Factory-Direct Components

Water Treatment Parts & Accessories for Industrial Systems

Industrial water treatment systems fail at their weakest component. We manufacture and supply eight categories of water treatment parts and accessories from one facility, so pressure ratings, connection standards, materials, and control interfaces can be checked as one coordinated engineering package.

Certified manufacturing
CE / ISO 9001
Factory-direct supply
70,500 sqm
Coordinated parts source
Eight Categories
Custom labels and specs
OEM / ODM
Export documentation
20+ Countries
Engineers / technicians
28 / 78
01
Component Categories

Water Treatment Parts and Accessories

We manufacture and supply the following water treatment parts and accessories. Each category routes to a dedicated product page with operating specifications, configuration options, and selection guidance.

P · 01
Industrial RO membrane elements — spiral-wound 8040 array for brackish and seawater systems

Reverse Osmosis Membranes

Spiral-wound TFC elements for brackish and seawater RO systems.

NaCl rejection >97% BW / >99% SW 4040 and 8040 formats TFC polyamide
Reverse osmosis membranes
P · 02
FRP RO membrane pressure vessel bank for 4040 and 8040 elements

Membrane Housings

FRP and stainless steel pressure vessels for 4040 and 8040 elements.

FRP to 150 psi / SW to 600 psi SS housings for CIP to 80°C Side and end port
Membrane housings
P · 03
Industrial multiport control valve actuator for softener and filter regeneration

Control Valves

Softener, filter, and process control valves with timer or demand-metered regeneration.

Cv/Kv sized to design flow Multiport, pneumatic, electric Fleck / Clack / Runxin
Control valves
P · 04
Multi-stage RO high-pressure pump assembly for brackish and seawater desalination

Pumps for RO Systems

High-pressure pumps matched to membrane count, recovery rate, and feedwater osmotic pressure.

15-25 bar BW / 50-80 bar SW VFD-compatible range Multi-stage centrifugal
Pumps for RO systems
P · 05
Water quality instrument panel with conductivity, pH, and flow transmitters

Water Quality Instruments

Inline monitoring sensors and transmitters for RO product water, pre-treatment, and distribution.

0.01-200,000 μS/cm range 4-20mA or Modbus RS-485 Conductivity, pH, flow, ORP
Water quality instruments
P · 06
UPVC and SS316 pipeline fittings on water treatment manifold

Pipeline Fittings

Pipe fittings, flanges, and adapters matched to treatment train pressure and material requirements.

PN6-PN25 pressure classes UPVC, CPVC, PP, SS316 NPT, BSP, flanged DN25-DN200
Pipeline fittings
P · 07
Industrial filter cartridge elements across micron ratings — PP, pleated, carbon block

Water Treatment Media and Filter Cartridges

Security pre-filter cartridges and bulk media for sediment, carbon, and specialty applications.

1-100 μm ratings PP, pleated, carbon block 10″, 20″, Big Blue formats
Water treatment media and filter cartridges
P · 08
CIP membrane cleaning skid with chemical dosing and inline pH monitoring

CIP Cleaning Systems for RO Membranes

Recirculation cleaning skids with chemical dosing, temperature control, and flush sequencing.

15-30% of design flow recirc 35-45°C cleaning temperature Inline pH monitoring
CIP cleaning systems for RO membranes
02
Compatibility Architecture

Every Component Ships to a Common Engineering Standard

Sourcing eight component categories from eight suppliers creates a coordination problem. Operating pressure, flow rate, material compatibility, connection standard, and control interface must be consistent across the full treatment train, not evaluated independently for each purchase order.

VariableEngineering Threshold / StandardConsequence of Mismatch
Operating PressurePump delivery head must not exceed housing pressure rating or downstream fitting PN class.A 25-bar pump with a 150 psi FRP housing is a design error that creates a safety hazard; we flag this before manufacturing and shipment.
Flow RatePump m³/h output, valve Cv/Kv rating, and membrane element count must match the same design flow.An undersized valve creates upstream pressure buildup, elevated transmembrane pressure differential, and accelerated membrane fouling before a visible alarm appears.
Material of ConstructionTFC membranes require zero free chlorine; standard FRP housings are limited to 45°C; SS housings sustain CIP circuits to 80°C.Free chlorine above 0.1 ppm degrades TFC irreversibly, and feedwater above the FRP temperature limit removes standard vessels from the selection set.
Connection StandardNPT, BSP, or flanged DN must be uniform across valves, fittings, pump ports, and housing end connectors.Mixed thread standards cause avoidable field rework; we pre-tap and pre-drill to the buyer-specified standard before shipment.
Control Interface4-20mA analog or Modbus RS-485 digital output must match instruments, actuated valves, PLC inputs, and controllers.A signal mismatch creates a controller blind spot, allowing product water quality drift to continue until a lab sample confirms the exceedance.
03
System Integration Risk

Mismatched Parts Don’t Fail Gracefully

The failure modes from component mismatch are not random. They follow predictable patterns our engineering team encounters when buyers come to us after field problems have already developed.

Failure · 01

Pressure Rating Mismatch

A seawater RO pump delivering 60 bar to a 300-psi-rated FRP vessel does not create slow degradation; it can create sudden housing failure at startup. Buyers replacing pumps must confirm the installed housing pressure rating before specifying pump delivery pressure.

Failure · 02

Wrong Flow Coefficient (Cv/Kv)

An undersized multiport valve can restrict softener backwash below the fluidization velocity needed to expand the filter bed. The bed compacts, suspended solids harden into a layer, and full media replacement may be required instead of a normal backwash cycle.

