Wedge Gate Valve

Material:Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance), Cast Iron

Size Range:2″ to 48″ (DN50-DN1200)

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

Gate valves are used to completely shut off or allow full flow in a pipeline. They are commonly used when a straight-line flow of fluid and minimum flow restriction are required. The gate valve operates by lifting a gate (wedge) out of the path of the fluid, providing a full, unrestricted flow when open. Made from high-quality materials including carbon steel, stainless steel, and cast iron, these valves are designed to provide durability, corrosion resistance, and reliable service across variaous industrial applications.

Product Features

◇ Design

Tanggong gate valves are engineered and manufactured for maximum service life and reliability. All valves comply with international standards, including API 1600 & API 6D by the American Petroleum Institute, BS 1414 and BS EN1984 by British Standards, and ASME B16.34 by the American Society of Mechanical Engineers. Each valve consists of a fully assembled body, bonnet, and internal components.

◇ Range of Materials

Body and bonnet materials are available in nine grades covering carbon steel, low alloy steel, and stainless steel. For special service conditions, other grades of alloy and stainless steel can be selected. A wide variety of trim, packing, and gasket materials are available to accommodate different operating environments.

◇ Available Modifications for Trademark Cast Valves

Trim modifications
End connection changes
Packing and gasket changes
Operator mounting options
Handwheel extensions
Pressure equalization
Bypass system integration
Custom casting requirements
Weld end bore customization (e.g., flange hole pattern)
Oxygen and chlorine cleaning & packaging

Key Construction & Features

No.	Feature	Optimised Description
1	Operating System	Large handwheels provide smooth and easy manual operation. Gear operators, electric actuators, pneumatic or hydraulic actuators are available for demanding service conditions and large valve sizes.
2	Live Load Packing	Live-loaded packing is designed for services with frequent cycling or high pressure and temperature fluctuations. Belleville springs maintain constant packing stress, extending service life and reducing maintenance frequency.
3	Outside Screw & Yoke (OS&Y)	Cast steel outside screw and yoke design with the yoke integrally cast with the bonnet. Suitable for 150Lb–8″, 300Lb–8″, 600Lb–8″, and 900Lb–4″ and smaller valves, ensuring clear stem position indication and reliable operation.
4	Bonnet Connection (BB / Pressure Seal)	Bolted bonnet, welded bonnet, or pressure seal bonnet options are available. Pressure seal bonnets are recommended for applications with high pressure, high temperature, or frequent cycling.
5	End Connections	Available with flanged ends, RTJ flanges, or butt-weld ends to suit different piping systems and installation requirements.
6	Yoke Sleeve	Extended yoke sleeve design provides increased thread engagement between the stem and yoke sleeve, improving load distribution and service life. Rolling bearing yokes are standard for larger sizes such as 150Lb–12″, 300Lb–10″, 600Lb–6″, and 900/1500/2500Lb–4″.
7	Lantern Ring & Double Packing	Optional lantern ring with leak-off connection and double packing arrangement is available for critical or hazardous services to enhance sealing reliability.
8	Body-to-Bonnet Joint	Flat face gasket joints are used for 150Lb valves. Male and female joints are applied for 300Lb–600Lb valves. Ring joint connections are used for 900Lb and higher pressure class valves.
9	Stem Design	All wedge gate valves use a forged T-head stem. The T-head forging strengthens the stem-to-wedge connection, allows self-alignment of the wedge, and prevents stem bending or jamming during operation.
10	Wedge Design	Integral guide rib faces ensure accurate self-centring of the wedge. Flexible wedge gate valves are available with solid wedge, split wedge, or flexible wedge designs, suitable for a wide range of operating conditions.

Specification Parameters

Performance Parameters

No.	Project Name	150Lb	300Lb	600Lb	900Lb	1500Lb	2500Lb
1	Nominal Pressure (MPa)	2.0	5.0	10.0	15.0	25.0	45.0
2	Shell Test Pressure (MPa)	3.0	7.5	15.0	22.5	37.5	67.5
3	High-Pressure Sealing Test Pressure (MPa)	2.2	5.5	11.0	16.5	27.5	49.5
4	Maximum Working Pressure (MPa)	≤2.0	≤5.2	≤10.4	≤15.6	≤25.8	≤45.8

Product Specifications

Design Standard	Structure Length	Connection Flange	Test & Inspection	Pressure & Temperature Reference
API 600	ASME B16.10	ASME B16.5	API 598	ASME B16.34

Main Components Material

Part Name	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Body	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Valve Cover	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Valve Plate	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Sealing Face	2Cr13	STL	304+STL	Base+STL	Base+STL	Base+STL
Stem	A182 F6a	A182 F11	A182 F304	A182 F304L	A182 F304	A182 F316L
Gasket	Graphite + 304 SS	Graphite + 304 SS	Graphite + 304 SS	Graphite + 304 SS	Graphite + 304 SS	Graphite + 304 SS
Bolt	A193 B7	A193 B7	A193 B8	A193 B8M	A193 B8	A193 B8M
Nut	A194 2H	A194 6	A194 8	A194 8M	A194 8	A194 8M

Operating Conditions

Applicable Temperature Range:
-29°C ~ +425°C (WCB)
-46°C ~ +425°C (CF8/CF8M/CF3/CF3M)
Suitable Media:
Water, steam, oil, nitric acid, acetic acid, oxidizing media, corrosive media

Z40H, Z40Y, Z40W (Class 150 – 2500) ANSI Wedge Gate Valve

Dimensional Data (in mm)

