Solenoid Valve – Alco 240RA Series (Refrigerant, 2-Way NC)
Overview
The Alco 240RA series is a proven refrigerant shut-off solution designed to minimize pressure drop and speed up installation. Extended ODF ends allow quick brazing without disassembling the valve body. The PTFE diaphragm withstands higher temperatures, and models are available with manual stem (certain sizes) for service overrides. Typical operating envelope includes MOPD up to ~300 psig and max fluid temperature up to 248 °F (120 °C) (model-dependent). The coil platform covers common AC/DC voltages and uses quick retention hardware for fast swaps.
Key Features
• 2-way, normally-closed diaphragm solenoid valve for liquid/suction/hot-gas lines.
• Brazed-in installation; extended ends, no body disassembly.
• PTFE diaphragm for high-temperature duty; stainless enclosing tube.
• Shared coil family across sizes; multiple voltages available (see ESC/coil docs).
• MOPD up to 300 psig, max fluid temp 248 °F (120 °C) (by model).
• Manual stem options on select sizes (e.g., 240RA20).
Typical Applications
• Supermarket refrigeration racks (liquid line shut-off, hot-gas defrost)
• Industrial chillers, process cooling, cold rooms
• Suction line or hot-gas bypass control in HVAC/R systems
Model Numbering
240RA 8T5MVLC – series / size / connections / options (use the catalog to decode your exact code for size, ODF ends, and options).
Selection & Sizing Notes
• Choose line size/ODF to match pipe; verify MOPD vs. system ΔP.
• Pick coil voltage & frequency from the coil selection sheet.
• If you require manual service override, choose a manual-stem variant.
Installation & Commissioning
• Braze with the valve assembled (per spec) using heat-sink and nitrogen purge; avoid overheating coil/enclosing tube.
• Mount the enclosing tube roughly vertical up (±90° recommendation) for best reliability.
• After install, leak-test, energize coil, and confirm flow/close function under actual ΔP.
Compliance / Notes
• Refer to latest Copeland/Copeland-Alco documentation; certain sizes/variants carry UL/cUL (file MP604) and PED markings as applicable. Coils sold separately.
Request a Quote for Solenoid Valve – Alco 240RA Series (Refrigerant, 2-Way NC)
Request a quote—send your exact code (e.g., 240RA-8T5M/T11/…), line size/ODF, refrigerant, ΔP/MOPD, and coil voltage. Seven Star LLC will validate sizing, confirm availability, and provide the best regional pricing.
Technical Overview
The Alco Controls (Emerson) 240RA series is a 2-way, normally-closed (NC) solenoid valve designed for refrigerant liquid-line, suction-line, and hot-gas service. As a directly-actuated valve, the solenoid coil directly moves the plunger and seat without relying on line pressure differential to assist opening — unlike servo-operated (pilot) solenoid valves, this means the 240RA can open reliably even at very low or zero pressure drop, with a minimum operating pressure differential of just 0.05 bar. The valve body is designed so that no disassembly is required during brazing or soldering installation, protecting internal seals and the solenoid coil assembly from installation heat damage.
Per the manufacturer’s official technical catalogue, the 240RA series carries a maximum allowable working pressure in the range of approximately 31 bar (regional/metric edition) to 500 psig (≈34.5 bar, per the US catalog edition) — Seven Star LLC notes this minor variance between source editions rather than asserting a single figure, and recommends confirming the exact rating for your specific model/revision at time of order. Maximum operating pressure differential (MOPD) is 25 bar with standard AC coils. Media temperature range spans −40°C to +120°C. The valve is compatible with a broad range of modern and legacy refrigerants, including R134a, R22, R404A, R507, R407C, R450A, R452A, R454A, R454C, R455A, R513A, R1234yf, R1234ze, R448A, and R449A, plus legacy R-12 and R-502 in older catalogue editions.
