenum steel (type I)	Water, steam, oil	≤550

The main part material

Body, bonnet	Valve plate, seat	Valve stem	Stem nut	filler	Handwheel
Carbon steel	High-quality carbon steel + carbide or stainless steel	Chrome stainless steel	Aluminum bronze	Graphite asbestos packing	Malleable iron
Chromium nickel titanium steel	Stainless steel, stainless steel + cemented carbide	Chrome nickel-titanium stainless steel	Aluminum bronze	Teflon	Malleable iron
Chromium nickel molybdenum titanium steel	Stainless steel, stainless steel + cemented carbide	Chrome nickel-titanium stainless steel	Aluminum bronze	Teflon	Malleable iron
Chrome-molybdenum steel	Alloy steel + Carbide	Chrome-molybdenum steel	Aluminum bronze	Flexible asbestos	Malleable iron

The main shape and connection dimensions

Nominal diameter	The main dimensions and connection dimensions
Nominal diameter	L	D	D1	D2	b	Z-d	H	D0
Z41H-16C
15	130	95	65	45	14-2	4-Φ14	170	120
20	150	105	75	55	14-2	4-Φ14	190	140
25	160	115	85	65	14-2	4-Φ14	205	160
32	180	135	100	78	16-2	4-Φ18	270	180
40	200	145	110	85	16-3	4-Φ18	310	200
50	250	160	125	100	16-3	4-Φ18	358	240
65	265	180	145	120	18-3	4-Φ18	373	240
80	280	195	160	135	20-3	8-Φ18	435	280
100	300	215	180	155	20-3	8-Φ18	500	300
125	325	245	210	185	22-3	8-Φ18	614	320
150	350	280	240	210	24-3	8-Φ23	674	360
200	400	335	295	265	26-3	12-Φ23	811	400
250	450	405	355	320	30-3	12-Φ25	969	450
300	500	460	410	375	30-3	12-Φ25	1145	580
350	550	520	470	435	34-4	16-Φ25	1280	640
400	600	580	525	485	36-4	16-Φ30	1452	640
Z41H-25
15	130	95	65	45	16-2	4-Φ14	170	120
20	150	105	75	55	16-2	4-Φ14	190	140
25	160	115	85	65	16-2	4-Φ14	205	160
32	180	135	100	78	18-2	4-Φ18	270	180
40	200	145	110	85	18-3	4-Φ18	310	200
50	250	160	125	100	20-3	4-Φ18	358	240
65	265	180	145	120	22-3	8-Φ18	373	240
80	280	195	160	135	22-3	8-Φ18	435	280
100	300	230	190	160	24-3	8-Φ23	500	300
125	325	270	220	188	28-3	8-Φ25	614	320
150	350	300	250	218	30-3	8-Φ25	674	360
200	400	360	310	278	34-3	12-Φ25	811	400
250	450	425	370	332	36-3	12-Φ30	969	450
300	500	485	430	390	40-4	16-Φ30	1145	580
350	550	550	490	448	44-4	16-Φ34	1280	640
400	600	610	550	505	48-4	16-Φ34	1452	640

Specification Applications

Industries

Oil & Gas Industry: Used in pipelines for controlling the flow of crude oil, natural gas, and other hydrocarbon products.
Power Plants: Ideal for steam and condensate systems requiring reliable shutoff at high temperatures.
Water Treatment Plants: Used to control the flow in both potable and wastewater treatment processes.
Chemical Industry: Suitable for handling a wide range of aggressive chemicals in processing applications.
HVAC Systems: Applied in heating and cooling systems for controlling the flow of water or steam.

Specific Applications

Pipeline Isolation: Used for isolating sections of piping for maintenance and safety.
Steam Lines: Suitable for high-temperature steam isolation in power generation and industrial applications.
Flow Control in Storage Tanks: Provides shutoff capabilities in storage tanks containing oil, gas, or chemicals.
Fire Suppression Systems: Used in fire mains and sprinkler systems for flow control and system isolation.

Installation Instructions

Verify the valve size, pressure rating, and material compatibility with the pipeline and medium before installation.
Ensure the pipeline is depressurized before installation to prevent accidents.
Install the valve in a fully open position to avoid damage to the gate and seat during installation.
Use appropriate sealing materials (e.g., PTFE tape or gaskets) to ensure a leak-proof connection.
Tighten flange bolts evenly to prevent distortion of the valve body.
Test the valve for proper operation after installation, including checking for any signs of leakage or misalignment.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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