Gas nail Gun 422J Size Nail Gun

Great Art Dayi 422j / 422jb Code Nail Gun - Product Overview

Product Model & Core Specifications

• Model: 422J (Code Nail Gun) / 422jb (Code Nail Gun)
• Nail Width: 4mm
• Nail Length Range: 10-22mm
• Nail Slot Capacity: 100 pieces
• Net Weight: ~1.09kg (422J) / -1.1kg (422jb)
• Working Pressure (422jb): 4-8bar
• Air Inlet Thread (422jb): 8mm

Key Applications

Ideal for:

• Leather sofas, upholstered beds, swivel chairs, and other fabric-wrapped furniture.
• Nailing wood-based decorative panels (e.g., MDF, plywood trim).

Standard Configuration (Included Accessories)

• 1 × Packing Box
• 1 × Spare Oil (for maintenance)
• 2 × Wrenches (for assembly/adjustment)

Troubleshooting & Safety

To ensure safe, efficient operation, refer to our Fault & Troubleshooting Guide for common issues (e.g., air leaks, "card nail," failure to start) and solutions:

Issue

Troubleshooting Steps

Handle switch leaks air

1. Check switch assembly; replace O-ring if damaged. 2. Clean debris from switch.

Gusset switch leaks air

1. Inspect switch assembly; replace nylon valve seat if damaged. 2. Check balance valve; replace O-ring if damaged.

Cylinder head (lever release) leaks air

1. Check cylinder assembly; remove debris. 2. Replace O-ring if damaged.

Buckle plate cylinder head leaks air

1. Check cylinder head assembly; clean balance valve debris. 2. Replace damaged rectangular sealing rings.

Air leaks from gun handle

Remove cylinder head/assembly; inspect cylinder & external O-rings; replace damaged parts.

Buckle plate gun head leaks air

1. Remove cylinder assembly; inspect buffer pad/piston O-ring; replace if damaged. 2. Replace buffer piston assembly if damaged.

Card Nail

1. Check nails (replace if substandard). 2. Check top head (replace if worn/deformed). 3. Check firing pin (replace piston assembly if worn).

Not Starting

1. If high (0.6-0.8mpa) / low (0.25-0.5mpa) pressure works, replace valve needle/valve seat. 2. Remove cylinder head; add lubricating oil to balance valve surface.

Why Choose Great Art 422j/422jb

• Precision: 4mm nail width + 10-22mm length range for versatile fastening.
• Efficiency: 100-nail capacity reduces reload frequency.
• Durability: Robust construction + included maintenance kit (spare oil, wrenches) for long-term use.
• Safety: Clear troubleshooting guide minimizes downtime.

Perfect for professional upholsterers, carpenters, and DIY enthusiasts seeking reliable, precise nailing for furniture and woodworking projects.

Note: For 422jb, working pressure (4-8bar) and air inlet (8mm) are additional specifications.

What's in the box
1 x Set Of Nail Guns