Gate valve is a type of fluid control valve, which is used for stopping, opening and closing the flow of fluid in a pipeline. It controls the fluid flow by raising and lowering a gate that blocks or allows the flow of fluid. Gate valves are characterized by their simple structure, good sealing performance and low fluid resistance, making them suitable for pipeline systems with high pressure, large diameter, high viscosity and solid particle media.

 

However, due to the large operating torque and slow opening and closing speed, gate valves are generally less suitable for applications that required frequent operation, such as regulating the flow rate, stopping or opening, and flow control. Common application fields include petrochemicals, power generation, metallurgy, light industry, textiles, construction and other industries.
 

Gate valves are used when minimum pressure loss and a free bore is needed, When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low pressure loss, and this design makes it possible to use a pipe-cleaning pig. Gate valve is a multi-turn valve meaning that the operation of the valve is done by means of a threaded stem. As the valves had to turn multiple times to go from open to closed position, the slow operation also prevents water hammer effects.

 

 

Design and manufacture: API600, ANSI B16.34

Test and inspection: API598

Face to face dimensions: ANSI B16.10

RF and RTJ Flanged end: 2” to 24” as per ANSI B16.5, 26” to 48” as per MSS SP-44

Butt-welding end: ANSI B16.25

Other standards (DIN, BS, JIS) is also available upon request.

 

 

1.Size: 2” to 48”

2.Class: 150LB to 2500LB

3.Features: Bolted bonnet or pressure seal bonnet, outside screw and yoke, rising stem, solid wedge or flexible Wedge, threaded or welded seat ring

4.Material: Carbon steel, stainless steel, alloy steel, such as WCB, WCC, WC1, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, duplex stainless steel, Monel, Alloy 20, Al-bronze C95800, cast iron and ductile iron, etc.

5.Operation: Hand wheel, gear, pneumatic and electric actuator

 

 

Gate valves' working principle is very simple. When the valve is open, the gate is fully retracted into the valve body, allowing the fluid to flow through the valve with very little resistance. When the valve is closed, the gate is moved downward, compressing against the seats to create a tight seal and preventing the flow of fluid.

 

 

1. Effortless when opening and closing: Whether it is opened or closed, the movement direction of the gate is perpendicular to the flow direction of the medium.

2. Closed tightly: Providing a tight seal when closed, which makes them ideal for applications where a leak-free shutoff is necessary.

3. Durability: Sturdy and robust, with few moving parts, which makes them reliable and long-lasting.

4. Installed easily: The media can flow in any direction on both sides of wedge gate valve, easy to install. Both sides of the gate channel are symmetrical.

5. Versatility: Suitable for a wide range of application, from water treatment plants to oil.

 

No.	Parts	Materials
1	Body	ASTM A216 WCB
2	Seat ring	A105 + 13CR
3	Wedge	ASTM A216 WCB + 13CR
4	Stem	ASTM A182 F6
5	gasket	Stainless steel with graphite spiral wounded
6	Bonnet	ASTM A216 WCB
7	Bonnet bolt	ASTM A193 B7
8	Bonnet nut	ASTM A194 2H
9	Backseat bushing	ASTM A182 F6a
10	Stem packing	Flexible Graphite
11	Gland	ASTM A182 F6
12	Gland flange	ASTM A216 WCB
13	Gland eyebolt	ASTM A193 B7
14	Gland nut	ASTM A194 2H
15	Yoke	ASTM A216 WCB
16	Stem nut	ZCuAl10Fe3 / A439 D2
17	Hand wheel	Ductile iron
18	H.W. Lock Nut	ANSI 1020

 

Class 150

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600	750	900
NPS	2	2.1/2	3	4	5	6	8	10	12	14	16	18	20	24	30	36
L(RF)	178	191	203	229	254	267	292	330	356	381	407	432	457	508	610	711
L1(BW)	216	241	283	305	381	403	419	457	502	572	610	660	711	813	915	1016
L2(RTJ)	191	203	216	241	267	279	305	343	368	394	419	445	470	521	622	724
H(OPEN)	400	490	508	585	740	773	995	1160	1375	1569	1765	1978	2219	2611	3197	3737
W	200	200	250	300	300	350	350	400	450	500	600	600	680	750	915	915
RF(Kgs)	18	28	30	50	70	85	128	220	310	450	550	700	910	1130	2780	3700
BW(Kgs)	15	22	26	40	68	77	118	200	290	435	510	650	880	1100	2650	3520

 

Class 300

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	5	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	216	241	283	305	381	403	419	457	502	762	838	914	991	1143
L2(RTJ)	232	257	298	321	397	419	435	473	518	778	854	930	1010	1165
H(OPEN)	470	525	533	633	800	805	1024	1232	1460	1645	1841	1988	2208	2603
W	200	200	250	250	350	350	400	450	500	600	600	680	750	915
RF (Kgs)	24	44	48	73	124	144	226	350	580	715	1050	1235	1655	2320
BW (Kgs)	20	35	37	54	100	110	174	285	495	615	940	1090	1500	2100

 

Class 600

DN	50	65	80	100	150	200	250	300	350	400	450	500	660
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	292	330	356	432	559	660	787	838	889	991	1092	1194	1397
L2(RTJ)	295	333	359	435	562	664	791	841	892	994	1095	1200	1407
H(OPEN)	474	520	547	703	913	1077	1276	1490	1623	1816	2260	2260	2900
W	250	250	250	300	450	500	600	680	750	850	960	960	1100
RF (Kgs)	35	55	72	126	265	444	700	940	1310	1610	2070	2405	3810
BW (Kgs)	32	47	64	103	218	374	570	830	1012	1217	1760	2000	3200

 

Class 900

DN	50	65	80	100	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	368	419	381	457	610	737	838	965	1029	1130	1219	1321	1549
L2(RTJ)	371	422	384	460	613	740	841	968	1038	1140	1232	1334	1568
H(OPEN)	620	705	695	825	1065	1320	1540	1840	2135	2380	2580	2780	3130
W	300	350	350	400	500	600	750	850	850	960	960	1100	1100
RF (Kgs)	95	128	125	192	378	635	900	1550	2170	3070	3930	5120	7800
BW (Kgs)	80	110	105	165	330	520	730	1300	1800	2650	3400	4300	6500

 

Class 1500

DN	50	65	80	100	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	368	419	470	546	705	832	991	1130	1257	1384	1537	1664	1943
L2(RTJ)	371	422	473	549	711	841	1000	1146	1276	1407	1559	1686	1971
H(OPEN)	695	705	770	872	1092	1400	1600	1840	2025	2230	2430	2630	3130
W	400	400	400	500	600	750	850	960	960	1100	1100	1200	1200
RF (Kgs)	95	128	181	275	627	1000	2200	3300	4200	6300	7500	9000	11000
BW (Kgs)	80	110	145	220	560	850	1950	2850	3550	5500	6500	8000	9500

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