Brand New US Stock 4 Pack Tire Inflator Air Chuck Lock On Open Flow 1/4" NPT

4 Pack Open-Flow Tire Inflator Air Chuck | 1/4" NPT Female Brass Lock-On Tire Inflation Nozzle for Car Truck Motorcycle Bike

 
 

Product Overview

 
This 4-pack premium open-flow tire inflator air chuck set is the essential accessory for fast, hassle-free tire inflation and pressure testing. Made of heavy-duty solid brass with a lock-on clip design, each chuck delivers a secure, leak-free connection to standard Schrader (8V1) tire valves, eliminating the need to hold the chuck in place during inflation.
 
With a universal 1/4 inch NPT female thread, these chucks are fully compatible with most air compressors, tire inflators, pressure gauges, and air hoses. The 4-pack value set is ideal for professional auto repair shops, tire shops, multi-vehicle families, and DIY vehicle owners, with spare chucks for multi-equipment use, backup replacement, and on-the-go emergency tire inflation. Suitable for use on cars, trucks, motorcycles, electric bikes, SUVs, RVs, ATVs, and more.
 
 

✨ Core Key Features

 

1. 4 Pack Value Set for Multi-Scene Use

 
This set includes 4 high-quality brass air chucks, perfectly meeting the needs of professional repair shops for multi-station use, multi-vehicle families for daily inflation, and DIY enthusiasts for backup replacement. It offers exceptional cost-effectiveness, eliminating the need for repeated separate purchases.
 

2. Heavy-Duty Solid Brass Construction

 
Each air chuck body is precision-machined from high-strength solid brass, which offers excellent corrosion resistance, rust-proof performance, and long-term durability. It can withstand repeated use in harsh garage and outdoor environments, with no deformation or air leakage, ensuring reliable performance for years of service.
 

3. Lock-On Hands-Free Open-Flow Design

 
This open-flow air chuck features an innovative press-to-lock lever design. Simply press the lever, fit the chuck onto the tire valve stem, and release the lever to lock it securely in place. No need to hold the chuck manually during inflation, allowing for one-handed operation and greatly improving inflation efficiency and convenience.
 

4. Universal 1/4" NPT Female Thread Connection

 
Each chuck is equipped with a standard 1/4 inch NPT female thread (fits 11.5mm-12mm thread), which is universally compatible with nearly all air hoses, tire inflators, air compressors, digital/analog tire pressure gauges, and other pneumatic inflation equipment. It creates a tight, leak-free seal for consistent air flow.
 

5. Wide Universal Compatibility

 
These tire inflator chucks are designed for use with standard American Schrader (8V1) tire valves, making them compatible with a wide range of vehicles: passenger cars, trucks, motorcycles, electric bikes, scooters, SUVs, RVs, ATVs, trailers, and other vehicles with standard tire valves.
 

6. Compact & Ultra-Portable Design

 
With an ultra-compact size of 4cm × 3.5cm × 2cm and a single unit net weight of only 35g, each air chuck is extremely lightweight and portable. They can be easily stored in your toolbox, glove box, tire repair kit, or even your pocket, making them perfect for on-the-go tire inflation and emergency use.
 
 

📐 Full Technical Specifications

 
ParameterExact Details
Product TypeOpen-Flow Lock-On Tire Inflator Air Chuck (4 Pack)
Core Body MaterialHigh-Strength Solid Brass
Lever MaterialStainless Steel
ColorBrass Gold + Silver
Single Unit Dimensions4cm × 3.5cm × 2cm / 1.57in × 1.38in × 0.79in
Single Unit Net Weight35g
Total Set Gross Weight140g
Thread Specification1/4 Inch NPT Female Thread (Fits 11.5mm-12mm)
Compatible Valve TypeStandard American Schrader (8V1) Tire Valves
Design TypePress-to-Lock Lever, Open-Flow (Normally Open)
Installation TypeThreaded Connection, Lock-On Valve Fit
Compatible EquipmentAir Compressors, Tire Inflators, Tire Pressure Gauges, Air Hoses
PackagingEach chuck is individually packed in a transparent OPP self-sealing bag
 

