Milton Industries S1091-1 Tank Check Valve 1/2" NPT with Side Port

The Milton Industries S1091-1 is a heavy-duty tank check valve designed to prevent air volume and pressure from escaping back into compressor heads during non-operation. This essential air compressor component features a 1/2" male national pipe thread (MNPT) connection and includes a convenient 1/8" female national pipe thread (FNPT) side port for pressure switch applications.

Key Specifications:

• 1/2" male national pipe thread (MNPT) primary connection
• 1/8" female national pipe thread (FNPT) side port for pressure switch
• Maximum working pressure: 450 PSI
• Maximum air flow: 20 SCFM
• Maximum operating temperature: 400°F
• Durable brass construction for long-lasting performance

This check valve is an ideal replacement part for maintaining proper air compressor operation, ensuring your compressed air system maintains pressure efficiently and prevents backflow that could damage compressor components. The integrated side port eliminates the need for additional fittings when installing a pressure switch.