High-Performance DOT Series Push-in Fittings for Automotive Applications

• Customized: Customized
• Number of Cylinders: 10/8/6/3
• Type: Brass
• Model NO.: ATC-DOT
• Usage: Air transport Screwdriver, Impact Wrench, Air Drill, Grinding Machinery, Air Compressor, Air Line
• Brand: Isaiah
• Work Temperature: Normal Temperature
• Material: Brass
• Fluid: Air
• Operating Pressure: 0~1.7MPa
• Operating Temperature: -40 ~ 90°C
• Certificate: ISO 9001, ISO14001, ISO45001, RoHS, Reach
• Applicable Tube: SAE J844 Type a&B Nylon Tubing
• Transport Package: Inner Box, Outer Carton, Pallet
• Specification: NPT 01 TO 06
• Trademark: ISAIAH
• Origin: China
• HS Code: 74122090
• Production Capacity: 60000000 Pieces/Year

Product Description

FEATURES:

Specially designed for DOT applications such as trailers and trucks,mainly used for vehicle air brake systems.
One-touch design makes installation and disassembly very convenient.
The embedded support sleeve can ensure the reliability and stability of the connecting tube under drastic temperature changes.
The threaded surface is coated with specialized sealant to ensure effective sealing during thread connection.

Certification	ISO 9001,ISO14001,ISO45001,RoHS,REACH ,CE
Fluid	Air
Operating Pressure	0-1.7Mpa
Operating Temperature	-40-90℃
Applicable Tube	SAE J844 type A&B nylon tubing

Company Profile

FACTORY

Ningbo Intell Pneumatic Technology Co., Ltd. (ISAIAH)
Your Precision Fluid Fittings Partner

Manufacturing Power :
With 25 years of expertise, we operate a 15,000 square meters state-of-the-art facility in Ningbo, China.
As a National Standard Setter, we are the source factory trusted by global industry leaders.

Production Capacity :
Equipped with 200+ precision automated processing machines
and 65+ automated assembly lines
our annual output exceeds 50 million units
ensuring stable supply and fast lead times (7-30 days).

Quality Assurance :
100% leak testing via advanced pressure-drop sensors and CCD vision inspection.
Certified by ISO 9001,ISO 14001,ISO 45001,CE, RoHS
we guarantee "Zero-Leakage" reliability.

Main Categories :
Specializing in high-precision Stainless Steel (304/316L) fittings
Chemical-resistant connectors, FDA-grade components
and full-spectrum pneumatic valves/cylinders.

Strategic Pillar	Core Advantage & Key Highlights	Procurement Value
Manufacturing Authority	•25 Years of deep industrial expertise. •National Standard Setter for the pneumatic industry. •15,000 square meters state-of-the-art production base in Ningbo.	High technical authority and proven long-term reliability for OEM/MRO projects.
Production Scale & Efficiency	•200+ precision automated processing machines. •65+fully automated assembly lines. •50 Million Units annual output. • Fast delivery in 7-30 days.	Ensures massive volume supply stability and ultra-rapid project turnaround times.
"Zero-Leakage" Protocol	•100% Leak Testing using advanced pressure-drop sensors. •CCD Vision Inspection for every unit. • Certified by ISO 9001/14001/45001, CE, RoHS.	Guaranteed product integrity in mission-critical and hazardous environments.
Specialized Product Portfolio	• High-precision 304/316L Stainless Steel fittings. •Chemical-resistant connectors. •FDA-grade components. • Full-spectrum valves and cylinders.	One-stop sourcing for high-barrier industries (Medical, Food, Semiconductor, Oil & Gas).

Product classification

High-Precision Fittings
·Stainless Steel 304/316L
·Nickel-plated Brass
·Push-in Type
·Double Ferrule
 
 
 
Functional Flow Control
·Speed Control Valves
·Stop Fittings
·Check Valves
·Hand Valves
·Ball Valves
 

Industry-Specific Series
·Cleanroom (Semiconductor)
·Chemical-resistant
·Flame Retardant
·FDA-grade
 
 

Pneumatic Auxiliaries
·Silencers/Mufflers
·Solenoid Valves
·Vacuum Generators
·Air Cylinders
 
 
 
Tubes & Air Treatment unit
·PU/Nylon/Flame
·Retardant Tubes
·Air Treatment unit

Production process

Step 1: Size and model confirmation

Our technical team provides 1-on-1 drawing reviews and sample verification to ensure 100% model and functional compatibility.

