Ductile Iron Straight Through Type Diaphragm Valve
Specifications
Design Standard |
BS 5156, DIN 3202 |
End Flange Standard |
EN 1092 PN10/16, ANSI 150LB, JIS B2220 10K, AS 2129 |
Test Standard |
API 598 |
Temperature |
-20℃~120℃(depends on the diaphragm material) |
Valve Type |
Straight through type |
Rubber Type |
Rubber lined & unlined |
Body Material |
Ductile Iron |
Rubber Material |
NR, EPDM, NBR, CR, CSM, VITON, PTFE |
Diaphragm Material |
NR, EPDM, NBR, CR, CSM, VITON, PTFE |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Application |
Water, Mining, Chemical, Manufacturing |
Dimension
Size |
H1 |
ФD |
L |
f |
DN25 |
152 |
117 |
127 |
3 |
DN32 |
152 |
115 |
146 |
3 |
DN40 |
152 |
140 |
159 |
3 |
DN50 |
163 |
155 |
190 |
3 |
DN65 |
205 |
185 |
216 |
3 |
DN80 |
220 |
191 |
254 |
3 |
DN100 |
262 |
229 |
305 |
3 |
DN125 |
290 |
250 |
356 |
4 |
DN150 |
368 |
280 |
406 |
4 |
DN200 |
410 |
340 |
521 |
4 |
DN250 |
559 |
395 |
635 |
5 |
DN300 |
625 |
445 |
749 |
5 |
The straight-through diaphragm valve is characterized by a full-bore, unobstructed flow path that minimizes pressure drop and enables bidirectional operation. Its self-draining, flat-body design with rubber lining makes it particularly effective for handling abrasive slurries, viscous fluids, powders, and aggressive chemicals where particulate buildup is a concern. Unlike weir-type designs, it provides superior handling of solids and fibrous media. The operational requirement for an extended diaphragm stroke restricts material selection to flexible elastomers, which increases diaphragm wear and limits high-temperature applicability. This configuration is specifically engineered for demanding services in mining, wastewater treatment, and pulp and paper processing.