🌍 Wuxi, China  ·  Serving customers globally sales@dptwx.com  ·  IATF 16949  ·  ISO 9001 & 14001
🔩 Fluid Solutions Integrator

Engineering Fluid Systems.
Delivering Global Quality.

DPT connects specialist manufacturing with demanding customers across four domains: SCR thermal management, automotive A/C, OEM engineering solutions, and industrial fluid systems.

Group at a Glance
5+
Facilities in group
105,500+
m² total facility area
25+
years manufacturing experience
1,372
A/C hose SKUs
IATF 16949ISO 9001 ISO 14001OHSAS18001
What We Do
Four Business Domains

DPT operates as a fluid solutions integrator — managing quality, engineering and supply across four specialist areas, all under one commercial roof.

⚙️

SCR Thermal Management

Coolant control valves for diesel SCR systems. Fully customisable, IP69K rated, operational to –40°C. Serving leading heavy equipment OEMs globally.

IP69K–40°C12V / 24VIATF 16949
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🌡️

Automotive A/C Solutions

1,372-SKU A/C hose assembly catalog for R134a and R1234yf. SAE J2064 Type C barrier construction. Comprehensive OE and aftermarket coverage.

1,372 SKUsR134a & R1234yfSAE J2064
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🏭

OEM Solutions

Custom engineering and manufacturing across fluid tanks, hoses, moulded components and complex assemblies. From concept through PPAP-validated serial production.

DEF / Fuel tanksCustom designPPAP
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💧

Industrial Fluid Systems

High-pressure water piston pumps, hydraulic valves, cylinders and complete water hydraulic systems. Built for energy, fire protection, nuclear and heavy industry.

Fire protectionEnergy / NuclearCCS certified
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Capabilities
Engineering. Manufacturing. Testing.

A full-cycle product development and supply capability, from concept to validated serial production.

📐

Engineering Design

3D CAD (PTC-Creo / SolidWorks), FEA structural analysis, CFD fluid dynamics simulation. 3D printing for rapid prototyping. Industrial engineering and technical benchmarking.

🏗️

Manufacturing Range

Assembly, machining, blow moulding, rotational moulding, injection moulding, fabrication and welding across 35,000+ m² of group facility. High-mix and high-volume capable.

🔬

In-House Testing

Environmental test chambers, air leak testing, vibration platforms, flow and durability testing, contamination resistance. Full end-of-line testing on every batch.

📋

Quality Systems

All facilities certified to ISO 9001. Multiple facilities hold IATF 16949, ISO 14001 and OHSAS18001. Documented OQC records on every shipment.

🚢

Supply Chain & Logistics

Complete packaging, labelling and logistics from Wuxi. Sea and air freight. TecDoc-compatible data for aftermarket customers. Flexible MOQ for catalog products.

🌐

Global Support

Established commercial relationships across Europe and North America. Local representatives in key markets. Building support locations globally to serve customers closer to their operations.

Business Area

SCR Thermal Management

Coolant control valves engineered for heavy-duty diesel SCR systems. Designed to perform reliably in the harshest environments — from arctic cold to high-temperature engine bays.

Solutions
SCR Coolant Control Valve

SCR coolant control valves are used in Selective Catalytic Reduction (SCR) systems to regulate the flow of coolant, typically to the DEF (Diesel Exhaust Fluid) tank, to manage the temperature of the DEF and prevent freezing or overheating.

These valves are crucial for maintaining the optimal operating temperature of the SCR system, ensuring efficient NOx (nitrogen oxide) reduction.

Coolant Control Valve

The Features needed to Prevent Downtime

  • IP69K RATED SEAL CONNECTOR compatibility

    Epoxy molded Class F coil suitable for high temperature requirements. Sealed design for high moisture, high pressure, and intermittent submersion enviorments.

