Technical data

Single Interlock Riser Installation

The recommended sequence of installation is as follows

(refer to Figures 2 and 3):

1. Install the Deluge Riser Assembly portion in ac-

cordance with Bulletin 507, “Model H Deluge Riser

Assembly.

2. Install the Model G Right Check™ Valve above the

Model H Riser Assembly using threaded/grooved

reducers and rigid grooved couplings supplied

with the Preaction Trim Kit.

3. Connect the bypass drain line between the 1 NPT

(R1) port on the Right Check™ Valve and the

Model H Riser Assembly after removing its ¾” NPT

(R¾) plug. Follow instructions provided in the Pre-

action Trim Kit.

4. Connect the air supply line form the Reliable Air

Maintenance Device (Model B-SI Compressor

Panel, Model C-SI Compressor Panel, NS-PaK or

Model A-2 AMD) to the ½” NPT (R 1/2) port on the

Right Check

Valve.

Maintenance

The Reliable Single Interlock System and associated

equipment shall periodically be given a thorough inspection

and test. NFPA 25, Inspection, Testing and Maintenance

of Water Based Fire Protection Systems, provides mini-

mum maintenance requirements. A single interlock system

should be tested, operated, cleaned and inspected at least

annually, and parts replaced as required. Refer to Bulletin

507 for information regarding maintenance of the solenoid

valve and the manual emergency station valve. Bulletin 254

provide information on the Reliable Air/Nitrogen Automatic

Pressure Maintenance Devices. Bulletin 806 describes the

Model G Right Check™ Valve.

Figure 4 — Single Interlock Preaction System