Bulletin 700 INTRODUCTION This manual has been prepared by The Reliable Automatic Sprinkler Co., Inc. to provide a comprehensive source of information that will help users select and purchase Deluge, Preaction, and Low Pressure Dry Systems for a wide variety of fire protection applications. This manual is complemented by other Reliable Automatic Sprinkler Company bulletins that provide instructions for installation, operation and maintenance of the various systems.
TABLE OF CONTENTS 1. SYSTEM DESCRIPTIONS 2.3 Pneumatic Pressure Supply Equipment 2.3.1 Air Compressor Panel 2.3.2 Air Compressor 2.3.3 Compressed Nitrogen 2.3.4 Nitrogen Generator 2.4 Pressure Maintenance Equipment 2.4.1 Model A-2 Pressure Maintenance Device 2.4.2 Model B-1 Air Maintenance Device 2.4.3 NS-Pak 2.4.4 Nitrogen Regulation Device 2.5 Pneumatic Pressure Supervision 2.5.1 Model EPS40 Pressure Switch 2.5.2 Model EPS10 Pressure Switch 2.6 Quick-Opening Device 2.6.
1. SYSTEM DESCRIPTIONS 1.1 Deluge Systems A deluge system utilizes open sprinklers or nozzles and non-pressurized system piping. When a deluge system is activated, all sprinklers or nozzles on that system flow water at the same time. Deluge systems are generally associated with high hazard occupancies that require large volumes of water.
1.1.1 Model DDX Wet Pilot Line Trim A wet pilot line is a non-electrical type of detection/release system that can be used in conditioned (i.e. freeze protected) areas. Closed sprinklers or fixed-temperature-release pilot line detectors are installed throughout the protected area on small diameter piping that contains water under pressure. The wet pilot line is an extension of the Model DDX Deluge Valve push-rod chamber.
1.1.2 Model DDX Dry Pilot Line Trim Where freezing conditions exist, or where height/distance limits of wet pilot lines are exceeded, a dry pilot line can be used. Closed sprinklers or fixed-temperature-release pilot line detectors are installed throughout the protected area on small diameter piping that contains pressurized air or nitrogen. A Model LP Dry Pilot Actuator is installed on the outlet of the Model DDX Deluge Valve push-rod chamber.
1.1.3 Model DDX Electrical Actuation Trim Where electrical actuation of the system is preferred over wet or dry pilot lines, or where otherwise required by project specifications, a listed normally-closed (de-energized) solenoid valve is installed on the outlet of the Model DDX Deluge Valve push-rod chamber. The solenoid provides a separation between the hydraulically pressurized push-rod chamber and atmospheric pressure drain tubing.
1.1.4 Model H Deluge Riser Assembly The Reliable Model H 1-1/2” (40mm) Deluge Riser Assembly is an electrically actuated system that utilizes a normally closed, quick-opening hydraulically-operated diaphragm actuated solenoid as the main system control valve. In the normal condition (de-energized), water pressure is held at the solenoid valve inlet.
1.2 Single Interlock Preaction Systems A single interlock preaction system is best described as a dry pipe system that is converted to a wet pipe system prior to activation of the sprinklers. Unlike deluge systems, preaction systems utilize closed sprinklers and piping. The closed sprinklers operate individually as needed following the actuation of the main system control valve.
1.2.1 Model DDX Wet Pilot Line Single Interlock A wet pilot line is a non-electrical type of detection/release system that can be used in conditioned (i.e. freeze protected) areas. Closed sprinklers or fixed-temperature-release pilot line detectors are installed throughout the protected area on small diameter piping that contains water under pressure. The wet pilot line is an extension of the Model DDX Deluge Valve push-rod chamber.
1.2.2 Model DDX Dry Pilot Line Single Interlock Where freezing conditions exist, or where height/distance limits of wet pilot lines are exceeded, a dry pilot line can be used. Closed sprinklers or fixed-temperature-release pilot line detectors are installed throughout the protected area on small diameter piping that contains pressurized air or nitrogen. A Model LP Dry Pilot Actuator is installed on the outlet of the Model DDX Deluge Valve push-rod chamber.
1.2.3 Model DDX Electrical Actuation Single Interlock Where electrical actuation of the system is preferred over wet or dry pilot lines, or where otherwise required by project specifications, a listed normally-closed (de-energized) solenoid valve is installed on the outlet of the Model DDX Deluge Valve push-rod chamber. The solenoid provides a separation between the hydraulically pressurized push-rod chamber and atmospheric pressure drain tubing.
1.2.4 Model H Single Interlock Preaction System The Reliable Model H 1-1/2” (40mm) Single Interlock Preaction system is an electrically actuated system that utilizes a normally closed, quick-opening hydraulically-operated diaphragm actuated solenoid as the main system control valve. When in the normal condition (de-energized) water pressure is held at the solenoid valve inlet.