  • COLD WEATHER FUNCTIONG

    Normal Functioning in low temperatures up to -40°C

  • DEBRIS RESISTANT DESIGN

    Retains valve performance when exposed to coolant contamination

  • FLEXIBLE COIL ORIENTATION

    Allows Easy Installation in tight spaces

  • HEAT-RESISTENT STRUCTURE

    Overmolding to avoid cracking during thermal expansions

Standard Configuration Options
Voltage
12V or 24V DC
Seal rating
IP69K / IP65
Port options
1/2" or 5/8" brass
Min temperature
–40°C
Mounting
2-bolt / header integrated
Connector
ISO 15170 A1-2.3
Validation Test Suite
✓ High/low temp storage
✓ Combined env. test
✓ Leak test
✓ Salt spray
✓ Submersion test
✓ Durability
✓ Drop test
✓ Vibration
✓ Flow & pressure drop
✓ Contamination resistance
✓ Opening voltage
✓ Service life
Business Area

Automotive A/C Solutions

A comprehensive catalog of A/C hose assemblies, pressure switches and fittings for R134a and R1234yf systems — built to exceed international quality standards.

A/C Hose Assemblies
1,372 SKUs. R134a & R1234yf. SAE J2064 Exceeded.

DPT's A/C hose assemblies cover 85+ vehicle brands and are cross-referenced against all major OE numbers. Barrier-type construction with 7 out of 12 SAE J2064 test categories exceeding the standard.

  • Permeation rate <3 kg/m²/yr — less than 30% of the SAE J2064 limit
  • Inner surface cleanliness 70–85% better than SAE limit — protects compressor
  • Temperature range –40°C to 135°C (SAE requires –30°C to 125°C)
  • H-NBR O-rings, compatible with both R134a and R1234yf
  • 100% air-tightness tested at 3.5 MPa per production batch
Key Technical Specifications
Hose constructionSAE J2064 Type C barrier
Burst pressure≥ 14.7 MPa Exceeds SAE
Permeation rate<3 kg/m²/yr Exceeds SAE
Cleanliness<80 mg/m² Exceeds SAE
High-temp rating135°C / 168h Exceeds SAE
Cold resistance–40°C / 24h Exceeds SAE
O-ring materialH-NBR (R134a & R1234yf)
Pulse fatigue150,000 cycles @ 125°C
Vacuum collapse<4% (SAE max: 20%)
Business Area

OEM Solutions

End-to-end OEM supply chain services. Custom engineering, prototyping and PPAP-validated serial production across fluid tanks, hoses, moulded components and complex assemblies.

OEM Engineering & Manufacturing
From Concept to Serial Production

DPT's group manufacturing network covers the full product lifecycle — from initial engineering design through prototyping, validation and high-volume production. We manage the supply chain complexity so you don't have to.

  • Custom design: 3D CAD, FEA structural analysis, CFD fluid dynamics
  • Rapid prototyping: 3D printing, short-run machining and tool design
  • Blow moulding, rotational moulding, injection moulding at scale
  • Fluid tanks (DEF, fuel), hoses (DEF, A/C), tee fittings and complex fluid assemblies
  • PPAP Level 2/3: dimensional reports, material certs, process capability studies
  • Complete supply chain services — packaging, labelling, logistics
Standard OEM Catalog Products
SCR Coolant Control Valves8+ configurations
Tee FittingsCustom configurations
A/C Hose Assemblies1,372 SKUs
DEF HosesMultiple specs
DEF TanksBlow moulded
Fuel TanksBlow moulded
Water Piston PumpsCWP & CSP series
Water Hydraulic ValvesDirection, digital, check
Engineering Tools
SolidWorksPTC-Creo FEA (Creo Simulate)CFD (FloEFD) 3D PrintingIn-house testing
Business Area

Industrial Fluid Systems

High-pressure water piston pumps, hydraulic valves and complete water hydraulic systems for energy, fire protection, nuclear power and heavy industry.

Single Stainless Steel Industrial Pump - Precision Type
Multi-Spec Stainless Steel Industrial Pump Set - Large Size
Multi-Spec Stainless Steel Industrial Pump Set - Standard Size
High-Pressure Pumping & Hydraulics
Mission-Critical Performance for Demanding Environments

DPT's industrial portfolio is built for environments where failure is not an option. From offshore drilling platforms to nuclear power stations, our pumps and hydraulic systems operate where performance and reliability are critical.

