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Copeland Emerson ALCO ACK Series Refrigeration Check Valve
Normally closed magnetic check valves designed to maintain one-way refrigerant flow and help prevent reverse refrigerant movement in commercial refrigeration, air-conditioning, liquid-line and compressor discharge applications.
ACK Series 1/4" – 2-5/8" ODF Magnetic Check Valve Normally Closed Copper ConstructionReliable One-Way Refrigerant Flow Protection
The Copeland Emerson ALCO ACK Series Check Valve is a normally closed magnetic refrigeration check valve designed to allow refrigerant to travel in the required direction while helping prevent unwanted reverse flow.
The ACK Series is available in copper ODF connection sizes from 1/4" up to 2-5/8", making the range suitable for small refrigeration circuits through to larger commercial and industrial refrigeration systems.
Key Features
Complete Copeland ACK Check Valve Range
| Model | Part Number | Connection Size | Connection | Cv |
|---|---|---|---|---|
| ACK-4 | 064985 | 1/4" | ODF | 0.9 |
| ACK-6 | 064986 | 3/8" | ODF | 1.0 |
| ACK-8 | 064987 | 1/2" | ODF | 3.1 |
| ACK-10 | 064988 | 5/8" | ODF | 3.6 |
| ACK-12 | 064989 | 3/4" | ODF | 8.0 |
| ACK-14 | 064990 | 7/8" | ODF | 9.2 |
| ACK-18 | 064991 | 1-1/8" | ODF | 15.4 |
| ACK-22 | 064992 | 1-3/8" | ODF | 23.8 |
| ACK-26 | 064993 | 1-5/8" | ODF | 24.2 |
| ACK-34 | 064994 | 2-1/8" | ODF | 38.7 |
| ACK-42 | 064995 | 2-5/8" | ODF | 71.7 |
Series Technical Specifications
| Brand | Copeland / Emerson ALCO |
|---|---|
| Series | ACK |
| Product Type | Refrigeration Check Valve |
| Operating Principle | Normally Closed Magnetic Check Valve |
| Connection Type | Copper ODF Solder |
| Connection Range | 1/4" – 2-5/8" |
| Strainer | Built-In 30 Mesh Stainless Steel |
| Body Construction | Hermetic Spun Copper |
| Installation Position | Any Position |
| Typical Application | Liquid Lines / Compressor Discharge Lines |
How Does an ACK Check Valve Work?
Why Use a Refrigeration Check Valve?
Pressure differences can occur in refrigeration systems when compressors start or stop, during defrost operation or when multiple refrigeration circuits operate at different pressures.
A properly selected ACK check valve can help:
✓ Maintain refrigerant flow in the intended direction
✓ Prevent unwanted reverse refrigerant movement
✓ Reduce refrigerant migration between circuits
✓ Support compressor discharge piping arrangements
✓ Improve control in parallel-compressor systems
✓ Protect liquid-line refrigeration circuits
Typical Applications
How to Select the Correct ACK Model
Why Choose Copeland ACK Series?
✓ Complete 1/4" to 2-5/8" connection range
✓ Magnetic checking action
✓ Normally closed design
✓ Built-in 30-mesh stainless-steel strainer
✓ Hermetic spun copper construction
✓ Can be mounted in any position
✓ Designed for refrigeration liquid and discharge lines
✓ Wide Cv range for small to large refrigeration systems
✓ Proven Copeland / Emerson ALCO flow-control technology
Copeland Emerson ALCO ACK Check Valve Supplier in Malaysia
Looking for a refrigeration check valve for your cold room, freezer, condensing unit or commercial refrigeration system?
Contact us with your required pipe size, refrigerant, system capacity and application for suitable ACK model selection and availability.
Inquiry - Copeland Check Valve (Emerson Alco)
