EPDM Hoses for Data Center Liquid Cooling Systems
Peroxide-cured EPDM coolant hoses for CDU interfaces, rack manifolds, server cooling loops and service connections. Coordinate the hose, fittings and coolant conditions as one assembly.
EPDM Tube, Fiber Braid & Protective Cover
Flexible construction for coolant routing through CDU, manifold and server cooling connections.
- Inner Tube
- Black peroxide-cured EPDM
- Reinforcement
- One fiber braid
- Outer Cover
- Smooth synthetic rubber; UL94 V-0 specification
- Assembly Review
- Hose size, fitting style, coolant and routing confirmed together
Identify Cooling Lines at a Glance
Black, blue and red options support project-defined supply, return and service-line identification.
Black EPDM Hose
General cooling and service lines
Blue EPDM Hose
Coolant supply line identification
Red EPDM Hose
Coolant return line identification
Confirm the color convention used by your installation. Blue supply and red return are suggested labels from the reference specification.
EPDM Hose Sizes & Design Conditions
Compare inside diameter, outside diameter, minimum bend radius and working pressure by part number.
| Part number | ID in / mm | OD in / mm | Min. bend radius in / mm | Weight lb/ft / kg/m | Working pressure psi / bar | Standard pack |
|---|---|---|---|---|---|---|
| NLH-EP-04-BLK-RL | 1/4 / 6.4 | 0.48 / 12.2 | 1.0 / 25.4 | 0.08 / 0.12 | 150 / 10.3 | 600 ft Reel |
| NLH-EP-06-BLK-RL | 3/8 / 9.5 | 0.63 / 15.9 | 1.5 / 38.1 | 0.12 / 0.18 | 150 / 10.3 | 450 ft Reel |
| NLH-EP-06X-BLK-RL | 3/8 / 9.5 | 0.60 / 15.2 | 1.6 / 40.6 | 0.12 / 0.18 | 150 / 10.3 | 450 ft Reel |
| NLH-EP-08-BLK-RL | 1/2 / 12.7 | 0.78 / 19.8 | 2.8 / 69.9 | 0.18 / 0.27 | 150 / 10.3 | 300 ft Reel |
| NLH-EP-10-BLK-RL | 5/8 / 15.9 | 0.91 / 23.1 | 3.5 / 88.9 | 0.20 / 0.30 | 150 / 10.3 | 250 ft Reel |
| NLH-EP-12-BLK-RL | 3/4 / 19.1 | 1.03 / 26.2 | 4.5 / 114.3 | 0.25 / 0.37 | 150 / 10.3 | 200 ft Reel |
| NLH-EP-16-BLK-RL | 1 / 25.4 | 1.28 / 32.5 | 6.5 / 165.1 | 0.34 / 0.51 | 100 / 6.9 | 150 ft Reel |
| NLH-EP-32-BLK-RL | 2 / 50.8 | 2.36 / 67 | 10.0 / 250 | 1.2 / 1.8 | 150 / 10.3 | 100 ft Reel |
The listed 1-inch hose has a working pressure of 100 psi / 6.9 bar; other listed sizes are 150 psi / 10.3 bar. Values follow the supplied reference. Confirm the final part specification before ordering, including the inch/mm values for the 2-inch row.
Temperature
Coolant: -40°F to +212°F / -40°C to +100°C.
Air: up to +158°F / +70°C.
Phosphate ester media: -40°F to +176°F / -40°C to +80°C, subject to compatibility review.
Vacuum
15 inHg for -04 to -12 part codes; 10 inHg for -16. Confirm requirements for other sizes and the complete assembly.
Media Review
The reference lists DI water, water/glycol, process cooling water, air, dry air and industrial coolants. Confirm the exact fluid formulation, concentration and operating conditions.
From CDU Interfaces to Rack Cooling Connections
Coordinate EPDM hoses with dry break valves, clamps, fittings and manifold interfaces.
CDU Supply & Return
Flexible hose connections between distribution equipment and adjoining cooling lines.
Rack & Manifold Routing
Coordinate bore, length and minimum bend radius with the available rack space.
Service & Modular Connections
Review fittings, clamps, dry break interfaces and accessibility for maintenance.
Confirm the Hose, Coolant & Fittings Together
Hose Size & Routing
- ID, OD and minimum bend radius
- Installed length and routing space
- Color requirements for each cooling line
Coolant Conditions
- Fluid formulation and concentration
- Pressure, temperature and vacuum
- Cleanliness and compatibility requirements
Connection Package
- Barb, clamp, coupling or adapter style
- Sample length, reel quantity and volume
- Drawings, test records and labeling
EPDM Hoses for Data Center Liquid Cooling Systems FAQ
What is the hose construction?
The reference specifies a black peroxide-cured EPDM tube, one fiber braid reinforcement and a smooth synthetic rubber cover.
Are all listed sizes rated at 150 psi?
No. The NLH-EP-16-BLK-RL 1-inch size is listed at 100 psi / 6.9 bar. Other listed part numbers are 150 psi / 10.3 bar.
What temperature range is listed?
The published coolant range is -40°C to +100°C. Air and phosphate ester conditions have separate limits. Verify the selected hose, fittings and fluid formulation for your application.
Can the hose be used with water/glycol coolant?
Water/glycol is included in the reference media list. Confirm concentration, additives, temperature and cleanliness requirements for the actual coolant.
What does the UL94 V-0 specification apply to?
The supplied reference specifies UL94 V-0 for the hose cover. Request the relevant product documentation for your approval process.
What should I include in an EPDM hose inquiry?
Send the required ID and length, color, coolant, pressure, temperature, routing, fitting style, quantity and documentation needs.
Discuss Your EPDM Hose Requirements
Share your hose size, length, coolant, pressure, temperature, bend radius, fitting style, color and quantity.