Ningguo Kingcool Import and Export Co., Ltd supplies refrigeration control valves, fittings and components as part of a one-stop appliance and HVAC parts programme. Our range covers split A/C valves, four-way reversing valves, pressure-actuated water control valves, hand valves, brass ball valves, quick couplers, charging adapters, angle valves, connect tubes and disperse-type branch pipes.
These parts sit on the refrigerant circuit between the compressor, condenser, expansion device and indoor unit. They set the working pressure boundary, the service access points and the connection geometry of the system, so they are specified together with the refrigerant, the pipe size and the installation method rather than as isolated items.
Our Position in Refrigeration Control Valves and Fittings
As a Refrigeration Parts-Control Valve & Fitting & Component Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.
Kingcool combines industry and trade. We produce metalized polypropylene film capacitors on high-precision slitting and winding equipment, and we have developed into an agent and supplier for air conditioner and refrigerator accessories with a broad catalogue of refrigeration, washing machine and home appliance parts. That dual role lets us quote valves, fittings and components alongside capacitors, motors, thermostats and control boards for the same project.
For the Control Valve & Fitting & Component family, our work is matching the valve body, connection size and sealing material to the refrigerant and the line layout the customer is building. We serve distributors, service networks and appliance or refrigeration assembly projects that need repeatable part numbers rather than one-off pieces.
Product Range and Where Each Type Fits
The range is organised by function on the refrigerant circuit. Each type below is a stocked or sourced item in our refrigeration parts programme, and the table shows the typical duty and the data we need to confirm a match.
| Product Type | Circuit Function | Typical Application | Key Data to Confirm |
|---|---|---|---|
| Split A/C Valve | Isolation and service access on split systems | R134a, R410A, R407C, R32 split units | Refrigerant, max working pressure, port size |
| Four-Way Valve | Heating/cooling reversal in heat pump circuits | Reversible split and packaged units | Capacity, coil voltage, capillary pairing |
| Pressure Actuated Water Control Valve | Water flow control on condenser side | Water-cooled condensers, chillers | Inlet/outlet size, control pressure range |
| Hand Valve / Brass Ball Valve | Manual shut-off and line isolation | Service lines, manifolds, test rigs | Body material, thread standard, bore |
| High Pressure Quick Coupler | Fast, leak-tight service connection | Charging, evacuation, pressure testing | Working pressure, hose end, seal material |
| Refrigerant Adapter Kit CH-135 | Auto charging adapters and hoses | Service kits, 1/4" M x 1/4" F connections | Kit contents, packing format |
| Charging Horse With Ball Valve | Charging line with shut-off control | Field charging and recovery | Hose length, ball valve position |
| Angle Valve / Connect Tube | Directional connection and tube routing | Indoor/outdoor unit connections | Tube diameter, flare or solder end |
| Disperse Type Pipe (Branch Pipe) | Refrigerant distribution to multiple branches | Multi-split and VRF piping, Daikin and Hitachi patterns | Branch count, inlet/outlet diameters, material |
Refrigerant, Pressure and Material Considerations
Valve selection starts with the refrigerant. R410A and R32 operate at higher pressures than R134a, so the body rating, seal compound and connection design must be matched to the circuit rather than carried over from an older R22 platform. Our split A/C valves are quoted for R134a, R410A, R407C and R32 service, with a maximum working pressure of 4.2 MPa on the valve range shown on the category.
- Body and trim: brass bodies with copper or brass tube ends are standard for service and isolation valves; confirm the thread standard (metric, BSP or flare) before ordering.
- Sealing: elastomer seals must be compatible with the refrigerant and the lubricating oil in the circuit; POE oils used with R410A and R32 behave differently from mineral oil.
- Pressure boundary: state the design working pressure and the test pressure used at acceptance, not only the nominal system pressure.
- Tube ends: flare, solder or threaded ends change installation time and leak risk; the branch pipe range is produced in multiple specifications and models to suit different piping layouts.
Configuration Options We Quote
Most items in this family are configured rather than simply picked from a shelf. When a project needs a variant, we confirm the following before quoting:
- Connection size and end type — flare, solder, threaded or hose.
- Valve operation — manual, pressure actuated, solenoid or reversing.
- Accessory fittings — charging ports, caps, ball valve position on charging hoses, adapter kit contents.