Step 4: Testing and Debugging

Each fitting undergoesrigorous pressure-dropleak testing and cCD visioninspection.
We only ship"Zero-Leakage" products.

Step 2: Raw Material Procurement

The annual procurement of tens of thousands of tons of raw materials allows us to take the initiative in negotiations with suppliers and strive for highly competitive prices.

Step 5: Packaging and Logistics

We arrange for producttransportation and logisticsto ensure on-time deliveryto customers.

Step 3: Processing and Manufacturing

Powered by 200+ advanced CNC machines
we guarantee +0.5mm extreme tolerance and consistent industrial-grade quality.

Step 6: After-Sales Service

Once customers provide feedback on product quality issues, we will immediately initiate a quality traceability program to identify the cause of the problem. If it is indeed a product quality issue, we will provide customers with unconditional return and exchange services.

Product application

Product customization

We have multiple skilled technicians with over 15 years ofmanufacturing experience
and each processing step isstrictly inspected by dedicated quality inspectors.

Quality Control

Our company constantly increases and updates theproduction equipment, improves the production process,and uses advanced and reasonable testing equipment in theindustry.

Our product quality has been strongly guaranteed.

In addition to the perfect after-sales service,the brand of ISAIAH has been recognized in the industry.

Exhibition

Q1: Are you a trading company or a source manufacturer?
A: We are a leading source manufacturer with 25 years of expertise in pneumatic components. Our 15,000square meters facility in Ningbo is equipped with 200+ precision CNC machines and 65+ automated assembly lines, delivering an annual capacity of over 50 million units.

Q2:How to order the product I need?
A: Make an inquiry - customize drawings and samples - use scenario notification - receive our product design proposals - negotiate details - confirm samples - sign contract and pay deposit - mass production - get the goods ready - deliver - further cooperation.

Q3: How do you guarantee the fittings won't leak under high pressure?
A: We enforce a strict "Zero-Leakage" standard. Every ISAIAH fitting undergoes 100% pressure-drop leak testing and CCD vision inspection before shipping. By maintaining an extreme +/-0.5mm machining tolerance and using premium seals (e.g.,NBR), we ensure industrial-grade reliability.

Q4: How can I easily identify the correct thread types (NPT,BSPT, Metric) during installation? 
A: To eliminate thread confusion - a common industry pain point - we utilize Laser-Etched Coding. The exact specification (e.g., 1/4 NPT) is permanently laser-marked on the fitting body, ensuring quick identification and preventing equipment damage from mismatched threads.

Q5: Do you offer fittings suitable for special environments like food processing or cleanrooms? 
A: Yes. In addition to standard brass and PBT fittings, we specialize in high-precision 316L Stainless Steel fittings (FDA compliant for food & medical), PFA cleanroom connectors for semiconductors, and chemical-resistant valves.

Q6: Do you support OEM/ODM and custom private labeling?
A: Absolutely. As a National Standard Setter in the pneumatic industry, our R&D team can customize solutions based on your drawings. We also offer private labeling, laser-engraved logos, and bulk industrial packaging to help build your brand.

Q7: What is your Minimum Order Quantity (MOQ)? Can I get samples first? 
A: We support a highly flexible supply chain. Standard stock items have a low MOQ (50 pcs) for Ready-To-Ship (RTS) orders. Free samples are available for quality evaluation; you only need to cover the global express freight.

Q8: What is your standard lead time for global delivery? 
A: Thanks to our massive vertical warehousing and automated production, standard orders are typically dispatched within 7-15 days. For large-scale customized OEM orders, the lead time is usually negotiated between 30-60 days.

Q9: What kind of after-sales support do you provide? 
A: We treat our clients as long-term partners. 
We provide 24/7 rapid response support, lifetime technical guidance for pneumatic system integration, and a solid replacement policy for any verified manufacturing defects.

Q10:How to make the payment?
A: We accept T/T