
Corrosive-process liquids · evaporation loops · liquid-ring vacuum
Jiangsu Shuangheng Pump & Valve Manufacturing Co., Ltd.
Jiangsu Shuangheng’s catalogue spans several different process tasks: transfer a chemical liquid, circulate an evaporator loop, or extract gas under vacuum. Start with that task before choosing a material or pump code. Its IH, IT, ZA, FJXP and SBE documentation provides useful construction and selection details, but the liquid-pump and vacuum figures describe different equipment and must stay separate.
- Chinese legal name
- 江苏双恒泵阀制造有限公司
- Published location
- Xinqiao, Jingjiang, Jiangsu
- Reviewed directions
- IH · IT · ZA · FJXP · SBE
- Product profile on KanBeng
- IH chemical centrifugal family
What must the equipment move: liquid, loop inventory or gas?
A corrosive-process enquiry often contains both a circulation duty and a gas-handling duty. Issue separate data sheets for them. A liquid flow in m³/h is not the same specification as gas capacity in m³/h at a stated suction pressure. The SBE equipment is not an alternative hydraulic size of the existing IH product record.
| Your process task | Catalogue direction | Selection information that changes the order |
|---|---|---|
| Chemical-liquid transfer | IH single-stage, single-suction centrifugal pump | Liquid composition, concentration, temperature, suction conditions and seal services. |
| Corrosion-resistant wetted construction | IT titanium direction | Component-by-component material schedule; the reviewed page specifies TA2 for wetted parts. |
| Process service with a defined support arrangement | ZA / ZAO / ZE direction | Actual configuration, operating curve, pressure/temperature basis, solids and the required project standard. |
| Large circulating flow around an evaporator | FJXP forced-circulation direction | Loop resistance, recirculating liquid properties, suction pressure and exact table designation. |
| Gas extraction in a vacuum-dechlorination process | SBE titanium liquid-ring vacuum direction | Gas load at stated absolute suction pressure, discharge conditions and working-liquid circuit. |
IT: specify the wetted parts rather than relying on the family title
The IT page describes a single-stage, single-suction cantilever centrifugal construction of the same general type as IH. Although its heading refers to titanium, nickel and zirconium, the detailed material statement specifies TA2 for components contacting the medium and HT for other components. That statement does not identify a supplied nickel or zirconium grade, or a detailed HT grade.
For a corrosive service, provide the complete liquid composition and concentration, temperature range, impurities, solids and cleaning conditions. Ask the supplier to identify the casing, impeller, shaft protection, fasteners, seal faces and secondary seals in the offered material schedule. A list of chemical-industry applications does not establish compatibility with every concentration or mixed liquor.
The page offers mechanical or packing seals. Choose the seal arrangement with the process containment requirement and available flush or cooling services. The illustrated motor and base show a catalogue assembly; they do not establish the electrical supply or hazardous-area approval of the assembly quoted for your project.

IH: keep the hydraulic selection and withdrawal space together
The IH documentation gives a family design-point range of 6.3–400 m³/h and 5–125 m head, a maximum design working pressure of 1.6 MPa, and a liquid-temperature interval of −20 to +105°C. These are catalogue family limits. They are not one pump’s simultaneous duty point or approval for every material and seal combination.
IH50-32-160 is the designation example: 50 mm suction, 32 mm discharge and 160 mm nominal impeller diameter. The offered size, speed, impeller trim, curve and suction requirement still need to be specified. The page references ISO 2858-1975 for performance/dimensional designation; that historical catalogue reference is not a current test certificate.
The axial inlet and vertical outlet accompany a back-pull-out arrangement. The extended coupling described on the page allows the rotating assembly to be withdrawn without removing the connected casing, pipework or motor. Confirm the actual coupling and withdrawal dimension on the supplied drawing, and leave maintenance space behind the pump.
For the ZA/ZAO/ZE process direction, the source presents a 250 m head maximum in one block and 300 m in another, with different temperature/support statements. Its standard reference is also written ambiguously. Ask for the selected configuration’s data sheet and the required standard edition; this profile does not convert those mixed statements into a single performance guarantee.

