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NH3 Fill/Vapor Valves

NH₃ fill/vapor valves play an important role in maintaining system safety, reliability, and regulatory compliance in ammonia handling. Designed for high-pressure situations, these components are built for durability and precise control, provide safe filling operations, and reliable vapor service where liquid withdrawal valves are not suitable.

At Mid-South Ag, we supply trusted, industry-proven designs and equipment that are suitable for agricultural and industrial ammonia systems.

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  • Rego A8016DP - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME-Mid-South Ag. Equipment
    Up to 1% off
    REGO

    Rego A8016DP - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME

    $316.71 USD
    $316.71 USD $320.97 USD SAVE $4.26
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  • Squibb-Taylor A525P - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME-Mid-South Ag. Equipment
    SQUIBB TAYLOR

    Squibb-Taylor A525P - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME

    $271.51 USD
    $271.51 USD $211.89 USD
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  • Continental NH3 B-1201 (Formerly A-1201) - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME-Mid-South Ag. Equipment
    CONTINENTAL NH3

    Continental NH3 B-1201 (Formerly A-1201) - NH3 Fill/Vapor Valve -1-1/4" MPT X 1-3/4" ACME

    $224.46 USD
    $224.46 USD $206.69 USD
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  • Squibb-Taylor A502N-60 - NH3 Fill/Liquid Withdrawal Valve -1-1/2" MPT X 1-1/2" FPT-Mid-South Ag. Equipment
    SQUIBB TAYLOR

    Squibb-Taylor A502N-60 - NH3 Fill/Liquid Withdrawal Valve -1-1/2" MPT X 1-1/2" FPT

    $627.04 USD
    $627.04 USD $490.09 USD
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  • Continental NH3 Fill/Withdrawal Combo Valve | A-1205
    Up to 38% off
    CONTINENTAL NH3

    Continental NH3 Fill/Withdrawal Combo Valve | A-1205

    $200.00 USD
    $200.00 USD $325.00 USD SAVE $125.00
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A Comprehensive Range of NH₃ Fill/Vapor Valves From Industry Specialists

We stock a focused range of NH₃ fill and vapor valves from established manufacturers such as Continental NH3, Squibb-Taylor, and Rego. These valves are designed specifically for ammonia vapor-phase service and tank filling applications such as nursing tanks and bulk storage. 

NH₃ Fill / Vapor Valves  (Vapor Service and Tank Filling Only)

Combination Fill / Liquid Withdrawal Valves (Liquid NH₃ Service)

These valves are liquid NH₃ withdrawal valves that also allow tank filling. They do not perform vapor-only service and are used where port availability is limited.

Not what you’re looking for? You can view our NH₃ liquid valves here.

Why Choose Our NH₃ Fill and Vapor Valves?

  • Designed for Vapor Service – Built specifically for ammonia vapor and filling applications
  • Controlled Tank Filling – Supports safe and regulated ammonia transfer into tanks
  • Durable Construction – Materials selected for resistance to NH₃ exposure and corrosion
  • Standard Connections – Common MPT and ACME fittings for compatibility
  • System Flexibility – Combination valve options available where filling and withdrawal are required
  • Expert Support – Assistance available to ensure correct valve selection

Purchase Quality NH₃ Fill/Vapor Valves From a Trusted Partner

Selecting the correct valve is critical when working with anhydrous ammonia. At Mid-South Ag, we supply reliable NH₃ fill and vapor valves designed to support safe filling operations and vapor handling in compliant ammonia systems.

Our team understands NH₃ equipment and can help you determine whether a standard fill/vapor valve or a combination fill/withdrawal valve is the right solution for your setup. 

If you need assistance choosing the correct product, contact our team for more information.

Frequently Asked Question

NH₃ fill and vapor valves are used to fill ammonia tanks and to manage vapor-phase ammonia during connection, pressure equalisation, and transfer operations. They support controlled tank filling and safe vapor handling. If your desired application involves transferring liquid ammonia, you may need an NH₃ liquid withdrawal valve.

Fill and vapor valves are generally installed on bulk storage tanks and nurse tanks at designated fill or vapor service ports. This allows safe hose connection and the management of vapor during filling operations. For systems that require distributing ammonia to multiple outlets, NH₃ manifolds & splitters may also be required.

No. Fill and vapor valves are not designed for liquid ammonia withdrawal. Liquid NH₃ transfer requires a dedicated NH₃ liquid withdrawal valve or a combination fill / liquid withdrawal valve that is specifically made for liquid handling.

Yes. NH₃ fill and vapor valves are commonly used on nurse tanks for filling operations and vapor handling. Nurse tank systems also typically include safety relief valves and bleeder valves to maintain safe, compliant operation.

Choosing the correct valve depends on tank connection size, required fittings (such as ACME connections), and whether the valve is intended for vapor service only or filling operations. If you need assistance choosing the correct product for our system, contact our team for more information.

Nurse tank vapor and fill valves are used to fill ammonia tanks and manage ammonia vapor during connection and pressure equalisation. They are designed for vaporr service and tank filling, not for liquid ammonia withdrawal.

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