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Hunter OEM Parts
General Marine Parts

Cooling Water Flow Detector

Only For Use With Alarms That Draw 0.5 Amps or Less

These devices activate a boat alarm (not included) upon loss of raw cooling water flow to the engine.
Made of PVC and designed for marine applications, they use a 2-wire, non-polarity switch that is normally closed (normally open models are available).
The switch opens, and the alarm shuts off, as long as the flow of water exceeds the minimum flow rate.
While heat exchanger cooled engines will run several minutes without raw water flow before overheating, during that time significant damage can be done to the engine, raw water pump and exhaust system. Monitoring raw water flow is a prudent step toward the safe operation of your engine.
Monitors the flow of raw cooling water to engines, generators, or bait tanks
Prevents costly engine damage when raw water intake is blocked by debris in the water
Sets off alarm when flow rate falls below minimum - flow rate to activate the alarm is adjustable, and is shown in the Table
Note that #13209 is non-adjustable and is factory set to activate at flows less than 1.5 gpm; it is designed for small engines, gensets, etc.
Can be used with bell alarm (AQA#20100) or buzzer alarms (AQA#20106), etc., but if the alarm draws more than 0.5 amps, you must use a relay switch to activate the alarm
Multi-voltage - works with 12, 24, and 32 volt systems
Leaves warehouse: Next business day
(if in stock)

Shipping time: see chart

Made to order: No

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Current inventory as of Sunday, 8:30 am Pacific time
Item Our SKU
Mfg P/N
Specs Status Price Quantity
Cooling Water Flow Detector, 1 in. FPT 1.5 - 12 GPM 40 - 120 HP
SKU 132139

Mfg p/n 10233
Flow Rate: 1.5 - 12 GPM
HP Range: 40 - 120 HP
Size: 1" FPT
8 in stock$74.15
Cooling Water Flow Detector, 2 in. FPT 8 - 10 GPM 200+ HP
SKU 01335

Mfg p/n 10231
Flow Rate: 8 - 10 GPM
HP Range: 200+ HP
Size: 2" FPT
6 in stock$74.15
Cooling Water Flow Detector, 1-1/2 in. FPT 6 - 8 GPM 120 - 200 HP
SKU 01338

Mfg p/n 10271
Flow Rate: 6 - 8 GPM
HP Range: 120 - 200 HP
Size: 1-1/2" FPT
5 in stock$74.15
Cooling Water Flow Detector, 1 in. FPT 1.5 GPM <40 HP
SKU 41731

Mfg p/n 13209
Flow Rate: 1.5 GPM
HP Range: <40 HP
Size: 1" FPT
2 in stock$70.06

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