DOSTEK ENGINEERING SDN. BHD. MaxGuard TM MaxGuard is a simple, but - - PowerPoint PPT Presentation

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Nov 29, 2022 445 likes •630 views

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

SLIDE 1

EMERGENCY VALVE CLOSURE SYSTEM

By DOSTEK ENGINEERING SDN. BHD.

SLIDE 2

MaxGuardTM

 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.

SLIDE 3

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.

SLIDE 4

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

peration.

SLIDE 5

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

SLIDE 6

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

SLIDE 7

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

SLIDE 8

Component for a complete system

Control Panel Gas Control Unit Nitrogen Gas

SLIDE 9

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.

SLIDE 10

MaxGuard Control Panel

Pressure relief valve Pressure Switch Solenoid Valve (Normally Closed) Manual Bypass ball valve (NC) Gas Inlet Gas Outlet

SLIDE 11

Control Panel

Gas Detector Power “ON” Alarm Indicator Press Button : Reset / Ack / Emergency Shutdown Buzzer

SLIDE 12

Gas Control Unit

Nitrogen gas regulator unit To Nitrogen Cylinder Pressure Gauge (125 psi) Manual Pressure Relief Valve (NC) Wall mounting bracket

SLIDE 13

Description of Equipment

FRL : FILTER / REGULATOR / LUBRICATOR

SLIDE 14

Floor Mounting Bracket

Chlorine Drum Stopper Chlorine Drum Air Ratchet Floor Mounting Bracket Flexible Gas Hose

SLIDE 15

Floor Mounting Bracket

Floor Level Adjustment Left / Right Valve Adjuster Up / Down Valve Adjuster Front / Back Valve Adjuster

SLIDE 16

Air Ratchet and Mounting Yoke

Chlorine Drum “GAS” Valve Chlorine Drum “Liquid” Valve Chlorine valve mounting yoke Air Ratchet Gas Inlet Air Ratchet