Products > Chalwyn safety
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Diesel engines are a potential source of ignition when used in areas where combustible gas, vapours or dusts may exist. Chalwyn are leading manufacturers of safety products for diesel engines which are required to operate either in hazardous areas where combustible gas, vapours or dust may exist, or in situations demanding special safety precautions.
The Chalwyn diesel engine safety product range includes automatic overspeed air and fuel shut down valves, air pressure, oil pressure, manual and electrically operated air intake shut down valves, flameproof alternators, exhaust spark arrestors and complete engine monitoring and automatic shut down systems.
Engine air intake positive shut off valves
If
flammable gas or vapour is drawn into the intake of a diesel engine it acts as
an additional ungoverned fuel supply. This may result in uncontrolled engine
overspeed, followed by dangerous mechanical failure or flash back through the
air intake, and the ignition of the surrounding gas or vapour
cloud.
Once a flammable mixture is being drawn into the engine intake it
may not be possible to stop the engine by closing down the fuel supply. An air
intake valve guaraantees a rapid and safe engine shut down.
Automatic reset types - Engine air intake positive shut off
valves
Simple, cost effective engine shutdown on overspeed. No speed signal
or power input needed. Lightweight, easy to install. Automatic reset after
engine stops. Low maintenance. Metal to metal seat seal.
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Basic D series Mini range for engines to 27kWm (36hp) with intake pipe
25mm (1") - 58mm (2-1/4") Bendix range - for engines 7.5 kWm (10hp) - 149kw (200hp)
with intake hose bore 40mm (1-9/16") - 108mm (4-1/4") Deutz flanged - model 1011 and 2011 engines up to 53kWe
(72hp) with standard 70 mm (2-3/4") inlet hose Spindle range - for engines 80kWm (107hp) - 392kW (525hp)
with intake hose bore 76mm (3") - 154mm (6-1/16") D200 range - for engines up to 650kWm (805hp) with intake
hose bore 152mm (6") - 229mm (9") |
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Mini range for engines to 27kWm (36hp) with intake pipe
25mm (1") - 58mm (2-1/4") Bendix range - for engines 7.5 kWm (10hp) - 149kw (200hp)
with intake hose bore 40mm (1-9/16") - 108mm (4-1/4") Spindle range - for engines 80kWm (107hp) - 392kW (525hp)
with intake hose bore 76mm (3") - 154mm (6-1/16") D200 range - for engines up to 650kWm (805hp) with intake
hose bore 152mm (6") - 229mm (9") |
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Mini range for engines to 27kWm (36hp) with intake pipe
25mm (1") - 58mm (2-1/4") Bendix range - for engines 7.5 kWm (10hp) - 149kw (200hp)
with intake hose bore 40mm (1-9/16") - 108mm (4-1/4") |
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Mini range for engines to 27kWm (36hp) with intake pipe
25mm (1") - 58mm (2-1/4") Bendix range - for engines 7.5 kWm (10hp) - 149kw (200hp)
with intake hose bore 40mm (1-9/16") - 108mm (4-1/4") |
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PVX series - air pressure to shut down |
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TPZ and D-AP series TPZ and D-AMP models - TPZ range for engines from 7.5kW (10hp) - 149kW (200hp) and
intake hoses from 40mm (1-9/16") - 108mm (4-1/4") - D-AP & D-AMP range for engines from 80kW (107hp) - 605kW
(805hp) and air intake hose bores from 76mm (3") - 229mm (9") |
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SVX models -
CE239
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CE240
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| Manual reset types - Engine air intake positive shut off valves |
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Suitable for US MMS attended installations, and Canadian remote positive air shut off regulations. Simple operation--instant engine shut down. Corrosion resistant; proven in offshore service. Metal to metal seals--avoids wear association with 'O' ring seals -
CE215
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CE217
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MPX series -
CE236
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SVX series -
CE228
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Manual start override types - Engine air intake positive shut off valves |
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SVX Series -
CE230
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HVX series -
CE229
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TMZ series & AMZ series -
CE208
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CE243
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CE231
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Fuel shutdown valves |
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FSX and LST series - The LST-200 automatically closes down the engine fuel supply on loss of an oil (or air) pressure signal. Suitable for engine types with fuel supply pipes up to about 10mm (3/8 inch) in diameter. CE226
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Diesel engine exhaust spark arrestors |
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| SSL, SSE, SAS and SSS series An exhaust spark arrestor is a key safety requirement for both hazardous areas and lower risk diesdel engine applications such as forestry or agriculture where a stray spark may cause ignition of combustible material. CE224  -
selection, application & maintenance |
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Engine mounted flameproof alternators |
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| ASX series Standard automotive type alternators are a continuous potential source of ignition when operated in hazardous atmospheres where combustible concentrations of gas, vapour or dusts may exist. Chalwyn offers a range of flameproof alternators. Battery excited and self-excited, 12V and 24V, 25A and 50A. |
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Diesel engine monitoring and automatic shutdown systems |
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| - electronic - mechanical When a diesel engine is operated in a hazardous area or in an application where special precautions are justified, it is often a general requirement that the engine automatically shuts down if its speed, critical temperatures or oil pressure fall outside of predetermined limits. It is widely recognized that the best method to achieve such an emergency automatic shut down is by closure of an engine intake shut down valve. To comply with EN 1834-1:2000 both the engine air intake and diesel fuel supply must be shut down automatically in the event of engine overspeed. It must also be possible to operate the air shut down valve manually. |
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Technical literature
A wide variety of material is
available on Chalwyn's website
- Marketing / sales brochures
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Installation or Selection, Operation or Application and Maintenance
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Technical data and spares sheets
Introductory
video
updated July 2009
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