The opening and closing member of the Z41W stainless steel gate valve is the gate. The movement direction of the gate is perpendicular to the fluid flow direction. The gate valve can only be fully open or fully closed. It cannot be used for regulation or throttling. It is only used as an opening and closing device on pipelines to connect or shut off media in the pipeline. The gate has two sealing surfaces. The most common mode is that the two sealing surfaces of the gate valve form a wedge shape. The wedge angle varies with valve parameters, typically 5 degrees, and 2 degrees 52 minutes when the medium temperature is not high. The gate of the wedge gate valve can be made as a single piece, called a rigid gate; or it can be made as a gate capable of slight deformation to improve manufacturability and compensate for deviations in sealing surface angles during processing. This type of gate is called an elastic gate.
Features of Z41W Stainless Steel Gate Valve
1.Compact structure, reasonable design, good valve rigidity, smooth passage, and small flow coefficient.
2.The sealing surfaces are made of stainless steel and hard alloy, providing long service life.
3.Flexible graphite packing is used, ensuring reliable sealing and light, flexible operation.
4.Drive modes include manual, pneumatic, electric, and gear transmission.
5.Structure types include elastic wedge single gate, rigid wedge single gate, and double gate configurations.
Main Performance Specifications of Z41W Stainless Steel Gate Valve
| PN (MPa) |
Shell Test (MPa) |
Seal Test – Liquid (MPa) |
Seal Test – Gas (MPa) |
Back Seal Test (MPa) |
| 1.6 |
2.4 |
1.76 |
0.6 |
1.76 |
| 2.5 |
3.75 |
2.75 |
0.6 |
2.75 |
| 4.0 |
6.0 |
4.4 |
0.6 |
4.4 |
| 6.4 |
9.6 |
7.04 |
0.6 |
7.04 |
| 10.0 |
15.0 |
11.0 |
0.6 |
11.0 |
| 16.0 |
24.0 |
17.60 |
0.6 |
17.60 |
Application Range of Z41W Stainless Steel Gate Valve
| Shell Material |
Applicable Media |
Applicable Temperature °C |
| Carbon Steel (C type) |
Water, steam, oil |
≤425 |
| Chromium-Nickel-Titanium Steel (P type) |
Corrosive media |
≤200 |
| Chromium-Nickel-Molybdenum-Titanium Steel (R type) |
Corrosive media |
≤200 |
| Chromium-Molybdenum Steel (I type) |
Water, steam, oil |
≤550 |
Main Parts Materials of Z41W Stainless Steel Gate Valve
| Valve Body, Bonnet |
Gate, Seat |
Stem |
Stem Nut |
Packing |
Handwheel |
| Carbon steel |
High-quality carbon steel + hard alloy or stainless steel |
Chromium stainless steel |
Aluminum bronze |
Graphite asbestos packing |
Malleable cast iron |
| Chromium-nickel-titanium steel |
Stainless steel, stainless steel + hard alloy |
Chromium-nickel-titanium stainless steel |
Aluminum bronze |
PTFE impregnated asbestos packing |
Malleable cast iron |
| Chromium-nickel-molybdenum-titanium steel |
Stainless steel, stainless steel + hard alloy |
Chromium-nickel-molybdenum-titanium stainless steel |
Aluminum bronze |
PTFE impregnated asbestos packing |
