Graco 127340 Check Valve 1/4" MNPT X FNPT

Graco 127340 Check Valve – 1/4″ MNPT × FNPT

The Graco 127340 Check Valve is a durable one-way fluid valve that prevents backflow and protects your system from reverse pressure. Designed for precision control, it is commonly used in Graco proportioning, dispensing, and plural-component equipment.

Compatible Graco Machines

This check valve is widely used across several Graco sprayer and proportioning systems, including:

• Graco ProMix 2KS Series Proportioners
• Graco Xtreme Mix Proportioners
• Graco Plural-Component Dispensing Systems
• Graco Metering Systems with 1/4″ fluid ports

*Compatibility may vary by configuration; always verify with your machine’s parts manual.

Key Features

• 1/4″ MNPT (male) × 1/4″ FNPT (female) connections
• Prevents reverse fluid flow in proportioning and dispensing systems
• Compact, durable construction for long-term reliability
• OEM Graco part ensures proper fit and function
• Maintains consistent flow and protects system components

Technical Specifications

Why Use This Check Valve?

The Graco 127340 ensures fluid flows in the correct direction, protecting pumps, regulators, and proportioning systems from backflow damage and maintaining system performance and accuracy.

Installation & Maintenance Tips

• Install in the correct orientation according to the flow arrow on the valve.
• Use minimal thread sealant on NPT threads, avoiding the valve seat.
• Inspect periodically for debris or wear to maintain proper function.
• Replace with a genuine Graco check valve if damaged or leaking.

Safety Notes

Always depressurize your system before installing or servicing the check valve. Incorrect installation can cause leaks, reversed flow, or equipment damage.

Frequently Asked Questions