Hydraulic & Heavy-Duty Filtration Manufacturer

Precision hydraulic filters, engineered for OEM supply.

H-YiFilter manufactures made-to-print hydraulic and heavy-duty filters — filter elements, housings, end caps and related machined parts — from an IATF 16949:2016 certified plant in Zhejiang, China, for OEM, Tier-1 and private-label supply programmes worldwide.

IATF 16949
:2016 certified, valid to Apr 2029
2020
Partner plant founded
20+ yrs
Team hydraulics experience
100 MPa
In-house high-pressure testing
Why OEMs Choose H-YiFilter

A filtration manufacturing partner, not just a part supplier

01

Full In-House Process

CNC machining, grinding, moulding, heat treatment, cleaning, assembly and testing — no subcontracted steps to track.

02

IATF 16949 Quality System

Automotive-grade process control applied to every hydraulic filter and filter element we ship.

03

OEM & Private-Label Proven

Already manufacturing private-label hydraulic filtration product for a leading global hydraulics/filtration brand.

04

Competitive China Manufacturing

Zhejiang-based production cost structure, without compromising certification or validation.

Capabilities

Integrated manufacturing, under one roof

CNC machining, grinding, injection moulding, heat treatment, cleaning and assembly run in-house — so quality and lead time stay in our control, not a subcontractor's.

01CNC Machining
02Grinding
03Injection Moulding
04Heat Treatment
05Cleaning
06Assembly
07Testing
Testing & Validation Lab

In-house metrology and hydraulic performance testing

Every hydraulic filter and filter element is machined, measured and performance-tested on site — dimensional metrology, pressure testing and cleanliness verification all run in our own lab, not a third-party facility.

Dimensional Metrology

CMM · Contourgraph · Roundness tester

Three-dimensional coordinate measuring, profile projection and roundness testing hold tight tolerances on sealing faces and threads.

Raw Material & Hardness Testing

Incoming batch inspection

Every incoming batch of steel, aluminium and filter media is verified for material properties and hardness before it enters production.

High-Pressure & Impulse Testing

to 100 MPa · 5–50 million cycles

In-house rigs run high-pressure testing to 100 MPa and 5–50 million-cycle pressure-impulse testing to validate housing fatigue life.

Air-Tightness & Water Testing

Filter housings & filter bases

Dedicated air-tightness and water-immersion test stands check every filter housing and filter-base assembly for leak-free sealing.

Tensile & Spring Testing

Tensile testing machine

Tensile and compression testing verifies spring force, bypass-valve cracking pressure and seal and weld strength.

Thread & Shadowgraph Inspection

Automated thread detector

Automated thread-gauging and shadowgraph profile checks catch out-of-spec components before they reach assembly.

ISO Cleanliness Lab

Particle-count verification

A dedicated cleanliness lab measures particulate contamination against ISO cleanliness codes for critical hydraulic filtration applications.

3D Scanning & Reverse Engineering

3D modelling

3D scanning supports reverse engineering and first-article inspection for custom, legacy and replacement filter designs.

Product Range

Hydraulic and heavy-duty filtration families

Typical maximum performance by product family. Exact specifications, availability and lead times are confirmed per RFQ.

Tank-Top & In-Tank Return-Line Filters

to 10 bar · to 2,400 L/min

In-to-out flow, magnetic pre-filtration and full-flow bypass.

Spin-On Hydraulic Filters

to 10 bar · to 360 L/min

Suction and return service, with optional indicators.

Medium-Pressure Filters

to 70 bar · to 600 L/min

Cast aluminium head and bowl with strong fatigue ratings.

High-Pressure Hydraulic Filters

to 207 bar · to 200 L/min

Compact aluminium housings with glass-fibre media.

In-Line Filters

10–40 bar · to 2,000 L/min

Low and medium-pressure designs for lube and gearbox circuits.

Duplex Filters

8–40 bar · to 2,200 L/min

Change elements without stopping the system.

Offline & Portable Filtration Units

3–6 bar · 15–38 L/min

Filtration carts and packages to clean fluid and remove water.

Filter Elements, Breathers & Indicators

Indicators to 420 bar

Glass-fibre and mesh replacement filter elements, air breathers, condition indicators.

Success Stories

Hydraulic filtration solutions proven in the field

A sample of the hydraulic and transmission filtration programmes we have engineered, validated and mass-produced for OEM customers — each built to a defined pressure and flow spec, not a generic catalogue part.

FAST Transmission Filter Element

Oil-gas separation · Noise reduction

Custom-engineered filter element for fast-transmission systems, combining oil-gas separation with noise and vibration reduction.

FAST Transmission Filter Housing

Fine particulate removal

Precision-machined aluminium housing for fast-transmission filtration, removing fine particulate to protect downstream components.

