Milton s-764 Milton S-764 1/4" FNPT V Style High Flow Coupler.

1/4" FNPT high flow V style couplers will accept A, M. and V style plugs, however, to retain maximum air flow use V style plugs. Sleeve release is a push type and is easy to use; simply push plug into coupler to engage, pull sleeve back to remove. Perfect for high volume, low pressure applications. V style couplers have a 1/4" basic flow size and a maximum pressure of 300 PSI.