API594 Dual Plate Wafer Check Valve | Ductile Iron Body, CF8M Disc
Features
Leakage Level |
Bubbles-tight sealing with no leakage |
Low Flow Resistance |
Improve fluid efficiency and reduce energy consumption |
Valve Design |
Small size & light weight |
Easy Install |
Either vertically or horizontally installed |
Compact Structure |
Quick and automatic closure via torsion spring |
Applicable Medium |
Water, drink water, oil, gas, seawater, neutral liquid, etc |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Certificates |
ISO9001, CE, WRAS, ACS |
Specifications
Design Standard |
API 594 |
End Flange Standard |
ANSI 125LB/150LB |
Face to Face Dimension |
API594 125# / 150# |
Testing Standard |
API 598 |
Temperature |
-20℃~160℃ (depends on the sealing material) |
Body Material |
Ductile Iron ASTM A536 65-45-12 / ASTM A395 60-40-18 |
Disc Material |
Stainless Steel CF8M |
Shaft Material |
Stainless Steel SS316 |
Seat Material |
EPDM, NBR, WRAS EPDM, VITON, Silicone |
Spring Material |
SS316, Inconel X-750 |
Dimension
|
Size |
L |
Ф D |
Ф D1 |
|||||
|
EN558-1 Series 16 |
API594 125LB |
API594 150LB |
PN10 |
PN16 |
API594 125/150LB |
EN558-1 Series 16 |
API594 125/150LB |
|
|
DN50 |
43 |
54 |
60 |
108 |
103 |
65.5 |
65 |
|
|
DN65 |
46 |
60 |
67 |
128 |
122 |
78.5 |
78 |
|
|
DN80 |
64 |
67 |
73 |
143 |
135 |
94.5 |
94 |
|
|
DN100 |
64 |
67 |
73 |
163 |
173 |
116.7 |
117 |
|
|
DN125 |
70 |
83 |
83 |
193 |
195 |
145.5 |
145 |
|
|
DN150 |
76 |
95 |
98 |
219 |
221 |
170.5 |
171 |
|
|
DN200 |
89 |
127 |
127 |
271 |
278 |
224 |
224 |
|
|
DN250 |
114 |
140 |
146 |
329 |
338 |
265.5 |
276 |
|
|
DN300 |
114 |
181 |
181 |
377 |
385 |
408 |
310.5 |
328 |
|
DN350 |
127 |
184 |
184 |
439 |
445 |
449 |
360 |
375 |
|
DN400 |
140 |
191 |
191 |
490 |
496 |
513 |
410 |
416 |
|
DN450 |
152 |
203 |
203 |
540 |
557 |
548 |
450 |
467 |
|
DN500 |
152 |
213 |
219 |
595 |
616 |
605 |
505 |
514 |
|
DN600 |
178 |
222 |
222 |
697 |
736 |
716 |
624 |
616 |
|
DN700 |
229 |
305 |
305 |
812 |
806 |
830 |
720 |
720 |
|
DN800 |
241 |
305 |
305 |
919 |
913 |
938 |
825 |
|
|
DN900 |
241 |
368 |
368 |
1019 |
1013 |
1046 |
925 |
|
Frequently Asked Questions
Everything you need to know about double eccentric butterfly valves, including design features, materials, applications and performance.
What is a dual plate wafer check valve?
A dual plate wafer check valve is a non-return valve using two spring-loaded plates to allow flow in one direction and prevent reverse flow. Its wafer body provides a compact installation design.
What is the advantage of dual plate construction?
The two plates have a relatively small closing travel and are assisted by springs, allowing fast closure and helping reduce reverse flow and pressure surges.
Is the ductile iron body suitable for industrial applications?
Yes. Ductile iron provides good strength and cost efficiency and is widely used for water, HVAC, and general industrial valve bodies. The suitability depends on the pressure, temperature, medium, and applicable material requirements.
What is the difference between a dual plate check valve and a swing check valve?
A dual plate check valve uses two spring-loaded plates and normally has a shorter face-to-face dimension. A swing check valve uses a single disc that swings around a hinge. The appropriate design depends on flow conditions, installation space, pressure drop, and application requirements.
Can the valve be installed vertically?
Many dual plate check valves can be installed in either horizontal or vertical pipelines, but the allowable orientation depends on the specific design, spring configuration, flow direction, and manufacturer requirements.