Failure · 03

Instrument Signal Incompatibility

A 4-20mA conductivity sensor wired to a Modbus-only controller produces no reading. In ultrapure water service below 1 μS/cm, that blind spot can let product quality exceedances pass undetected at the output stage.

We manufacture these components in-house so pressure ratings, connection standards, flow coefficients, and signal interfaces are coordinated during design and confirmed during quality inspection before shipment, not discovered during commissioning at a project site thousands of kilometres away.

04
Treatment Train Match

Components Matched to Your Treatment Train

The eight component categories do not serve every application equally. Treatment objective and source water conditions determine which components carry the performance risk and which operate in a supporting role.

Industrial reverse osmosis water treatment skid with FRP membrane housings and high-pressure pump
App · 01

Industrial RO Systems and Post-Treatment

RO membranes form the rejection barrier, housings must match pump delivery head, and instruments monitor conductivity, flow, and pressure. The sizing chain is source water TDS and recovery target to operating pressure, pump KW, housing pressure rating, and element count.

Boiler feedwater pre-treatment system with cartridge filter housings and control valve manifold
App · 02

Boiler Feedwater Treatment

Security pre-filters, regeneration valves, and conductivity monitoring affect boiler tube integrity and blowdown frequency. Regeneration valve Cv/Kv must be sized to cycle flow rates, which differ from service flow by valve type and tank diameter.

Boiler feed water treatment
Pharmaceutical RO ultrapure water system with CIP connection and conductivity monitoring
App · 03

Pharmaceutical and Electronics Ultrapure Water

High-rejection membranes, CIP cleaning, and conductivity monitoring below 1 μS/cm are load-bearing. A CIP skid without inline pH monitoring cannot confirm full chemical flush before product water collection resumes.

Deionized water filtration system
05
Factory Capability

One Factory, Eight Coordinated Component Families

Our Qingdao facility manufactures all eight categories under a single CE and ISO 9001 quality system, with OEM and ODM scope across all categories.

Water treatment component assembly and quality inspection workshop in Qingdao factory
Service · 01

In-House Manufacturing

All eight component categories are fabricated, tested, and inspected at our Qingdao facility under one ISO 9001 quality system, eliminating cross-supplier coordination risk.

Service · 02

OEM / ODM Across Categories

Custom labeling, packaging, modified connection dimensions, non-standard pressure ratings, proprietary end-cap configurations, and project-specific documentation packages.

Service · 03

Export-Ready Documentation

CE Declaration of Conformity, ISO 9001 quality certification, factory test reports for performance-critical components, material certificates, and packing lists with component serial numbers.

06
Send These Inputs First

Component Review Checklist

Send installed specifications and we confirm whether our water treatment parts are direct replacements or require adaptation.

Project Checklist · 08 Inputs
  • Component categories needed — membranes, housings, valves, pumps, instruments, fittings, cartridges/media, CIP
  • Treatment train context — industrial RO, boiler feedwater, pharma/electronics, municipal, F&B
  • Design pressure and flow — system operating pressure (bar/psi); design flow rate (m³/h)
  • Material requirements — TFC chlorine constraint, FRP temperature limit, SS for CIP
  • Connection standard — NPT, BSP, ANSI / DIN / JIS flanged, DN range
  • Control interface — 4-20mA analog or Modbus RS-485 digital; PLC make/model
  • OEM / ODM scope — labeling, packaging, modified specs, custom documentation
  • Documentation package — CE, ISO 9001 records, material certificates, third-party inspection
07
Reference

Frequently Asked Questions

Q.01Are your components compatible with existing systems from other manufacturers?+
Compatibility depends on the dimensional, pressure, and interface specifications of the installed system. For RO membranes, element format and brine seal must match the housing bore. For pumps, motor KW, shaft coupling, and flange size must match. Send installed specifications and we confirm whether our water treatment parts are direct replacements or require adaptation.
Q.02What replacement intervals should I plan for membranes, filter cartridges, and pump seals?+
Replacement intervals are project variables. RO membranes typically operate 2-3 years in municipal brackish service with proper CIP; inadequate pretreatment can foul elements in weeks. Prefilter cartridges commonly run 3-6 months. Pump seal life varies with operating conditions. We establish specific intervals based on your system profile.
Q.03Can Hiju manufacture components to a custom specification or OEM label?+
Yes. OEM and ODM manufacturing is available across all eight component categories. Custom scope may include modified connection dimensions, non-standard pressure ratings, proprietary housing end-cap configurations, specific wetted material grades, custom labeling, packaging, and documentation packages formatted to your project or brand requirements.
Q.04What documentation accompanies each component shipment?+
Standard shipment documentation can include CE Declaration of Conformity, ISO 9001 quality certification, factory test reports for performance-critical components, material certificates for wetted parts where required, and packing lists with component serial numbers. Pharmaceutical and regulated industrial projects should specify traceability or third-party inspection needs at order entry.
Q.05How do I determine which pump pressure rating and KW matches my RO system design?+
Required pump delivery pressure depends on feedwater osmotic pressure, recovery rate, membrane pressure drop, and back-pressure. Brackish RO typically requires 15-25 bar; seawater RO 50-80 bar. Motor KW derives from pump head, flow, and hydraulic efficiency and should not be selected in isolation.
Q.06Do you supply CIP membrane cleaning systems alongside your RO membrane elements?+
Yes. We recommend evaluating CIP membrane cleaning systems with new RO membrane procurement for industrial and pharmaceutical applications. Cleaning efficiency depends on chemical type, temperature, frequency, and cross-flow velocity; CIP recirculation is commonly sized at 15-30% of design system flow, with chemical temperature often controlled around 35-45°C.