  • CWP series: 5 L/min to 350 L/min — high-pressure piston pumps
  • CSP series: 1 T/H to 70 T/H — large-volume seawater and process applications
  • Water direction valves, digital valves, check valves and cylinders
  • Complete water hydraulic transmission systems, turnkey supply
  • China Classification Society (CCS) certified for marine applications
  • Reference installations: offshore energy, nuclear power, state utility grid, precision manufacturing
Product Range
CWP series (high-pressure)5–350 L/min
CSP series (large-volume)1–70 T/H
Water direction valves3-way solenoid
Digital & check valvesMultiple configurations
Water hydraulic cylindersCustom specification
Complete hydraulic systemsTurnkey supply
Applications
Fire protection Offshore energy Nuclear power State utility grid Precision manufacturing Marine (CCS)
A/C Hose Catalog

OE Reference Catalog — 1,372 Part Numbers

Search by vehicle brand or OE part number. Covering 85+ vehicle brands for R134a and R1234yf systems.

Showing 0 of 1,372 OE references
Page 1 of 1
Looking for cross-references? Contact us with your current part number and we will provide a full cross-reference match including competitor equivalents and TecDoc data.
Quality Commitment

Built to Exceed Standards

All DPT facilities are certified to international quality management standards. Our products are designed, tested and validated to meet and exceed the applicable performance benchmarks.

5
Certified facilities in group
7/12
A/C test categories exceed SAE J2064
IP69K
SCR valve seal certification
100%
End-of-line pressure tested
Production QC — Every Batch
✓ 100% visual inspection
✓ Critical dimension measurement
✓ Material verification
✓ 100% air-tightness @ 3.5 MPa in water (3 min)
✓ Hydraulic strength @ 12 MPa (2 min)
✓ Routing and fitment verification
Available on Request
📋 Type test reports
📋 OQC batch inspection reports
📋 Certificate copies (all facilities)
📋 SAE J2064 performance data
📋 CCV validation test results
Certifications
Group-Wide Quality Standards

All DPT facilities hold internationally recognised quality management certifications. The table below lists the certified standards held across the group.

Facility Area / Scale Primary Products Certifications
DPT Wuxi
Headquarters		 Wuxi, Jiangsu SCR Coolant Control Valves, Water Piston Pumps, Water Hydraulic Valves ISO 9001 IATF 16949 compliant
A/C Manufacturing Facility
Longquan, Zhejiang		 7,000 m² · 136 staff
Est. 1998		 A/C hose assemblies, pressure switches, fittings IATF 16949 ISO 9001 ISO 14001
Moulding & Plastics Facility
Changzhou, Jiangsu		 50,000 m²
Group subsidiary		 Injection moulding, blow moulding, DEF/fuel tanks, fluid system housings IATF 16949 ISO 9001 ISO 14001
Heavy Equipment Hydraulics Facility
Qingdao, Shandong		 40,000 m²
Est. 1993		 Water hydraulic valves, cylinders, complete hydraulic systems ISO 9001 ISO 14001 OHSAS18001
Automotive Parts Facility
Shanghai		 5,500 m² · 150 staff
Est. 2013		 Automotive fluid system components, DEF hoses IATF 16949 ISO 9001
All DPT facilities operate under ISO 9001. Multiple facilities additionally hold IATF 16949, ISO 14001 and OHSAS18001, reflecting the group's commitment to automotive quality, environmental management and occupational safety across all operations.
About DPT

Your Fluid Solutions Partner

DPT Fluid Tech (达谱特科技) is a Wuxi-based fluid solutions integrator. We connect specialist manufacturing with demanding OEM and aftermarket customers across Europe, North America and beyond — managing quality, logistics, engineering and customer relationships end to end.

Why DPT
Six Reasons Customers Choose Us

From guaranteed quality to one-stop purchasing — here is what sets DPT apart as a supply partner.

🛡️

Guaranteed Quality

We enforce strict supplier screening and audits, with QA teams monitoring production in real time. Any issues are promptly resolved to ensure customer satisfaction. Our professional after-sales team provides timely solutions without affecting your operations.