1.3 Double Interlock Preaction Systems Double interlock preaction systems are designed to protect water sensitive environments where the inadvertent release of water into the protected area will result in serious disruption to critical control systems (e.g. data centers), and/or serious financial impact to business operations (e.g. freezers).
1.3.1 Model DDX Type D The Reliable Type D Double Interlock Preaction system utilizes a listed, normally closed (de-energized) electric solenoid valve on the outlet of the Model DDX Deluge Valve push-rod chamber. The solenoid provides a separation between the hydraulically pressurized push-rod chamber and atmospheric pressure drain tubing. When the programming logic of the release panel has been satisfied, the panel opens (energizes) the solenoid valve.
1.3.2 Model DDX Type F The Reliable Type F Double Interlock Preaction system utilizes a Model LP Dry Pilot Actuator downstream of a listed, normally closed (de-energized) electric solenoid valve on the outlet of the Model DDX Deluge Valve push-rod chamber. The dry pilot actuator is held closed with system pneumatic pressure, and provides a separation between the hydraulically pressurized push-rod chamber and the system pneumatic pressure.
1.3.3 Model DDX Type PL The Reliable Type PL Double Interlock Preaction system utilizes an LPDI Double Interlock Actuator on the outlet of the Model DDX Deluge Valve push-rod chamber. The lower chamber of the actuator is held closed with pneumatic pressure, and provides a separation between the hydraulically pressurized push-rod chamber and dry pilot line pneumatic pressure.
1.3.4 Model H Type D The Reliable Model H 1-1/2” (40mm) Double Interlock Preaction System Type D is an electrically actuated system that utilizes a normally closed, quick-opening hydraulically-operated diaphragm actuated solenoid as the main system control valve. In the normal condition (de-energized), water pressure is held at the solenoid valve inlet.
1.4 Non Interlock Preaction System Non-interlock preaction systems combine the operational features of a single interlock preaction system and a dry system. Non-interlock systems are fully actuated by either a signal from a detection system (same as a single interlock system) OR from loss of pneumatic pressure (same as a dry system). A solenoid valve and a Dry Pilot Actuator are connected to the Deluge Valve push-rod chamber outlet and each is piped independently to atmospheric pressure via the drain cup.
1.5 Low Pressure Dry System Low pressure dry pipe systems offer numerous advantages over conventional systems. Conventional differential dry pipe systems rely on pneumatic pressure above a pool of priming water to hold a check valve clapper closed and prevent supply water from flowing into the system. When pneumatic pressure is lost, the clapper opens, and the incoming water works against the pressurized gas as it makes its way through the system piping.
1.5.1 Reliable Model EX Dry System The Reliable Model EX Dry system utilizes a dry pilot actuator directly mounted to the push-rod chamber of a Model DDX deluge style valve. The dry pilot actuator can be held closed with pneumatic system pressure much lower than that required for a conventional dry valve, and provides a separation between the hydraulically pressurized push-rod chamber and system pneumatic pressure.
1.5.2 Reliable Model DDX-LP Dry System The Reliable Model DDX-LP Dry system utilizes a Model LP Dry Pilot Actuator as the releasing device on the outlet of the Model DDX Deluge Valve push-rod chamber. The dry pilot actuator is held closed with pneumatic system pressure much lower than that required for a conventional dry valve, and provides a separation between the hydraulically pressurized push-rod chamber and system pneumatic pressure.
1.6 PrePak & DryPak Reliable PrePaK Preaction and DryPak Low Pressure Dry systems are completely self-contained riser assemblies that can be readily installed within a small floor space. These cabinet mounted systems are substantially smaller and lighter than other manufacturer’s systems and will fit through a standard 30” wide door. Installation of the units requires three piping connections: a supply line in, a system line out, and a drain line out.
2. COMPONENT DESCRIPTIONS 2.1 Main System Control Valves Special systems, whether deluge, preaction or low pressure dry, control the release of water to the protected area until a particular condition or set of conditions is met. The main system control valve is defined as the valve which separates the pressurized water supply source from piping in the protected area. Two types of main system control valves are used for Reliable Special Systems. 2.1.
2.1.2 Model DDX The Reliable Model DDX Deluge Valve is a hydraulically-operated, differential-type, latching valve with external reset designed for use as a main system control valve in deluge, preaction and low pressure dry fire protection systems. The Model DDX Deluge Valve can be trimmed to create several types of systems by utilizing manual, hydraulic, pneumatic, or electrical actuation devices or combinations of these devices.
