
The Reliable Model DDX-W/D Dry Pipe Valve is a hydraulically operated latch-type valve designed for use as a primary control valve in a low pressure dry pipe valve system, or an alarm valve in a wet system. The trim set used with the Model DDX-W/D Wet/ Dry Pipe Valve contains the Reliable Model LP Dry Valve Actuator releasing device, which is used in the Dry Pipe configuration. This allows the system’s air or nitrogen pressure requirement to be considerably less than the available water supply pressure.

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| Installation Dimensions in mm (inches) | ||||||||||||||||
| Valve | A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R |
|
100mm (4”) |
133 (5¼) |
171 (6¾) |
241 (9½) |
355 (14) |
603 (23¾) |
651 (25 5/8) |
1003 (39½) |
216 (8½) |
311 (12¼) |
140 (5½) |
216 (8½) |
343 (15¼) |
64 (2½) |
159 (6¼) |
133 (5¼) |
305 (13¼) |
|
150mm (6”) & 165mm |
159 (6¼) |
197 (7¾) |
267 (10½) |
406 (16) |
629 (24¾) |
702 (27 5/8) |
1048 (41½) |
216 (8½) |
311 (12¼) |
140 (5½) |
216 (8½) |
343 (16¾) |
83 (3¼) |
222 (8¾) |
127 (5) |
318 (14¾) |


This information is not intended to be used for installation purposes. We try to keep our product information up-to-date and accurate. We cannot cover all specific applications or anticipate all requirements. All specifications are subject to change without notice.
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