C Series

Air Shutoff Valves

  • Engine Power: 4 - 603 HP
  • Mass: 0.6 - 17.6 LB
  • Height: 2.07 - 4.9 in.
  • A range of easily installed diesel engine air intake valves that automatically close on engine overspeed
  • Automatic Engine Overspeed Shut Down Valves

The Fluid Power Energy (FPE) C Series automatic overspeed shut down valves are designed for situations where flammable gas or vapor may enter the atmosphere in an area in which a diesel engine is operating.

Should such flammable material be drawn into the engine intake, this may result in uncontrolled engine overspeed, and a situation in which shut down of the diesel fuel supply may fail to stop the engine.

Under these circumstances, a rapid shut down of the engine is required by immediate closure of the engine air intake thereby reducing the potential for significant damage and possible ignition of the flammable material in the surrounding atmosphere.

The FPE C Series automatic engine air intake shut down valves are suitable for installation in the intakes of either naturally aspirated or turbocharged engines.

Once installed and set, the repeatability of the actual engine automatic shut down speed has a greater scatter in the case of turbocharged engines than for naturally aspirated types. However, unless there is an individual requirement for an exact shut down speed, adequate protection from excessive engine overspeed is
achieved.

Description

Fluid Power Energy are manufactured and tested under our EN ISO 9001: 2015 quality management system. We are certified to supply ATEX equipment under Quality assurance Certificate CML ATEXQ11003.

• Equipment supplied with an EC Type Examination Certificate is CE marked meets the provision of the ATEX directive 2014/34/EU.
• Self-certified equipment supplied with an EU Type Examination Certificate is CE marked and meets the provision of the ATEX directive 2014/34/EU.

The actuation force to close the valve is derived from the engine intake air flow passing through the valve. As the air flow increases, this actuation force also increases. The actuation force is resisted by an internal valve spring, the pre-load of which is adjusted via the “Trip Adjuster Screw.”

Once the actuation force exceeds the resisting force of the valve spring, the valve rapidly moves to the closed position. Once closed, the C Series valve remains shut until the engine has entirely stopped. The valve then resets to the open position after a slight delay.

Dimensions

C Series Air Shutoff Valve - Specifications Overview

Imperial Table Engine Power Range (HP) Dimensions (Inches)
Model Min Max A B L (Max) Mass (LB) Stock Hose Adapters D (Other Sizes Available On Request)
C018 4 24 2.60 2.07 0.79 0.6 1.0 1.4 1.5 1.8
C027 5 36 3.19 2.07 0.79 0.8 1.4 1.5 1.6 1.8 1.9 2.0
C045 10 60 1.04 2.62 0.79 1.3 1.8 1.9 2.0 2.3 2.4 2.4 2.5 2.8
C078 40 105 4.78 2.72 0.79 1.5 2.0 2.4 2.5 2.8 3.0
C090 54 121 5.12 2.97 0.79 2.0 2.8 3.0 3.3 3.5
C110 67 148* 5.67 3.43 0.98 2.6 2.8 3.0 3.3 3.5
C140 107 188* 6.22 3.64 0.98 3.3 3.5 3.9 4.0
C185 134 248* 6.89 3.84 0.98 4.2 3.5 4.0 4.5
C235 174 315* 8.15 4.43 0.98 6.8 4.0 4.8 5.0 5.5
C290 201 389* 9.13 4.82 1.18 8.4 6.0
C450 362 603* 11.93 8.3 - 4.9 1.2 - 1.6 17.6 6 To 9 - To Order

C Series Air Shutoff Valve - Specifications Overview

Metric Table Engine Power Range (HP) Dimensions (MM)
Model Min Max A B L (Max) Mass (LB) Stock Hose Adapters D (Other Sizes Available On Request)
C018 3 18 66 52.5 20 0.26 25 35 38 45
C027 4 27 81 52.5 20 0.35 35 38 41 45 48 51
C045 7.5 45 102.5 66.5 20 0.57 45 48 51 58 60 62 64 70
C078 30 78 121.5 69 20 0.7 51 60 64 70 77
C090 40 90 * 130 75.5 20 0.9 70 77 83 89
C110 50 110 * 144 87 25 1.2 70 77 83 89
C140 80 140 * 158 92.5 25 1.5 89 98 102
C185 100 185 * 175 97.5 25 1.9 89 102 114
C235 103 235 * 207 112.5 25 3.1 102 121 127 140
C290 150 290 * 232 122.5 30 3.8 153
C450 270 450 * 303 210 - 152 30 -40 8 152 To 229 - To Order
Power values marked with an asterisk* may be increased under certain restricted circumstances. Contact FPE or your FPE supplier for details. Data subject to change.

Part Number Look Up

C Series Air Shutoff Valve - Part Number Lookup

FPE Number Range In MM AMOT/Chalwyn Number
C018 - 025 to 045 D30
CF020 - * 035 to 044 D35BF
C027 - 035 to 051 D41
C045 - 045 to 070 D45/D51**
C078 - 051 to 077 D57/D64**
C090 - 070 to 089 D70
C110 - 070 to 089 D80
C140 - 089 to 102 D92
C185 - 089 to 114 D102
C235 - 102 to 140 D121
C290 - 127 to 153 D136
C450 - 152 to 229 D200
* This ASV Includes a Filter **FPE part number listed are used to replace both Amot/Chalwyn part number shown

General & Pneumatic Specifications

Specifications

Valve Selection

The following data is required for FPE to select the most suitable valve for your application:
• Engine type and model
• Engine rating and/or application details
• The internal bore of the intake system hose at the position the valve is to be fitted

C Series - FPE Coding

C SERIES - FPE CODING
C C Series Use Metric Value for adapter code, add zero to make 3 digit code (e.g. 25 = 025); Combine Inlet and outlet adapter, if the same; Special features by arrangement with FPE
XXX Max. Engine Power (KW)
-
XXX Inlet Adapter Size (MM)
-
OXXX Outlet Adapter Size (MM) (Only use if different from inlet)
-
SXXX Special Features Code

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