ELECTRICAL ACTUATOR - STANDARD
The Electrical Actuator is used to electrically operate the pilot cylinder. The actuator is operated at 24Vdc. (Current consumption - 0.25 Amps). Provision is made for the connection of a manual actuator to the top of the actuator assembly.
The electrical actuator has a life span of 10 years or 25 years from manufacture after which it must be replaced. The date of replacement is indicated on the unit’s label.
LOCAL MANUAL ACTUATOR
The local manual actuator is used to mechanically operate the system at the container position and is fitted to the top of the valve assembly or electrical actuator. When fitting it is only necessary for the unit to be hand-tight.
Accidental manual release is prevented by means of a steel safety pin. The steel safety pin must be removed to allow the use of the local manual actuator.
The pneumatic actuator is used where container operation is required by means of gas pressure from the system master container or from a pilot cylinder, via small bore piping or flexible hose. The actuator is fitted to the top of the valve assembly or electrical actuator, it is only necessary for the unit to be fitted hand-tight.
Connection to the actuator is ¼ in. NPT.
The Discharge Nozzles are available in a 180º and 360º pattern and are designed to uniformly distribute Novec 1230 throughout the hazard area. The aim of the nozzles is to be clearly indicated on the approved drawing.
The 180º type has seven ports and the 360º type has sixteen ports.
Engineered nozzles are available in six sizes and are drilled with the specific design requirement.
Maximum coverage height for the nozzles is 4.3 metres.
All nozzles with an orifice area less than 7mm2, (equivalent to a drill size of less than 3mm), are required to have an additional nozzle filter to protect the nozzle from blockage (ordered separately).
Where the size of any hazard enclosure determines that one nozzle does not provide coverage within the above parameters the hazard should be theoretically sub-divided into appropriately sized modules.
Nozzles should be located no more than 300 mm below ceilings. The 180° pattern nozzle should be located no more than 300 mm from the wall.
Nozzles are provided in aluminium and brass as standard, but are available in stainless steel to order.
Manifolds are designed to enable all the containers in a row to be connected to the supply pipe and may be used in simple multi container applications or main and reserve systems.
For ease of assembly flanged manifolds are available for
150 mm diameter.
The 65mm, 80mm and 100mm manifolds are pressure tested to 90 bar, whereas the 150mm manifolds are pressure tested to 51 bar
Manifolds are made to order but typical arrangements are as described below.
65mm, 80mm and 100mm manifolds with either 2, 3, 4, 5 or 6 ports are supplied as a one piece assembly. Whilst manifolds with 7, 8, 9 or 10 ports are made up from smaller sections due to the size and weight.
For the 65mm, 80mm and 100mm manifolds, the part numbers indicated only include the manifold.
150mm flanged manifolds with either 3 or 4 ports are supplied as a one piece assembly. Whilst manifolds with 5, 6, 7, 8, 9 or 10 ports are made up from smaller sections due to the size and weight.
150mm flanged manifolds use DN150 300lb carbon steel A105 flanges, and the mating pipework connection must be suitable for the manifold flange.
For the 5, 6, 7, 8, 9 and 10 port 150mm manifolds, the part numbers indicated include the manifold, gaskets, studs, nuts, bolts and washers to enable the sections to be assembled. For all the manifolds the mating flange at the end of the manifold where it attaches to the pipe work is supplied without gaskets or bolts.
The selector valves enable one bank of containers to distribute the stored Novec 1230 agent to a number of separate risk areas. When using a selector valve in the pipe line, consideration must be given to the safe release of gas that may be trapped in the manifold. This may be accomplished with either a pressure relief valve or a burst disc. The selector valves can be closed manually by using a spanner. All the selector valves are equipped with double acting pneumatic actuators, limit switches, 24v solenoid, and supplied with a 300bar pressure regulator set at 7bar.
The solenoid is only used when the selector valve uses pneumatic actuation from the discharge pipe work. When pneumatic actuation
The flexible discharge hose connects the container to the check valve on the manifold. Discharge hoses are generally used for multiple container installations and allow containers to be disconnected for maintenance or recharge without dismantling other container mountings, manifold connections and pipework. The flexible discharge hose is provided with a swivel fitting at the inlet.
Nipples for installation on the pipeline of nozzles of sprays, union and face connections for installation of elements of the pipeline, test caps for the pipeline, adapters for discharge horses, couplings-adapters