💡

Technical Solution Support

Work with your dedicated Project Manager to streamline workflows, reduce costs and speed up timelines. We offer expert advice on material alternatives, manufacturing methods and design optimisations — at no extra cost.

💰

Competitive Pricing

Cost-effectiveness is a top priority. By strategically partnering with pre-vetted manufacturing facilities across project phases, we minimise expenses without compromising quality.

⏱️

Short Lead Times

Continuous monitoring of facility capacity ensures rapid project deployment, enabling quicker production cycles and minimised delays. We keep you informed at every stage.

🔄

One-Stop Purchasing

Our complete supply chain system provides one-stop service — shortening project management time, reducing procurement risk and saving total cost. Standard products, machining, moulding, welding and fabrication all under one roof.

✅

Quality Control System

All facilities are ISO 9001, ISO 14001, and/or IATF 16949, and/or OHSAS18001 certified. Documented OQC inspection records are provided with every shipment on request.

Our Group
DPT Manufacturing Network

DPT operates as an integrator across a group of five specialist manufacturing facilities. Each delivers deep expertise in its domain under shared quality and commercial standards.

SCR & Valve Manufacturing

Wuxi, Jiangsu · 3,000 m² · 42 employees

SCR coolant control valves and water hydraulic components. Fully customisable valve configurations for heavy-duty OEM applications.

ISO 9001IATF 16949 compliant

A/C & Thermal Components

Longquan, Zhejiang · 7,000 m² · 136 employees · Est. 1998

A/C hose assemblies, pressure switches and fittings for R134a and R1234yf systems. 25+ years of automotive A/C manufacturing experience.

IATF 16949ISO 9001ISO 14001

Plastics & Moulding

Changzhou, Jiangsu · 50,000 m² · Group subsidiary

Injection and blow moulding at scale. DEF tanks, fuel tanks and complex moulded fluid system housings for global OEM customers.

IATF 16949ISO 9001ISO 14001

Industrial Hydraulics

Qingdao, Shandong · 40,000 m² · Est. 1993

Water hydraulic systems, valves and cylinders for energy, marine and heavy industry. CCS certified for offshore and marine applications.

ISO 9001ISO 14001OHSAS18001

Automotive Parts Manufacturing

Shanghai · 5,500 m² · 150 employees · Est. 2013

Automotive fluid system components and DEF hoses. Established supply base for commercial vehicle OEMs and Tier-1 suppliers.

IATF 16949ISO 9001
Timeline
Our History
1993–1998
Industrial hydraulics and A/C manufacturing operations established. First supply contracts with North American aftermarket brands.
2012
IATF 16949 certification achieved at A/C facility. Expanded North American aftermarket supply.
2018
DPT Fluid Tech founded in Wuxi. SCR valve and water pump product lines launched. Core engineering team from Sany Heavy Industries and HUST-Wuxi Research Institute.
2019–2020
Largest-flow seawater pump installed on CNOOC offshore drilling platform. SCR CCV enters serial supply for major OEM. ISO 9001 and CCS certifications achieved. Awarded High Technology Enterprise.
2022+
European aftermarket development accelerates. EU A/C catalog reaches 1,372 SKUs covering 85+ vehicle brands.
2025
Group facility exceeds 105,500 m² across five locations. In process of establishing support locations globally. Continued expansion across European and North American markets.
Contact

Let's Talk

Whether you are evaluating a new supplier, looking for a specific part, or exploring a larger partnership — we respond within one business day.

Send an Enquiry

We respond within one business day

Contact Details

📧
Emailsales@dptwx.com
🌐
Websitewww.dptwx.com
📍
HeadquartersWuxi, Jiangsu Province, China

What to include

✓ OE part number or vehicle make/model/year
✓ Refrigerant type (R134a or R1234yf) for A/C
✓ Annual volume or project scale
✓ Competitor reference for cross-matching
✓ Technical or regulatory requirements

Available on request

📋 Type test reports (A/C hoses)
📋 OQC batch inspection reports
📋 Certificate copies — all facilities
📋 TecDoc-compatible catalog data
📋 SAE J2064 performance comparison
📋 CCV validation test data