CM Series
Air Shutoff Valves
- Engine Power: 4 - 603 HP
- Mass: 1.0 - 18.7 LB
- Height: 2.36 - 6.2 in
- Combined Manual and Automatic Engine Overspeed Shut Down Valves
- A range of easily installed diesel engine air intake valves that automatically close on engine overspeed, and also incorporate a manual shut down feature for additional safety.
The Fluid Power Energy (FPE) CM Series combined manual and automatic overspeed air intake 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 CM 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.
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Description
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 CM Series valve remains shut until the engine has entirely stopped. The valve then resets to the open position after a slight delay.
The FPE CM Series of automatic overspeed intake shut down valve kits include a manual actuator connected to the valve via a mechanical cable to enable emergency vavle closure.
Dimensions
CM SERIES - IMPERIAL DIMENSIONS
| 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) | |||||||
| CM018 | 4 | 24 | 2.60 | 2.36 | 0.79 | 1.0 | 1.4 | 1.5 | 1.8 | 1.8 | ||||
| CM027 | 5 | 36 | 3.19 | 2.36 | 0.79 | 0.8 | 1.4 | 1.5 | 1.6 | 1.8 | 1.9 | 2.0 | ||
| CM045 | 10 | 60 | 4.04 | 2.99 | 0.79 | 1.3 | 1.8 | 1.9 | 2.0 | 2.3 | 2.4 | 2.4 | 2.5 | 2.8 |
| CM078 | 40 | 105 | 4.78 | 3.17 | 0.79 | 1.5 | 2.0 | 2.4 | 2.5 | 2.8 | 3.0 | |||
| CM090 | 54 | 121* | 5.12 | 3.46 | 0.98 | 2.0 | 2.8 | 3.0 | 3.3 | 3.5 | ||||
| CM110 | 67 | 148* | 5.67 | 3.78 | 0.98 | 2.6 | 2.8 | 3.0 | 3.3 | 3.5 | ||||
| CM140 | 107 | 188* | 6.22 | 4.06 | 0.98 | 3.3 | 3.5 | 3.9 | 4.0 | |||||
| CM185 | 134 | 248* | 6.89 | 4.29 | 0.98 | 4.2 | 3.5 | 4.0 | 4.5 | |||||
| CM235 | 174 | 315* | 8.15 | 4.92 | 0.98 | 6.8 | 6.0 | 4.8 | 5.0 | 5.5 | ||||
| CM290 | 201 | 389* | 9.13 | 5.31 | 1.18 | 8.4 | 6.0 | |||||||
| CM450 | 362 | 603* | 11.93 | 8.3-6.2 | 1.2-1.6 | 18.7 | 6 TO 9 - TO ORDER | |||||||
CM SERIES - METRIC DIMENSIONS
| METRIC 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) | |||||||
| CM018 | 3 | 18 | 66 | 65 | 20 | 0.26 | 25 | 35 | 38 | 45 | ||||
| CM027 | 4 | 27 | 81 | 65 | 20 | 0.35 | 35 | 38 | 41 | 45 | 48 | 51 | ||
| CM045 | 7.5 | 45 | 102.5 | 80.5 | 20 | 0.57 | 45 | 48 | 51 | 58 | 60 | 62 | 64 | 70 |
| CM078 | 30 | 78 | 121.5 | 83.5 | 20 | 0.7 | 51 | 60 | 64 | 70 | 77 | |||
| CM090 | 40 | 90* | 130 | 90 | 20 | 0.9 | 70 | 77 | 83 | 89 | ||||
| CM110 | 50 | 110* | 144 | 101 | 25 | 1.2 | 70 | 77 | 83 | 89 | ||||
| CM140 | 80 | 140* | 158 | 109.5 | 25 | 1.5 | 89 | 98 | 102 | |||||
| CM185 | 100 | 185* | 175 | 114.5 | 25 | 1.9 | 89 | 102 | 114 | |||||
| CM235 | 103 | 235* | 207 | 131 | 25 | 3.1 | 102 | 114 | 127 | 140 | ||||
| CM290 | 150 | 290* | 232 | 141.5 | 30 | 3.8 | 153 | 127 | ||||||
| CM450 | 270 | 450* | 303 | 210-158 | 30-40 | 8.5 | 6 TO 9 - TO ORDER | |||||||
Part Number Look Up
CM Series Air Shutoff Valve - Part Number Lookup
| FPE Number | Range in mm | AMOT/Chalwyn Number |
| CM018 - | 025 to 045 | D30 - AM |
| CMF020 - * | 035 to 044 | D35BF - AM |
| CMF027 - | 035 to 051 | D41 - AM |
| CM045 - | 045 to 070 | D45 - AM/D51 - AM** |
| CM078 - | 051 to 077 | D57 = AM/D64 - AM** |
| CM090 - | 070 to 089 | D70 - AM |
| CM110 - | 070 to 089 | D80 - AM |
| CM140 - | 089 to 102 | D92 - AM |
| CM185 - | 089 to 114 | D102 - AM |
| CM235 - | 102 to 140 | D121 - AM |
| CM290 - | 127 to 153 | D136 - AM |
| CM450 - | 152 to 229 | D200 - AM |
| *This ASV includes a filter **FPE part number listed are used to replace both Amot/Chalwyn part numbers shown | ||
General & Pneumatic 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
• The cable length for the manual shut down
For FPE Coding:
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
CM SERIES - FPE CODING
| CM SERIES - FPE CODING | |
| CM | CM Series |
| XXX | Max. Engine Power (KW) |
| - | |
| XXX | Inlet Adapter Size (MM) |
| - | |
| OXXX | Outlet Adapter Size (MM) (only use if different from inlet) |
| - | |
| T or L | Manual Close Handle Style (T= T-Handle; L= Lever) |
| - | |
| XX | Manual Shut Down Cable Length (Meters) |
| - | |
| SXXX | Special Features Code |