Figure B: DDX VALVE OPEN POSITION Alarm devices are activated via the alarm port upon flow of water into the sprinkler system piping. Once the flow of water has stopped, the clapper drops and the lever acts as a latch to prevent the clapper from returning to the closed position (Figure C). Figure C: DDX VALVE LATCHED POSITION 25.
An external reset knob on the back left hand (pushrod) side of the Model DDX Deluge Valve allows the user to reset the valve without removing the faceplate. (Figure D). It is important to note that ALL pressure must be relieved from the push rod chamber prior to resetting the valve. This can be accomplished by opening the emergency manual release valve provided on the front left of each Model DDX Deluge Valve assembly.
2.2 Releasing Devices A releasing device serves to vent hydraulic pressure from the main system control valve push-rod chamber allowing the Model DDX Deluge Valve to open and flow water into the fire protection system. They can be classified as either manual or automatic, and can be used in various combinations to achieve the desired level of operational safety. 2.2.
2.2.3 Solenoid Valve A normally closed electric solenoid valve is a primary control valve releasing device when located on the discharge outlet of the hydraulically pressurized push rod chamber of the Model DDX Deluge Valve. The solenoid valve separates water pressure in the pushrod chamber from atmospheric air pressure in a drain line.
2.3.1 Air Compressor Panel Reliable Model B-SI and C-SI Air Compressor Panels provide self-contained supervisory air supply and pressure maintenance for single interlock preaction systems* with capacity up to 200 gallons. The air source of the Model B-SI is a 120 VAC, 1/16 HP Gast air compressor; the Model C-SI is equipped with a 220 VAC, 1/16 HP Gast air compressor. A System Sensor Model EPS10-2 pressure switch monitors the system air pressure. Approximately 7 psi (0.
Figure 29 Figure 30 Figure 31 2.3.3 Compressed Nitrogen Cylinders of compressed nitrogen can provide a clean, dependable, and most importantly, dry source of pneumatic pressure in special systems. High pressure nitrogen cylinders can typically be rented from a local source, with rental fees varying by supplier and bottle size. By replacing oxygen in the system piping with nitrogen, the chemical process that results in corrosion is severely mitigated, thereby extending the life-span of steel piping.
Figure 33 MODEL A-2 Figure 34 MODEL B-1 2.4.2 Model B-1 Air Maintenance Device The Reliable Model B-1 Pressure Maintenance Device is designed for use in conjunction with a tankless air compressor that does not have a pressure control switch to maintain the correct pressure in the system. By wiring the compressor motor to the electrical pressure switch of the Model B-1 Device*, the on/off operation of the compressor is controlled directly by the pressure in the system.
2.4.4 Nitrogen Regulating Device The Reliable Nitrogen Regulating Device is used to regulate pressure to individual or multiple preaction and dry systems using Reliable Model A-2 Pressure Maintenance Devices. The nitrogen supply is obtained from a high pressure nitrogen cylinder (or cylinders) which are sold or rented separately. The Nitrogen Regulating Device includes a single stage pressure regulator equipped with high pressure inlet and low pressure outlet gauges.
2.5.2 Model EPS10 Pressure Switch The System Sensor Model EPS10 pressure switch is used for single interlock preaction systems and Reliable Type D Double Interlock Preaction Systems using pneumatic pressures between 7 psi (0.48) and 10 PSI (0.7 bar). The EPS10-1 Series (one SPDT switch) and EPS10-2 (two SPDT switches) feature field adjustable pressure sensitivity between 4 and 20 psi (0.3 and 1.4 bar) and are used for low pressure supervision.
The alarm continues to sound as long as pressurized water is in the sprinkler system and will stop when the main water supply control valve is closed. The water motor alarm may be temporarily silenced by closing the alarm control valve located in the trim of the Model DDX Deluge Valve. Model C Mechanical Alarms are self resetting after each operation, eliminating the need of removing cover plates, etc. to reset internal mechanisms.
SPECIAL SYSTEMS ORDERING GUIDE This sheet is provided to assist in the ordering of DDX special systems in This sheet is provided to assist in the ordering of DDX special systems as described in as Thedescribed Reliable Automatic Sprinkler Company Bulletin 700 The Reliable Automatic Sprinkler Company Bulletin 700 SPECIAL SYSTEM ORDERING GUIDE GENERAL INFORMATION PERSON COMPLETING THIS FORM: REPRESENTING (COMPANY): PHONE NUMBER: EMAIL ADDRESS: PROJECT NAME (OPTIONAL): STEP ONE: 3" 4" 6" 8" 2" 2.
Reliable...For Complete Protection Reliable offers a wide selection of sprinkler components. Following are some of the many precision-made Reliable products that guard life and property from fire around the clock.