📦 Package Included

 
  • 4 × Brass Tire Inflator Air Chucks
 
 

🔧 Installation & Quick Usage Guide

 
Each air chuck is easy to install and use, with no special tools required:
 
  1. Install the Chuck: Screw the 1/4" NPT female thread of the air chuck onto the end of your air hose, inflator, or pressure gauge. Tighten it firmly to ensure a leak-free seal.
  2. Lock onto the Tire Valve: Remove the cap from the tire valve stem. Press the silver lever on the chuck to open the locking mechanism, fit the chuck fully onto the valve stem, then release the lever to lock it securely in place.
  3. Inflate the Tire: Turn on your air compressor or inflator to start inflating the tire. The chuck will remain locked on the valve, no manual holding is required. Monitor the tire pressure to reach the manufacturer's recommended level.
  4. Complete the Operation: Once the target tire pressure is reached, turn off the air supply. Press the lever again to release the locking mechanism, remove the chuck from the valve stem, and reinstall the valve cap.
 
 

🛡️ Quality Inspection & Assurance

 
Every unit in the 4-pack set undergoes strict multi-point quality inspection before shipment to ensure full compliance with specifications:
 
  1. Package Inspection: Confirm each chuck is individually packed in a standard transparent OPP self-sealing bag, with 4 complete units in the full set, no damage to the packaging.
  2. Accessory & Item Check: Verify the package contains 4 tire inflator air chucks, with no missing or defective units.
  3. Appearance & Dimension Inspection: Check each unit's dimensions are strictly 4cm × 3.5cm × 2cm, with a single unit net weight of 35g. Inspect the surface for no scratches, stains, burrs, or physical damage, and confirm the press-type lever operates smoothly on every unit.
  4. Structure & Material Inspection: Verify each product body is made of high-quality solid brass, with a stainless steel lever, uniform brass gold and silver color, and a solid, durable structure with no loose parts.
  5. Full Function Test: Test every chuck with a standard 1/4" NPT thread and American Schrader (8V1) tire valve to confirm the locking mechanism works properly, the clip securely locks onto the valve during inflation, and there is no air leakage.
  6. Compatibility Confirmation: Double-check that each unit is compatible with cars, trucks, motorcycles, electric bikes, and other vehicles with standard Schrader tire valves.
  7. Critical Function Note: This tire inflator air chuck does not come with a pre-installed pneumatic disconnection device. Its core function is to connect the air source to the tire valve, with air flow controlled manually via the lever. For pneumatic disconnection function, an additional pneumatic control module or automatic disconnection valve must be installed separately, depending on your equipment design.
  8. Random Sampling Inspection: 10% of the batch is randomly sampled for re-inspection to ensure consistent quality and performance across all units.
 
 

⚠️ Important Usage & Safety Notes

 
  1. Valve Compatibility: These air chucks are designed exclusively for standard American Schrader (8V1) tire valves. They are not compatible with other valve types. Please confirm your tire valve type before purchase.
  2. Thread Seal: For a better leak-free seal, we recommend using thread seal tape on the 1/4" NPT thread when installing the chuck to your air hose or equipment.
  3. Tire Pressure Safety: Always inflate tires to the vehicle manufacturer's recommended tire pressure. Do not over-inflate tires, as this may cause tire damage or blowout, leading to safety hazards.
  4. Pneumatic Disconnection Note: This is a normally open (open-flow) air chuck, it does not include a built-in pneumatic disconnection device. If you require automatic air shut-off functionality, you will need to install an additional compatible pneumatic control valve or module.
  5. Maintenance Tip: Regularly clean the internal valve seat of each chuck to remove dirt and debris, to ensure a tight seal and prevent air leakage during use.
  6. Usage Caution: Do not apply excessive force to the lever during installation or removal, to avoid bending or damaging the locking mechanism.
 
 

After-Sales Service

 
We are committed to providing high-quality automotive tools and professional customer service. All 4 units in the set undergo strict quality inspection before shipment. If you have any questions about compatibility, installation, or product quality, please feel free to contact us at any time. Our dedicated customer service team will respond to you promptly and provide a satisfactory solution.
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1.  We ship the same business day if paid by 4pm EST(1pm PDT).
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