Malleable cast iron |
| Chromium-molybdenum steel |
Alloy steel + hard alloy |
Chromium-molybdenum-aluminum steel |
Aluminum bronze |
Flexible graphite |
Malleable cast iron |
Main Dimension Table of Z41W Stainless Steel Gate Valve (PN1.0 / PN1.6)
| DN |
L |
D |
D1 |
D2 |
b |
f |
z-d |
H |
H1 |
Do |
| 15 |
130 |
95 |
65 |
45 |
14 |
2 |
4-14 |
175 |
195 |
120 |
| 20 |
150 |
105 |
75 |
55 |
14 |
2 |
4-14 |
180 |
205 |
140 |
| 25 |
160 |
115 |
85 |
65 |
14 |
2 |
4-14 |
210 |
240 |
160 |
| 32 |
180 |
135 |
100 |
78 |
16 |
2 |
4-18 |
230 |
266 |
180 |
| 40 |
200 |
145 |
110 |
85 |
16 |
3 |
4-18 |
350 |
405 |
200 |
| 50 |
230 |
160 |
125 |
100 |
16 |
3 |
4-18 |
358 |
420 |
240 |
| 65 |
290 |
180 |
145 |
120 |
18 |
3 |
4-18 |
375 |
450 |
240 |
| 80 |
320 |
195 |
160 |
135 |
20 |
3 |
8-18 |
433 |
528 |
280 |
| 100 |
350 |
215 |
180 |
155 |
20 |
3 |
8-18 |
502 |
620 |
320 |
| 125 |
400 |
245 |
210 |
185 |
22 |
3 |
8-18 |
612 |
753 |
360 |
| 150 |
480 |
280 |
240 |
210 |
24 |
3 |
8-23 |
676 |
847 |
360 |
| 200 |
600 |
335 |
295 |
265 |
26 |
3 |
12-23 |
820 |
1039 |
400 |
| 250 |
730 |
405 |
355 |
320 |
30 |
3 |
12-25 |
969 |
1245 |
450 |
| 300 |
850 |
460 |
410 |
375 |
30 |
3 |
12-25 |
1142 |
1472 |
560 |
| 350 |
980 |
520 |
470 |
435 |
34 |
3 |
16-25 |
1280 |
1650 |
640 |
| 400 |
1100 |
580 |
525 |
485 |
36 |
4 |
16-30 |
1452 |
1887 |
640 |
| 450 |
1200 |
640 |
585 |
545 |
40 |
4 |
20-30 |
1541 |
2011 |
720 |
| 500 |
1250 |
705 |
650 |
608 |
44 |
4 |
20-34 |
1676 |
2181 |
720 |
| 600 |
1450 |
840 |
770 |
718 |
48 |
5 |
20-41 |
1810 |
2440 |
800 |
Main Dimension Table of Z41W Stainless Steel Gate Valve (PN2.5)
| DN |
L |
D |
D1 |
D2 |
b |
f |
z-d |
H |
H1 |
Do |
| 15 |
130 |
95 |
65 |
45 |
16 |
2 |
4-14 |
175 |
195 |
120 |
| 20 |
150 |
105 |
75 |
55 |
16 |
2 |
4-14 |
180 |
205 |
140 |
| 25 |
120 |
115 |
85 |
65 |
16 |
2 |
4-14 |
210 |
240 |
160 |
| 32 |
140 |
135 |
100 |
78 |
18 |
2 |
4-18 |
230 |
266 |
180 |
| 40 |
240 |
145 |
110 |
85 |
18 |
3 |
4-18 |
350 |
405 |
200 |
| 50 |
250 |
160 |
125 |
100 |
20 |
3 |
4-18 |
358 |
420 |
240 |
| 65 |
270 |
180 |
145 |
120 |
22 |
3 |
4-18 |
375 |
450 |
240 |
| 80 |
280 |
195 |
160 |
135 |
22 |
3 |
8-18 |
433 |
528 |
280 |
| 100 |
300 |
230 |
190 |
160 |
24 |
3 |
8-18 |
502 |
620 |
320 |
| 125 |
325 |
270 |
220 |
188 |
28 |
3 |
8-18 |
612 |
753 |
360 |
| 150 |
350 |
300 |
250 |
218 |
30 |
3 |
8-23 |
676 |
847 |
360 |
| 200 |
400 |
360 |
310 |
278 |
34 |
3 |
12-23 |
820 |
1039 |
400 |
| 250 |
450 |
425 |
370 |
332 |
36 |
3 |
12-25 |
969 |
1245 |
450 |
| 300 |
500 |
485 |
430 |
390 |
40 |
3 |
12-25 |
1142 |
1472 |
560 |
| 350 |
550 |
550 |
490 |
448 |
44 |
3 |
16-25 |
1280 |
1650 |
640 |
| 400 |
600 |
610 |
550 |
505 |
48 |
4 |
16-30 |
1452 |
1887 |
640 |
| 450 |
650 |
640 |
585 |
545 |
48 |
4 |
20-30 |
1541 |
2011 |
720 |
| 500 |
700 |
705 |
650 |
608 |
54 |
4 |
20-34 |
1676 |
2181 |
720 |
| 600 |
800 |
840 |
770 |
718 |
56 |
5 |
20-41 |
1810 |
2440 |
800 |