DN	DN/in	L	D	D1	D2	b	z × Φd	H ≈	D0 ≈	Weight (kg)
15	1/2″	108	90	60.5	35	12	4 × Φ15	188	90	–
20	3/4″	117	100	70	43	12	4 × Φ15	202	90	–
25	1″	127	110	79.5	51	12	4 × Φ15	225	100	–
32	1¼”	140	115	89	64	13	4 × Φ15	252	100	–
40	1½”	165	125	98.5	73	15	4 × Φ15	277	140	–
50	2″	178	150	120.5	92	16	4 × Φ19	323	200	23
65	2½”	190	180	139.5	105	18	4 × Φ19	347	250	32
80	3″	203	190	152.5	127	19	4 × Φ19	383	250	40
100	4″	229	230	190.5	157	24	8 × Φ19	457	300	63
125	5″	254	255	216	185.7	24	8 × Φ22	532	300	66
150	6″	267	280	241.5	216	26	8 × Φ22	635	350	110
200	8″	292	345	298.5	270	29	8 × Φ22	762	350	171
250	10″	330	405	362	324	31	12 × Φ25	940	400	263
300	12″	356	485	432	381	32	12 × Φ25	1080	500	346
350	14″	381	535	476	413	35	12 × Φ29	1295	500	463
400	16″	406	595	540	470	37	16 × Φ29	1435	600	621
450	18″	432	635	578	533.4	40	16 × Φ32	1626	650	814
500	20″	457	700	635	584	43	20 × Φ32	1829	650	992
600	24″	508	815	749.5	692	48	20 × Φ35	2175	700	1240
750	30″	610	985	914.5	857	75	28 × Φ35	2692	700	2272
800	32″	660	1060	978	914.4	81	28 × Φ41	3281	740	2840
900	36″	711	1170	1085.9	1022	90	32 × Φ41	3721	–	3310

Dimensions Data – Class 300

DN	DN/in	L	D	D1	D2	b	z × φd	H≈	D0≈	Weight (kg)
15	1/2	140	95	66.5	35	15	4 × φ15	155	100	3.7
20	3/4	152	115	82.5	43	16	4 × φ19	160	100	4.3
25	1	165	125	89	51	18	4 × φ19	186	125	7.1
32	1 1/4	178	135	98.5	63	19	4 × φ19	216	160	9
40	1 1/2	190	155	114.5	73	21	4 × φ22	250	160	13.1
50	2	216	165	127	92	22	8 × φ19	330	250	30
65	2 1/2	241	190	149	105	25	8 × φ22	368	250	36
80	3	283	210	168.5	127	29	8 × φ22	394	300	61
100	4	305	255	200	157	32	8 × φ22	473	300	77
125	5	381	280	235	186	35	8 × φ22	660	350	106
150	6	403	320	270	216	37	12 × φ22	711	350	153
200	8	419	380	270	41	41	12 × φ25	813	400	286
250	10	457	445	387.5	324	48	16 × φ29	1003	500	412
300	12	502	520	451	381	51	16 × φ32	1137	600	576
350	14	762	585	514.5	413	54	20 × φ32	1489	600	886
400	16	838	650	571.5	470	57	20 × φ35	1581	650	1175
450	18	914	710	628.5	533	60	24 × φ35	2017	838	1301
500	20	991	775	686	584	64	24 × φ35	2228	889	1672
600	24	1143	915	813	692	70	24 × φ41	2650	1092	2562

Dimensions Data – Class 600

DN	DN/in	L	D	D1	D2	b	z × φd	H≈	D0≈	Weight (kg)
15	1/2	165	95	66.5	35	22	4 × φ15	155	100	3.8
20	3/4	190	120	82.5	43	23	4 × φ19	160	100	5.4
25	1	216	125	89	51	25	4 × φ19	186	125	7.6
32	1 1/4	229	135	98.5	63	28	4 × φ19	216	160	10
40	1 1/2	241	155	114.5	73	30	4 × φ22	250	160	15
50	2	292	165	127	92	33	8 × φ19	510	254	40
65	2 1/2	330	190	149	100	36	8 × φ22	554	254	60
80	3	356	210	168	127	39	8 × φ22	595	305	80
100	4	432	275	216	157	45	8 × φ25	712	356	145
125	5	508	330	266.5	186	52	8 × φ29	826	406	236
150	6	559	355	292	216	55	12 × φ29	995	508	309
200	8	660	420	349	270	63	12 × φ32	1157	610	522
250	10	787	510	432	324	71	16 × φ35	1373	686	779
300	12	838	560	489	381	74	20 × φ35	1603	686	1108
350	14	889	605	527	413	77	20 × φ38	1930	762	1503
400	16	991	685	603	470	84	20 × φ41	2032	889	1939
450	18	1092	745	654	533	90	20 × φ44	2266	889	2733
500	20	1194	815	724	584	96	24 × φ45	2591	1118	3214
600	24	1397	940	838	692	109	24 × φ52	3124	1118	4177

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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Wedge Gate Valve

Wedge Gate Valve

Product Overview

Product Features

◇ Design

◇ Range of Materials

◇ Available Modifications for Trademark Cast Valves

Key Construction & Features

Specification Parameters

Performance Parameters

Product Specifications

Main Components Material

Operating Conditions

Z40H, Z40Y, Z40W (Class 150 – 2500) ANSI Wedge Gate Valve

Dimensional Data (in mm)

Dimensions Data – Class 300

Dimensions Data – Class 600

Specification Applications

Industries

Specific Applications

Installation Instructions

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Flow Control

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