Gate Valve

SLAB GATE VALVE

　　The slab-gate non-rising-stem gate valves manufactured by Yancheng Wellhead Petrochemical Machinery Co., Ltd. are available in temperature classes L, P, R, S, T, and U specified in API 6A. Gate valves to be used in the 350℉ or 650℉ high temperature can be supplied on request. Fire-proof gate valves also can be supplied to API 6A. Gate valves manufactured by our company are available in pressure ratings ranging from 2000psi, 3000psi, 5000psi, 10000psi and 15000psi, material classes from AA through FF, product specification levels (PSL) from 1 through 3 and performance requirement (PR) 1.
Features:
Simple structure and renewable gate and seat assembly.
One-piece and double-acting gate with long service life.
Both thrust bearings with large load capacity and composite rubber-plastic stem lip packing minimize operational torque.
Bearing cap is provided with a grease cup to make it easy to inject lubricating grease in the field.
Threaded packing gland allows removal of bearings and stem packing under line pressure.
Both the bolted bonnet and modern bonnet seal ring provide simple structure and reliable sealing.
The sealing surfaces of the gate and seat are hardfaced for wear and corrosion resistance.
Wave springs are installed between the body and seat and between the gate and seat. The gate and seat still maintain a positive metal to metal sealing under low pressure.
Floating gate design requests the hand wheel to be backed off 1/4 turn after its rotation can go no further.

Parts List:

Item	Component	Qty	Material	Remark
1	Body	1	4130
2	Bonnet Seal Ring	1	1010
3	Gate	1	4130
4	Gate T-Nut	1	5140
5	Bonnet	1	4130
6	Stem Lip Packing	2	NBR
7	Packing Ring	3	410
8	Packing Gland	1	4130
9	Bonnet Stud	8	4130
10	Bonnet Nut	8	5140
11	Bearing	2	Assy.
12	Stem	1	410
13	Split Bushing	1	5140
14	Bearing Cap	1	5140
15	O-Ring	1	NBR
16	Handwheel	1	1035
17	Washer	1	1035
18	Screw	1	1035
19	Oil Cup	1	Assy.
20	Grease Fitting	1	Assy.
21	O-Ring	4	NBR
22	Seat	2	4130
23	Wave Spring	2	410

GATE VALVE

　　Rising stem slab gate valves manufactured by Yancheng Wellhead Petrochemical Machinery Co., Ltd. are available in temperature classes L, P, R, S, T, and U specified in API 6A. Gate valves to be used in the 350℉ or 650℉ high temperature can be supplied on request. Fire-proof gate valves also can be supplied to API 6A. Gate valves manufactured by our company are available in 2000psi, 3000psi, 5000psi, 10000psi and 15000psi working pressure, material classes from AA through FF, product specification levels (PSL) from 1 through 3 and performance requirement (PR) 1.
The rising stem slab gate valves manufactured by our company have the same characters as the non-rising stem slab gate valves. For it is designed by rising stem, the close and open of the valves is completely controlled .
Note:
Under pressure, the valve is forbidden to be semi-shrouded, for it will do great harm to the gate valve and great reduce the service life of the valve.

Parts List:

Item	Component	Qty	Material	Remark
1	Body	1	4130
2	Bonnet Seal Ring	1	1010
3	Gate	1	4130
4	Seat	2	4130
5	O-Ring	4	NBR
6	Wave Spring	2	410
7	Bonnet Stud	8	4130
8	Stem	1	410
9	Grease Fitting	1	Assy.
10	Bonnet	1	4130
11	Bonnet Nut	8	5140
12	Stem Lip Packing	2	NBR
13	Packing Ring	3	410
14	Packing Gland	1	4130
15	Bearing	2	Assy.
16	Stem Nut	1	4130
17	O-Ring	1	NBR
18	Oil Cup	1	Assy.
19	Bearing Cap	1	5140
20	Handwheel	1	1035
21	Stem Protector	1	1035

HYDRAULIC GATE VALVE

　　The hydraulic gate valves manufactured by our company are widely used in the automatic control systems and remote control systems, featuring the hydraulically controlled opening and closing, stable performance and easy operation.
Main specifications and technical parameters
Rated pressure: 2000psi～15000psi
Nominal size: 1-13/16″-4-1/16″
Working temperature: P U
PR: 1-2
PSL: 1-3
MC: AA-FF
OP: 107～1500psi

Parts List:

Item	Component	Qty	Material	Remark
1	Body	1	4130
2	Gate	1	4130
3	Seat	2	4130
4	Wave Spring	2	410
5	O-Ring	4	NBR
6	Bonnet Stud	8	4130
7	Stem	1	410
8	Bonnet	1	4130
9	Packing Gland	1	4130
10	Lock Screw	20	1035
11	Lower Gland	1	4130
12	O-Ring	2	NBR
13	O-Ring	2	NBR
14	Cylinder	1	4130
15	Piston	1	4130
16	Lock Nut	1	5140
17	Upper Gland	1	4130
18	Indicator Rod	1	410
19	Stem Protector	1	1035
20	O-Ring	2	NBR
21	O-Ring	2	NBR
22	O-Ring	2	NBR
23	O-Ring	2	NBR
24	Plug	2	1045
25	Bonnet Nut	8	5140
26	Packing Ring	2	410
27	Stem Lip Packing	5	NBR
28	Grease Fitting	1	Assy.

EXPANDING GATE VALVE

★Platic/chevron packing stays clean and free from contaminants to reduce maintenance costs.
★Tight mechancial seal is assured with parallel expanding gate design.
★This design provide stimultaneous upsteam and down steam sealing which is not affected by pressure fluctuation and vibration.
★A double row roller thrust bearing on the stem makes operation easy,even under fullpressure.
Size: 2-1/16”, 2-9/16”

Working Pressure:3000psi,5000psi

Level:AA,PU,PSL1(PSL2),PR1

PARTS LIST：

Item	Component	Qty	Material	Remark
1	Handwheal Nut	1	Steel
2	Handwheal	1	Steel
3	Look Nut	1	Steel
4	Bearing Rtainer Nut	1	Steel
5	Space Sleeve	1	Steel
6	Thrust Bearing	2	Steel
7	Stem	1	410
8	Retainer Bushing	1	Steel
9	Packing Set1	1	TFLON
10	Packing Set2	1	TFLON
11	Packing Set3	1	TFLON
12	Bonnet Stud Nut	8	4140
13	Bonnet Stud	8	1045
14	Grease Fitting	1	Assy.
15	Packing Fitting	1	Assy.
16	Bonnet	1	4130
17	Seat	1	Steel
18	Seat Insert	1	TFLON
19	Gate Guide	2	4130
20	Spring	2	Steel
21	Spring Pin	6	Steel
22	Bonnet Gasket	1	Steel
23	Gate Segment	1	4130
24	Gate	1	4130
25	Body	1	4130
26	Body Grease Fitting	2	Assy.