HD Fire Double Interlock Pre-Action System, Electric/Electric Release
A UL Listed double interlock pre-action system in which both release signals are electric, built on HD's deluge valve Model H3 and check valve Model CH in sizes from 2 to 8 inch.

A wet system alarm check valve that holds pressurised water above its clapper, prevents reverse flow from the sprinkler piping and triggers the fire alarm when water flows. It is UL Listed, FM Approved, CE marked and made to EN 12259-2:1999.
Standards and approvals: UL Listed, FM Approved, CE Mark, EN 12259-2:1999
| Specification | 80 NB, 100 NB, 150 NB, and 200 NB |
|---|---|
| Operating Pressure | Rated for a maximum operating pressure of 17.5 Bar (250 PSI), ensuring reliable performance in demanding fire protection systems. |
| Sizes | Offered in 80 NB, 100 NB, 150 NB, and 200 NB, catering to a range of flow requirements. |
| MODEL | H |
| END CONNECTION | Flange x Flange Flange x Groove Groove x Groove |
| NOMINAL SIZE | 200, 150, 100 & 80 NB |
| MAXIMUM SERVICE PRESSURE | 250 PSI*/ 17.2 BAR |
| THREADED OPENING | BSPT |
| MOUNTING | Vertical |
| FLANGE CONNECTION | ANSI B16.42 #150 (Flange drilling matching to ANSI B 16.5#150) Standard Supply. |
| TRIM | Galvanized fittings with Brass Valves |
| FACTORY HYDROSTATIC TEST PRESSURE | 500 PSI / 34.5 BAR |
| FRICTIONAL LOSS IN TERMS OF EQUIVALENT LENGTH OF PIPE ( C-120 ) | 200 NB - 7.5 Mtrs. 150 NB - 7.0 Mtrs. 100 NB - 6.1 Mtrs. 80 NB - 4.7 Mtrs. |
| FINISH | Red RAL 3001 |
| APPROVAL | UL Listed & FM Approved |
| ORDERING INFORMATION | Specify size of valve, trim details, grooved valve pipe outside diameter. |
| REFERENCE | NFPA 13 and NFPA 25 |
Specifications as published by HD Fire. Please confirm the exact model with us before ordering.
A UL Listed double interlock pre-action system in which both release signals are electric, built on HD's deluge valve Model H3 and check valve Model CH in sizes from 2 to 8 inch.
A UL Listed double interlock pre-action system that combines an electric release signal with a pneumatic one, built on HD's deluge valve Model H3 and check valve Model CH in sizes from 2 to 8 inch.
A professionally pre-assembled and factory tested pre-action system enclosed in a free standing cabinet, for water sensitive areas that must be protected from accidental water flow into sprinkler piping. It is UL Listed and offered in single and double interlock types.
A stainless steel holding tank for the alarm valve trim that stops the sprinkler alarm from sounding during water pressure surges, used where variable pressure is expected. It is UL Listed and FM Approved for use with the HD Alarm Valve Model H.
A UL Listed single interlock pre-action system released by a dry pilot line, built on HD's deluge valve Model H3 and check valve Model CH in sizes from 2 to 8 inch.
A UL Listed single interlock pre-action system released by an electric signal, built on HD's deluge valve Model H3 and check valve Model CH in sizes from 2 to 8 inch.
A divided seat ring, rubber faced clapper alarm check valve for wet pipe sprinkler systems, which sounds electric and/or hydraulic alarms when water flows steadily into the system at the rate of one or more sprinklers.
The European Conformity edition of the AV-1-300 alarm valve in DN65, DN100, DN150 and DN200, supplied with European Conformity valve trim and used with or without the RC-1 retard chamber.
Sizes: 4”, 6”
UL Listed alarm check valve for the head of a wet sprinkler system, in 4 inch and 6 inch sizes with ANSI B16.5 flanged inlet and outlet.
A supervisory switch that monitors the open position of post indicator and butterfly control valves, with a bi-directional actuator for rising or falling flag installations.
A supervisory switch that monitors the open position of outside screw and yoke (OS&Y) gate valves, for indoor and outdoor use.
Try "landing valve", "Apollo call point", "9 kg ABC" or a model code.
No products yet. Tap "Add to quote" on any product, then send the whole list to us in one WhatsApp message.