The 240RA series spans five orifice sizes (8, 9, 12, 16, and 20, denoting orifice diameter in sixteenths of an inch), with solder connection sizes ranging from 5/8″ (16mm) up to 2-1/8″ (54mm) on the largest 240RA20 model, which also includes a standard manual stem override for emergency manual operation. Nominal liquid-service capacities (R134a) range from 36.3 kW on the smallest 240RA8 to 202.6 kW on the 240RA20, with Kv values from 2.3 to 12.8 m³/h across the range. Coil options include 230V, 120V, and 24V AC (50/60Hz, 8W) and 24V DC (15W), plus a DC-chopper option allowing standard 24VAC coil hardware to run on 24VDC at just 3W without any reduction in MOPD rating. Coils carry an IP65 protection rating with plug/cable connection and conform to the EU Low Voltage Directive. The 240RA16T11 and 240RA20 variants are CE-marked under the EU Pressure Equipment Directive, and the valve family carries UL/CUL file number MP604 in the US market.
Applications
The 240RA series is used throughout commercial and industrial refrigeration and HVAC systems for liquid-line, suction-line, and hot-gas (defrost) shutoff duty — common in supermarket refrigeration racks, industrial chillers, cold storage facilities, and process cooling systems across Oman’s food processing, cold chain logistics, and commercial refrigeration sectors.
Alco 240RA Data by Size
| Maximum working pressure (MWP) | 31 bar, all 240RA sizes |
| MOPD | 25 bar with Alco AC coils; reduced with DC coils depending on valve type and size |
| Kv by size | 240RA8 2.3; 240RA9 4.8; 240RA12 5.4; 240RA16 8.8; 240RA20 12.8 m³/h |
| Nominal liquid capacity R134a | 240RA8 36.3; 240RA9 76.2; 240RA12 85.7; 240RA16 139.1; 240RA20 202.6 kW |
| Rating conditions | +38 °C condensing, +4 °C evaporating, 0.15 bar pressure drop, 1 K subcooling |
| Port diameter | 240RA8 12.5 mm; 240RA9 15 mm; 240RA12 20 mm; 240RA16 25 mm |
| Weight including coil | 240RA8T5 1.1 kg; 240RA9 and 240RA12 1.4 kg; 240RA16T9 2.9 kg |
| Part numbers 240RA8 / 240RA9 | 8T5 801 160 (5/8 in), 8T7 801 143 (22 mm, 7/8 in); 9T5 801 161 (16 mm, 5/8 in), 9T7 801 162 (22 mm), 9T9 801 142 (1-1/8 in) |
| Part numbers 240RA12 / 240RA16 | 12T7 801 163 (22 mm), 12T9 801 144 (1-1/8 in); 16T9 801 164 (1-1/8 in), 16T11 801 166 (35 mm, 1-3/8 in) |
| Part numbers 240RA20 (manual stem) | 20T11-M 801 172 (35 mm); 20T13-M 801 224 (42 mm) and 801 173 (1-5/8 in); 20T17-M 801 174 (54 mm, 2-1/8 in) |
| Manual stem | Standard on 240RA20; available on request (type M) for 240RA8 to 240RA16 |
| Repair kits | 240RA8 KS 30061; 240RA9 KS 30062; 240RA12 KS 30063; 240RA16 KS 30065; 240RA20 KS 30097 |
Alco 240RA Type Codes, Part Numbers and Capacity by Size
Alco type codes follow a fixed pattern. In 240RA 9T5, for example, 240RA is the series, 9 is the seat diameter in sixteenths of an inch, T means solder (ODF) connection and 5 is the tube size in eighths of an inch, so 5/8 inch or the nearest metric tube. A trailing M indicates a manual stem. Manual stems are standard on every 240RA20 and can be supplied on request for sizes 8 to 16. The catalogue lists both metric and inch tube versions under separate part numbers.
Flow capacity rises quickly with seat size. Kv is 2.3 m³/h for 240RA8, 4.8 for 240RA9, 5.4 for 240RA12, 8.8 for 240RA16 and 12.8 for 240RA20. Nominal liquid-line capacities with R134a are 36.3, 76.2, 85.7, 139.1 and 202.6 kW respectively, quoted at +38 °C condensing, +4 °C evaporating, 0.15 bar pressure drop and 1 K subcooling. For other conditions the catalogue provides correction factors for temperature and pressure drop.
