Mishimoto MMFT-CHKVLV-34 3/4" Performance One-Way Check Valve Universal Fit

Vehicle Fitment

• Universal fit - compatible with most catch can, crankcase vent, or vacuum line systems using 3/4" hose

Features

• Performance one-way check valve for automotive vent line applications
• Durable anodized aluminum housing resists corrosion and wear
• Universal 3/4" inlet/outlet size fits common air/oil lines
• One-way flow direction prevents backflow and unwanted pressure in systems
• Viton™ diaphragm and seals offer superior chemical resistance
• Fully serviceable design - easy to clean and maintain
• Clear flow direction markings for correct installation
• Mishimoto Lifetime Warranty for long-term reliability

Specifications

• Part Number: MMFT-CHKVLV-34
• Application: Universal one-way check valve
• Fitting Size: 3/4" hose barb inlet & outlet
• Material: Anodized aluminum construction
• Seal Type: Viton diaphragm and seals
• Flow Direction: One-way only (marked)
• Max Fluid Pressure: ~100 PSI
• Serviceable: Yes

Included Components

• 1x Performance one-way check valve (3/4")
• Mishimoto Lifetime Warranty documentation

Product Description

The Mishimoto MMFT-CHKVLV-34 Performance One-Way Check Valve is a universal fluid system component designed to regulate airflow in applications like catch can setups, crankcase ventilation systems, and other automotive vent lines that use 3/4" hoses. Its anodized aluminum body provides durability and corrosion resistance, while the built-in Viton™ diaphragm and seals resist chemicals and oil vapors for robust long-term service.

This check valve ensures airflow moves in only one direction, preventing backflow that can undermine performance or build unwanted pressure in your system. With clear flow direction markings and a serviceable design, installation and maintenance are straightforward. Backed by Mishimoto's Lifetime Warranty, this universal one-way valve adds an extra layer of protection and control to your engine's ventilation or catch can setup.