Pneumatic Drain Cock Valves

Pneumatic drain cock valves in external seat style with male NPT connections. Available sizes include 1/8 inch, 1/4 inch, and 3/8 inch. The lineup on this page features Midland Industries models, and each SKU shows the current price and in-stock status. Browse related components in Pneumatic Valves & Accessories

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4 Items

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  1. Pneumatic External Seat Drain Cocks
    Pneumatic External Seat Drain Cocks

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  2. Pneumatic External Seat Drain Cock, 1/4 Inch Male NPT
    Pneumatic External Seat Drain Cock, 1/4 Inch Male NPT

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  3. Pneumatic External Seat Drain Cock, 1/8 Inch Male NPT
    Pneumatic External Seat Drain Cock, 1/8 Inch Male NPT

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

  4. Pneumatic External Seat Drain Cock, 3/8 Inch Male NPT
    Pneumatic External Seat Drain Cock, 3/8 Inch Male NPT

    Product is currently not available online.
    Please call 800-507-9651 for assistance.

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Drain Cock Valve Selection & Support

Confirm the male NPT size required by your port and verify the external seat style specified for your application. 

If you need help with product selection or ordering, Contact Us. For a wider view of air system products, see Pneumatic Power & Control.

Industries & Resources 

These valves are used to release air or fluid from lines or vessels in compressed air systems. Common applications include:

  • Manufacturing: draining and venting during setup, maintenance, and changeovers.

  • Construction: jobsite compressor and hose runs that need periodic depressurizing.

  • Industrial/Packaging: purging sections of pneumatic equipment to support safe service.

Explore additional sectors on Industries We Serve.

Pneumatic Drain Cock Valve FAQs

What Is a Drain Cock Valve?

A drain cock valve is a small valve used to release air or fluid from a line or vessel. The items on this page are pneumatic external seat drain cocks with male NPT connections.

What Sizes Are Available?

Available sizes are 1/8 inch, 1/4 inch, and 3/8 inch male NPT.

What Connection Type Do These Use?

All models on this page use male NPT connections.

Which Brand Is Offered Here?

These products are from Midland Industries.

How Do I Choose the Right Valve?

Match the male NPT size to your port and confirm the external seat style required by your application. For help with selection or service, visit Repair Services.