Quick Closing Valves

 

Greenwood Quick Closing Valves consist of a WCB-grade cast carbon steel body, 316 stainless steel trim, 17-4PH shaft material, and graphite cover gasket and shaft packing. Alternative methods of construction, available upon request.

 

Greenwood Valve Catalog

 

Rugged Construction - Easy Operation

All manufactured parts are produced on CNC machines to fabrication drawings produced on a CAD system. Stringent quality control is essential at every step of the manufacturing process.

Every valve is tested to API standard No. 598 and issued a serial number.

Self Closing Sample Valves

Normally installed in a horizontal or down-flow position, Greenwood Valves remain in an open mode. The fusible link assembly holds the disc up out of the material flow until an emergency arises. Upon release, the spring-assisted handle & shaft assembly rotate the disc into the flow of the material. Pressure from the material flow compliments the spring assembly to insure a positive seal between the disc and seat.

After emergency conditions are resolved, the internal relief valve helps to equalize the line pressure when the external handle is reset to its normally open position. The fusible link and other optional electric or pneumatic release devices are then placed into service.

   
Dimensions

Valve Size
Valve Class PSI
Connection Type
Face to Face
Actuator Clearance
Shaft Cover Clearance
Bonnet Clearance
Approximate Weight
2 in
150, 300, 600
Flanged
9 1/2 in
13 in
5 in
5 in
45
2 in
900
Flanged
13 1/2 in
13 in
5 in
6 in
80
3 in
150, 300
Flanged
12 1/2 in
14 in
6 1/2 in
6 1/2 in
80
3 in
600, 900
Flanged
15 in
14 in
6 in
8 in
115
4 in
150, 300
Flanged
15 in
17 in
8 in
10 in
200
4 in
400, 600
Flanged
16 in
17 in
8 in
10 in
210
4 in
900
Flanged
16 5/8 in
17 in
8 in
10 in
215
6 in
150, 300
Flanged
17 1/2 in
20 in
11 in
10 in
300
6 in
400, 600
Flanged
18 1/2 in
20 in
11 in
10 in
320
8 in
150, 300
Flanged
20 in
21 in
12 in
12 in
410
8 in
600
Flanged
21 5/8 in
21 in
12 in
12 in
440
10 in
150, 300
Flanged
24 1/2 in
21 in
13 in
13 in
750
12 in
150, 300
Flanged
26 in
24 in
14 in
13 in
920
14 in
150, 300
Flanged
31 1/4 in
25 in
15 in
16 in
1380
16 in
150, 300
Flanged
34 3/8 in
30 in
18 in
20 in
2700
18 in
150, 300
Flanged
36 in
26 in
16 in
19 in
2750
24 in
150
Flanged
29 in
29 in
19 in
20 in
3750


Notes: Clearance dimensions approximate. Consult factory for further information. Dimensions are for fusible link only models. Optional release mechanisms, actuators, limit switches and other accessories will increase clearances required. Consult factory for specific models and configurations.