- Branch pipe geometry — number of branches, run diameters and the brand pattern the piping must match.
- Packing format — bulk, blister card or kit, as required for the sales channel.
Where a customer supplies a sample or a drawing, we work from that reference so the replacement part matches the original connection envelope. Related items such as Capillary Tube and Refrigeration Parts are quoted on the same order when the circuit needs them.
Installation, Commissioning and Serviceability
Control valves and fittings are installed at the point where the line is brazed or flared, so installation quality drives field performance. We supply parts that support standard service practice: isolation valves that allow pump-down and component replacement without losing the full charge, quick couplers that speed up evacuation and charging, and hand or ball valves that give a positive shut-off during maintenance.
- Keep brazing heat away from seals; wrap or wet the valve body during soldering.
- Pressure-test and evacuate before charging; quick couplers and adapters should hold vacuum without leaking.
- Check four-way valve coil voltage and capillary routing against the wiring diagram before energising.
- Record the valve position and port orientation so replacement parts can be reordered by the same reference.
Quality Approach and Acceptance
Our capacitor production runs on high-precision slitting and winding equipment with testing equipment monitoring output during production, and the same discipline of incoming inspection and outgoing checking applies to the parts we source and supply. For valves and fittings, the practical acceptance points are dimensional conformity, thread and flare gauging, seal condition, and a pressure or leak check on the agreed sample.
We confirm the inspection items and the sampling level with the customer before shipment, and we can supply the part reference, material statement and packing list with the order so the goods can be received and checked against the purchase specification.
Information We Use to Configure Your Solution
To prepare a workable configuration and quotation for control valves, fittings and components, we work from the following project inputs. The more of these that are fixed at enquiry stage, the fewer clarifications are needed later.
- Refrigerant and oil: R134a, R410A, R407C, R32 or other, with the lubricant type.
- Working conditions: design working pressure, test pressure and operating temperature range.
- Connection: port size, thread standard, flare or solder end, hose bore.
- Function: isolation, reversal, water regulation, charging or distribution.
- Reference: original part number, drawing, photo or physical sample.
- Quantity and packing: order volume, kit or bulk packing, labelling and carton marking.
- Destination: delivery country and port so packing and documentation match the route.
Documentation, Packing and Delivery Scope
Orders are packed to suit the channel: service kits in blister cards, bulk valves in cartons, and branch pipes protected against deformation in transit. We issue a packing list and commercial documentation with each shipment, and we can mark cartons with the customer's part number where that helps warehouse handling.
Because we also supply Air-Conditioner Parts and refrigerator accessories, valves and fittings can be consolidated with capacitors, motors, thermostats and control boards in one shipment, which reduces the number of suppliers a project has to coordinate.
Frequently Asked Questions
Which refrigerants can your control valves and fittings handle?
Our split A/C valve range is quoted for R134a, R410A, R407C and R32 service, with a maximum working pressure of 4.2 MPa on the models shown. For other refrigerants, we confirm the seal material and pressure rating against the circuit conditions before quoting.
Can you match an original valve or branch pipe from a sample?
Yes. Send the original part number, a drawing, a photo with dimensions or a physical sample. We compare the connection size, thread or flare type, body material and port layout, then quote the closest matching configuration. Disperse-type branch pipes are produced in multiple specifications and models, including patterns used for Daikin and Hitachi piping.
Do you supply service kits as well as individual components?
We supply both. The refrigerant adapter kit CH-135 is an example of a complete kit with auto charging adapters and hoses in blister packing on a card, with 1/4" M x 1/4" F connections. Individual valves, couplers and fittings are supplied in bulk cartons or in the packing format the customer's sales channel requires.
How do you handle quality checks on valves and fittings?
We agree the inspection items and sampling level with the customer before shipment. Typical checks cover dimensions, thread and flare gauging, seal condition and a pressure or leak test on the approved sample. The part reference and packing list travel with the order so goods can be checked on receipt.
Can valves and fittings be combined with other appliance parts in one order?
Yes. As a supplier of air conditioner and refrigerator accessories, we consolidate control valves, fittings, capacitors, motors, thermostats and control boards into a single shipment. That one-stop arrangement is how most of our distribution customers order, and it keeps part numbers and delivery documents aligned across the whole parts list.
