EMERGENCY VALVE CLOSURE SYSTEM By DOSTEK ENGINEERING SDN. BHD.
MaxGuard TM MaxGuard is a simple, but highly effective remote closing device developed by Dostek Engineering Sdn. Bhd. MaxGuard shut off the gas flow immediately at the container valve, offering very signification benefits over traditional remote shut-off valves mount in the chlorine pipework.
Protection for your workforce Remote shutdown of the chlorine supply removes the need for personnel to enter the danger area. MaxGuard closes the container valve, shutting off the chlorine flow within 20 seconds of being triggered.
Easy installation no interruption of supply The MaxGuard system is self-contained and has a small footprint. Robust in construction and field tested for reliability. MaxGuard can be optionally equipped with battery back-up (automatically re-charged) to guard against power failure. The system will also alarm if the gas supply pressure falls to a point where any further fall could prevent proper operation.
Description of Equipment a. Control Panel - Panel material : Epoxy Powder Coated Steel Nitrogen : Compressed nitrogen reduce to operate at - 125 psi by nitrogen gas regulator unit Pneumatic hose : 3/8” OD and 1/4” ID stainless steel - screen shield Teflon tubing
Description of Equipment b. Ratchet and Floor Mounting Bracket Each ratchet requires 6 CFM to operate - Closing torque : 40 – 45 fl. Lb - Material of construction: - Mounting bracket : Epoxy Powder coated black steel Ratchet device enclosure : Epoxy Powder coated black steel
Description of Equipment c. Electronics Enclosure : IP 54 - - Power requirement : 240 Vac, 1 Phase, 50 Hz. Less than 0.5 Amp*Hr - Two relay outputs : 5 amps @ 250 Vac
Component for a complete system Nitrogen Gas Control Panel Gas Control Unit
Operation of Maxguard MaxGuard can be activated automatically or manually Automatic Operation - The system should be wired into a gas detector so that when a gas leak is detected, the unit will shut the chlorine valves. - Operator also has the option to use the emergency shut-off push-button to activate the system.
MaxGuard Control Panel Pressure relief valve Pressure Switch Solenoid Valve (Normally Closed) Manual Bypass ball valve (NC) Gas Outlet Gas Inlet
Control Panel Power “ON” Alarm Gas Detector Indicator Buzzer Press Button : Reset / Ack / Emergency Shutdown
Gas Control Unit To Nitrogen Cylinder Pressure Gauge (125 psi) Nitrogen gas regulator unit Wall mounting bracket Manual Pressure Relief Valve (NC)
Description of Equipment FRL : FILTER / REGULATOR / LUBRICATOR
Floor Mounting Bracket Air Ratchet Chlorine Drum Floor Mounting Bracket Flexible Gas Hose Chlorine Drum Stopper
Floor Mounting Bracket Front / Back Valve Adjuster Up / Down Valve Floor Level Adjuster Adjustment Left / Right Valve Adjuster
Air Ratchet and Mounting Yoke Air Ratchet Gas Inlet Chlorine Drum “GAS” Valve Air Ratchet Chlorine Drum “Liquid” Valve Chlorine valve mounting yoke
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