Taizhou Huixin Pump Manufacturing Co., Ltd.

Huixin’s company page identifies pressure-test pumps and pressure-testing devices as its specialism, with custom test equipment and test-system services available. The product pages describe hydraulic testing of pressure vessels, pipelines, valves and steam boilers, as well as high-pressure liquid supply for laboratories and equipment for hose or cylinder burst tests. Those are different test objectives; specify proof, leakage, functional or destructive testing before selecting the machine.

For a cylinder or valve workshop, start with the component drawings and the approved test procedure. For a site pipeline test, start with the isolated test section, filling volume, available water and power, and the required pressure history. A pump’s maximum pressure cannot establish the allowed test pressure of the component or prove that a fixture is suitable.

The SYL manual tables state delivery in millilitres per operation, not litres per minute. The compact SYL-20/2.5–8/6.3 group lists three selections with a shared 320 × 195 × 515 mm envelope, 12 kg weight and 170 N maximum handle force. They are pressure/displacement choices within the group, rather than one pump producing every listed combination.

The taller SYL-22/6.3–1.2/130 group trades displacement for much higher pressure. SYL-22/6.3 is listed at 22 mL per operation and 6.3 MPa with 290 N maximum handle force; SYL-3/63 is 3 mL and 63 MPa with 410 N; SYL-1.2/130 is 1.2 mL and 130 MPa, also with 410 N. The last two are listed at 753 × 205 × 1,036 mm and 26 kg. The 130 MPa entry is not the pressure capability of the 22 mL entry.

This distinction matters when choosing equipment for a large cavity. A small displacement hand pump may be useful for the pressure stage after filling, while the overall test arrangement needs a separate filling plan. Ask for the selected pump’s operating instructions, compatible liquid, tank and hose scope, pressure gauge range and rated fittings. Do not infer a filling rate from an assumed operator stroke frequency.

The electric 4DY table gives two delivery columns: high-pressure and low-pressure flow, both in L/h. For example, 4DY-400/6.3 is listed at 6.3 MPa with 400 L/h high-pressure delivery and 1,200 L/h low-pressure delivery. The table does not say that 1,200 L/h is available at 6.3 MPa. Obtain the actual pressure at which the filling stage operates and the changeover/control arrangement.

The displayed group shares a 3 kW Y100L2-4 motor, 126 reciprocations per minute, 865 × 480 × 1,105 mm dimensions and 215 kg weight. The table specifies no supply voltage for that motor. Include site voltage, frequency, starter/control scope and protection in the offer rather than assigning a voltage from a motor designation.

At the same listed motor power, the catalogue offers progressively smaller high-pressure deliveries as the pressure rating rises. A buyer comparing cycle time should use the selected row and the test volume, not the largest flow and largest pressure from different rows. Allow for the filling, stabilisation, hold and depressurisation stages of the approved procedure.

Huixin lists a customisable CO₂ cylinder pressure-test device with a 0–50 MPa range and a customisable YFC valve pressure-test bench with a 0–100 MPa range. These are manufacturer-listed equipment ranges, not instructions to test every cylinder or valve at those pressures. The applicable component procedure determines the actual pressure and hold requirements.

For cylinder work, specify cylinder geometry, neck/thread interface, material and condition, the required test method and the measurement/reporting result. Ask whether filling, air removal, drainage, guarding and traceable pressure measurement are included. The catalogue listing alone does not establish a cylinder requalification approval or an automated volumetric-expansion measurement system.

For a YFC valve bench, supply the valve size, connection type, pressure class, test direction and required shell/seat tests. Agree the fixture sealing and restraint, permitted leakage criterion, pressure-control sequence and inspection access. If test reporting is required, state the pressure/time records, instrument calibration and witness requirements in the contract.

A customised bench should be accepted against an agreed layout and test sequence with defined supply boundaries. Separate the pump and control assembly from fixtures, adapters, hoses, measuring equipment, guards and site services so that quotations cover the same task.

The official high-pressure cleaning page is headed 3DY high-pressure pumps / 3DQ cleaning machines. Its selection sheet pairs pump and cleaner designations. A cleaning enquiry needs the nozzle duty, liquid supply, hose/gun ratings, cleaning target and required drive/control arrangement. Confirm a signed selection sheet with explicit flow units and the exact designation of the supplied assembly.

Huixin also lists a four-cylinder brick-machine lubrication pump using water as the lubricant, with multiple outlets and pressure self-control available according to the user’s requirement. This is a machine-service application. Specify the brick machine’s outlet count, required pressure and water delivery, connection positions and pressure-control interface; do not buy it merely because its catalogue heading resembles a test-pump code.

For both directions, ask for wetted materials, water-quality limits, start/stop controls and spare seals or valves appropriate to the selected equipment. A catalogue photograph or similar designation cannot establish interchangeability with a hydrostatic test system.

The UK Health and Safety Executive’s GS4 guidance identifies the test assembly size, pressure and medium as central inputs, with a written system of work, segregation and maintained connectors as key requirements. For a Huixin purchase, translate those points into a specification for the complete assembly and the operator’s location. This guidance informs the test-system scope; it is not certification of Huixin equipment.

Agree instrument range and calibration records, connector and hose pressure ratings, fixture restraint, isolation and controlled depressurisation, and the protection needed for the actual test. Identify which parts the equipment supplier provides and which are designed or installed by the buyer’s competent test engineer.

Repeated component testing also needs an inspection and replacement plan for adapters, threads, seals and hoses. Ask for the selected equipment’s maintenance instructions and service parts, and include an acceptance demonstration of the agreed controls and measurement functions. A pressure gauge in the photograph does not establish traceability or the accuracy of the complete bench.

Before placing an order, request an equipment-specific quotation, selection sheet, general arrangement, connection schedule and operating/maintenance instructions. The offer should identify the pressure source separately from the fixtures and measuring system, and state the records and demonstrations used for acceptance.

Submit through KanBeng’s enquiry form with this factory named in your request.