Spin-On Mounted Hydraulic Filter

10.3 bar · 180 L/min

Spin-on mounted filter supplied as a direct-fit OEM replacement for mobile hydraulic systems.

High-Pressure Filter — Agricultural Machinery

210 bar · 75 L/min

High-pressure hydraulic filter widely applied across agricultural machinery hydraulic circuits.

CN Series In-Line Filter

70 bar · 300 L/min

In-line hydraulic filter for medium-pressure circuits, built for continuous duty.

15P/30P Aluminium High-Pressure Filter

207 bar · 200 L/min

Aluminium high-pressure filter housing machined and assembled in-house to OEM drawing.

Return-Line Oil Filter

10.3 bar · 400 L/min

Return-line hydraulic filter for high-flow return circuits on mobile and industrial equipment.

Custom-Engineered Return Oil Filter

10 bar · 160 L/min

Return oil filter engineered to a customer's drawing and performance spec, from prototype to production.

Thermal Bypass Valve

227 L/min

Thermal bypass valve protecting hydraulic circuits during cold-start and high-viscosity conditions.

We also machine precision castings as an OEM supplier to a leading global hydraulics and filtration brand, and our filters are in service across agricultural, construction and industrial hydraulic machinery worldwide.

Markets

Where our filters work

Agricultural Machinery

Tractors, harvesters and implements: spin-on and high-pressure filters.

Heavy-Duty Trucks & Transmissions

Transmission filters and elements with oil-gas separation.

Construction & Material Handling

Return-line and pressure filters for mobile hydraulics.

Industrial Hydraulics & Lubrication

In-line and offline filtration for plant systems.

Quality & Track Record

Proven at production scale, not just on paper

We already manufacture private-label hydraulic filtration product for a leading global hydraulics/filtration brand — the same quality systems and cost discipline are available to your programme.

Certifications

IATF 16949:2016 and ISO 9001:2015 certified for the manufacture of filters and filter elements.

In-House Validation

Metrology, cleanliness, air-tightness, pressure-impulse and 100 MPa high-pressure testing on site.

Precision Machining

CNC turning and machining centres for housings, heads and end caps; double-disc and cylindrical grinding for sealing faces; automatic thread checking.

About Us

A manufacturing partner built for scale

H-YiFilter is the international B2B brand of Yuhuan Hongyi Filtration Technology Co., Ltd, a hydraulic and heavy-duty filtration manufacturer based in Zhejiang, China. The plant brings together CNC machining, grinding, injection moulding, heat treatment, cleaning, assembly and testing under one roof, and is IATF 16949:2016 and ISO 9001:2015 certified.

Our international sales, marketing and technical support are handled by our overseas partner, NovaTask Supply LLC, which works directly with OEM, Tier-1 and private-label customers worldwide — managing quoting, programme support and supply-chain coordination outside China.

The business has grown consistently alongside our customers' programmes, with steady year-on-year gains in both headcount and manufacturing output.

200+
Employees
2020
Plant founded
Revenue growth
~15%
YoY, 2021–2026
¥0.18B
2025 revenue (RMB)
¥0.2B
2026 revenue (CNY)
FAQ

Common questions from OEM & procurement teams

What types of hydraulic filters does H-YiFilter manufacture?

Tank-top and in-tank return-line filters, spin-on filters, medium- and high-pressure filters, in-line filters, duplex filters, offline/portable filtration units, and filter elements, breathers and indicators.

Does H-YiFilter produce OEM and private-label hydraulic filters?

Yes. We already manufacture private-label hydraulic filtration product for a leading global hydraulics/filtration brand, and supply OEM and Tier-1 programmes built to customer drawings and specifications.

What certifications does the plant hold?

IATF 16949:2016 and ISO 9001:2015, certified for the manufacture of hydraulic filters and filter elements.

Can you manufacture to our drawing or spec?

Yes — send a drawing, spec, or target application and performance range through the quote form below, and we'll return a feasibility review and quotation.

Do you offer replacement / interchangeable filter elements?

Yes, including glass-fibre and mesh elements, air breathers and condition indicators rated to 420 bar, cross-referenced to common industry part numbers on request.

Buyer's Guides

Explore filtration by application

Focused spec sheets and proof points for the most common hydraulic filter sourcing briefs we receive.

Let's Talk

Request a hydraulic filter quote

01

Share your drawing or specification

Send your drawing, spec, or target application and performance range.

02

Feasibility & quotation

We review feasibility and return a quotation.

03

Samples & validation

Samples and validation with your engineers.

04

Series supply

Series supply from an IATF 16949 certified plant.

Email: [email protected] / [email protected] Sales: [email protected] Phone: +86 139 5737 6914 Yuhuan, Taizhou, Zhejiang, China