Alco stresses that a valve should be chosen by capacity, not by pipe size. All 240RA valves are servo operated and need about 0.05 bar of pressure drop to stay fully open; an oversized valve in a part-load or capacity-controlled circuit may not see that differential and can close unintentionally, causing hunting. Port diameters are 12.5 mm (size 8), 15 mm (size 9), 20 mm (size 12) and 25 mm (size 16), and weights including coil run from 1.1 kg for 240RA8T5 to 2.9 kg for 240RA16T9.
Alco 240RA Coils, DC Operation, Pressure Limits and Service Kits
The 240RA body is supplied without a coil and takes the Alco ASC coil, held by a snap-on clip. AC coils consume 8 W and are listed for 230 V, 120 V and 24 V at 50 Hz; the IP65 rating applies once the DIN plug or a moulded cable assembly is fitted. Where only 24 V DC is available, the DS2-N15 chopper plug lets a 24 V AC coil be used at 3 W without reducing MOPD.
Maximum working pressure is 31 bar for every 240RA size, and MOPD is 25 bar with Alco AC coils; plain DC coils lower the MOPD depending on valve size. Media temperature range is -40 to +120 °C. Sizes 240RA 16T11 and 240RA20 are CE marked under the Pressure Equipment Directive. For maintenance, Alco lists repair kits KS 30061 (size 8), KS 30062 (9), KS 30063 (12), KS 30065 (16) and KS 30097 (20), with matching gasket kits.
Why Seven Star LLC
Selecting the correct 240RA orifice size, coil voltage, and refrigerant compatibility for a given system is essential to reliable operation and code compliance. Seven Star LLC supplies genuine Alco/Emerson solenoid valves and works with customers across Oman and the GCC to confirm the correct model, coil voltage, and connection size for their specific refrigeration or HVAC application before ordering.
Request a Quote for Solenoid Valve – Alco 240RA Series (Refrigerant, 2-Way NC)
Contact Seven Star LLC to request a quotation for the Alco Controls 240RA series solenoid valve. Our team can help confirm the correct orifice size, coil voltage, and refrigerant compatibility for your system, and support reliable delivery across Oman and the wider GCC region.
Ordering Notes
Please confirm your required orifice size, connection size, coil voltage, and the specific refrigerant used in your system when requesting a quotation, so Seven Star LLC can verify full compatibility and, where applicable, confirm the current pressure rating for the exact model revision being supplied.
Related Products
Copeland compressor models listed here
The page lists the Copeland ZR125KCE scroll compressor for commercial air conditioning and chillers, and two semi-hermetic reciprocating compressors: the D3DS5-1500 and the DWM Copeland D8SJ1-600X. An Alco 240RA series two-way, normally closed solenoid valve for refrigerant lines is listed with them.Ordering a Copeland compressor: what we need
Copy the complete model number and the serial number from the nameplate. The letters after the capacity digits and the motor code after the dash define the oil type and the electrical supply, so ZR125KCE-TFD is not the same item as another ZR125 variant. Add the refrigerant, the supply voltage, phase and frequency, and say whether the application is air conditioning or medium or low temperature refrigeration. For semi-hermetic models, mention the motor protection module and any unloaders or oil pump fitted. We quote to buyers across the GCC from this data.Browse Copeland products by category: Compressor, Cooling, Solenoid Valve.
Flow computers and remote controllers lead the Emerson listing here: the ROC800 series and the FloBoss 107 used for gas and liquid measurement at wellheads, metering skids and pipeline stations. Emerson, founded in 1890 and headquartered in St. Louis, USA, also stands behind Micro Motion Coriolis meters, Fisher FIELDVUE valve controllers and the DeltaV control system. Seven Star LLC, an independent supplier, sources these Emerson products and their spare parts for users in Oman and the GCC.
Reviews
There are no reviews yet.