Product overview
The HD Fire Single Interlock Preaction with Dry Pilot Actuation combines an H3 deluge valve and CH check valve in the manufacturer's pre-action system arrangement. Its release configuration is single interlock, dry pilot. The published nominal sizes are 2, 3, 4, 6 and 8 inches. Select the release panel, compressor and other optional equipment as part of the complete system design.
Technical specifications
| Manufacturer | HD FIRE PROTECT |
|---|---|
| Product / system | Single Interlock Preaction with Dry Pilot Actuation |
| Product type | Water-Based Systems |
| Product family | Pre-Action Systems |
| Subcategory | Preaction |
| Release arrangement | Single interlock, dry pilot |
| Deluge valve | H3 |
| Check valve | CH |
| Nominal sizes | 2 / 3 / 4 / 6 / 8 inches |
| Connections | Grooved / flanged |
| Supply choices | Pre-assembled / loose |
| Optional equipment | Release panel, compressor, butterfly valve, air maintenance device and water motor gong |
| Manufacturer-listed approvals | UL Listed |
Approval scope applies to the listed system and component configuration. Confirm the selected equipment against the current manufacturer document and project submittal.
Key features
- Release arrangement: Single interlock, dry pilot
- Deluge valve: H3
- Check valve: CH
Applications
Pre-action sprinkler installations using the stated release arrangement. Coordinate detection, air supervision, release logic and water supply with the approved design.
Selection and project integration
Share the system drawings, protected hazard, equipment schedule and project specification with UDCT. Product selection should establish the required flow and pressure, pipework connections, materials, installation orientation and compatible components. Check the precise approval scope for the selected model, size and configuration against the current manufacturer documentation.
The product reference does not replace hydraulic calculations or the approved system design. For foam equipment, confirm the concentrate, proportioning range and discharge-device compatibility as one system. Use the manufacturer instructions for installation, commissioning and maintenance, and confirm the supplied configuration with UDCT before procurement.
Manufacturer documents
Official product reference
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