View the reviewed product family →
FJXP: a large circulating flow can require only a few metres of head
Shuangheng describes forced circulation of acidic, alkaline or neutral liquids with small amounts of solids, including evaporation processes. For an enquiry, specify the circulating flow around the actual heat exchanger and pipe loop, rather than substituting net plant output or treating the pump as a high-head feed pump.
The page is titled FJXP, while its parameter table labels the example rows FJX. Keep that distinction visible on the quotation. The two rows below each have a complete flow/head/speed combination and separate shaft and motor power entries; larger rows contain blank motor cells, so this profile does not fill them by inference.
| Table designation | Flow / head / speed | Shaft power / motor power |
|---|---|---|
| FJX-250 | 300 m³/h · 2.5 m · 980 r/min | 3.4 kW · 7.5 kW |
| FJX-300 | 520 m³/h · 3 m · 980 r/min | 6.8 kW · 11 kW |

Describe the operating loop
Provide liquid density, viscosity, solids/crystal loading, evaporation temperature, operating pressure and minimum suction level. Include the heat-exchanger and piping losses at the required circulating flow, startup conditions and cleaning cycle.
Define the seal services
The page mentions packing and auxiliary-impeller/mechanical-seal arrangements. Ask which arrangement is offered, what external services it needs and how startup and shutdown are handled. The family temperature and pressure maxima do not settle the seal configuration.
SBE: specify gas suction conditions and the working-liquid circuit
SBE is presented as a horizontal, single-stage liquid-ring titanium vacuum pump for vacuum dechlorination in ion-exchange-membrane caustic-soda production. The page offers direct, belt or reducer drive arrangements. A gas-handling selection needs the gas load at a defined absolute suction pressure and the receiving-header pressure, together with the working liquid and its cooling/recirculation scope.
The documented temperature intervals are 10–40°C for the extracted gas and 0–35°C for the working liquid. The page also gives alternative suction-pressure ranges and describes a particular dechlorination process. Those statements do not define one universal capacity point or discharge-pressure guarantee. Request the exact capacity curve and the basis of every pressure value.
Prepare gas composition, moisture and possible entrained liquid or solids, working-liquid composition and temperature, separator requirements and the available utilities. For a chlorine-bearing process, agree containment, exhaust routing and process safeguards with the responsible project designer. A reference to vacuum service is not approval for a complete installed gas-treatment system.
Make the material and test records part of the supply scope
The company profile describes mechanical manufacture, hot/cold processing, investment casting and a pump-performance test centre. Treat these as company-described facilities and request records for the order: material identification, approved drawings, inspection points and the selected pump’s performance-test conditions. A facility description alone does not identify which parts will be made or tested for your assembly.
The exact Chinese legal name appears in the Jingjiang section of a Taizhou municipal credit-portal notice carrying the local enterprise credit-management association’s 7 August 2026 list. This cross-check supports the supplier identity and locality. It is not a product-performance test or a certificate for the pump you are buying. The older ISO references on the company website are not presented here as current model certification.
Freeze the selection
Agree one duty data sheet per pump, its model/speed/trim, material schedule and support/drive arrangement before treating quotations as comparable.
Agree the package boundary
List the motor, coupling or transmission, base, guards, seal auxiliaries and instruments. For SBE, separately list the working-liquid circuit and separator; for a circulation loop, document interfaces to the heat exchanger.
Plan acceptance and maintenance
Specify the test basis and records, nameplate identification, dimensional checks, commissioning responsibilities and replacement seal/impeller or vacuum-pump wear parts. Agree delivery and documentation language in the purchase scope.
Build separate liquid, circulation and vacuum data sheets
Liquid transfer and material selection
- Composition, concentration, contaminants, temperature and density/viscosity.
- Normal/minimum/maximum flow and head, suction pressure/level and operating range.
- Required wetted materials, seal containment and flush/cooling services.
Evaporator or gas-handling duty
- Circulation: loop flow, resistance, solids/crystals, pressure and startup/cleaning conditions.
- Vacuum: gas load at absolute suction pressure, discharge header and working-liquid conditions.
- Installation drawing, drive arrangement, utility availability and maintenance space.
Order documents
- Selected curve, component schedule, approved drawing and electrical configuration.
- Inspection/test plan, material records and any project-specific certificate scope.
- Quantity, destination, target date, spares and commissioning boundary.
Submit through KanBeng’s enquiry form with this factory named in your request.
Research basis and product selection
Reviewed on 8 October 2026 from Shuangheng’s company and individual product documentation, with a government-hosted local association notice for identity cross-checking. Use the IH product profile for its documented operating envelope. For IT, ZA, FJXP or SBE enquiries, prepare a separate duty sheet and request the exact catalogue designation and offered configuration.
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