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M & MR Series Air Cooled Mobile Heat Exchanger, 1-1/4 NPT Ports, 3.25 sq ft Face Area

Description & Features

Designed for high-performance thermal management this unit integrates rugged steel manifolds and copper tubes with aluminum fins to facilitate effective heat removal. Its construction includes high-strength materials ensuring durability and long-term reliability in various industrial applications.

The 1-1/4 NPT ports support smooth oil flows up to 100 GPM. The M & MR Series Air Cooled Mobile Heat Exchanger 1-1/4 NPT Ports 3.25 sq ft Face Area offers heat dissipation capabilities of up to 90 000 BTU/Hr essential for demanding operations.

This model features optional internal by-pass valves to minimize additional setup requirements and reduce costs. It operates efficiently at a pressure rating of 300 PSI and withstands a maximum temperature of 400F making it versatile for numerous industrial environments.

Additional materials include steel for manifolds and connections and turbulators that enhance heat transfer efficiency. The unit is pressure-tested to 300 PSI ensuring reliable performance under high-pressure conditions.

MPN: C1DD55

Supplier Part Number: 73476

Specifications

A 24	B 19.50	C 26.88	D 23.22	E 21.72	Brand API Heat Transfer	Brand API Heat Transfer	Pack Size 1.00	UOM EA	F 21.50	Face Area 3.25	G 24.72	Ports 1-1/4 NPT	Ports 1-1/4 NPT	Supplier Part Number 73476	Alternate Part Numbers Alternate Part Number 73476, Alternate Part Number C1DD55	Product Weight 34.00 lbs

Similar Products

Model Number	Bypass Spring	A	B	C	D	E	F	G	Ports	Face Area	Price	Action
M-15-S M & MR Series Heat Exchanger		8	14.5	10.88	18.22	16.72	5.5	19.72	SAE-16	0.81
M-20 M & MR Series Heat Exchanger		12	14.5	14.88	18.22	16.72	9.5	19.72	1 NPT	1.21

Product Questions & Answers (2)

Question by: Wayne W on Sep 14, 2025, 9:49 PM

Got a mobile hydraulic system running up to 85 GPM on a piece of equipment that puts out a fair amount of heat. Would this cooler actually keep up with that kind of load?

Answer by: Customer Support on Sep 16, 2025, 9:14 AM

At 85 GPM you'd have plenty of headroom here. The unit handles oil flows up to 100 GPM and is rated to pull out up to 90,000 BTU/Hr, so it's built for systems that run hard. The 1-1/4 NPT ports support that flow without restriction, and the copper tube and aluminum fin core is designed to move heat efficiently. For a mobile application pushing that kind of volume, this size fits the job well.

Question by: Frank B on Oct 29, 2025, 2:04 PM

running about 85 gpm through it, am i gonna choke the flow with these 1-1/4 ports?

Answer by: Customer Support on Oct 30, 2025, 3:05 PM

With 1-1/4 NPT ports, this exchanger is built to support oil flow rates up to 100 GPM, so 85 GPM is within its stated flow capability.