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Home Up Safety Regulatory Affairs Ammonia Library Contents Page Affiliations Information Request RMT Home Page

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NH3 Detectors
NH3 Storage Tanks
Aqua Storage Tanks
Urea Storage Tanks
Controls
Skid Packages
Vapor Recovery
Cylinder Manifolds
Valves & Assemblies
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CYLINDERS & CYLINDER MANIFOLDS

 

Cylinders

 

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The most common cylinder sizes are 100 and 150 pounds; other sizes are available.

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Cylinders should be fitted with a 240 valve and a short bent dip tube positioned so the bend is opposite the valve opening.

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For Vapor Withdrawal:  The cylinder must be positioned vertically or on its side with the valve opening face down.

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For Liquid Withdrawal:  The cylinder must be positioned on its side with the valve opening face up.  

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All ammonia cylinders must be authorized for ammonia use by the Department Of Transportation (DOT).

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Cylinders must be fastened to a support or nestled closely together to prevent them from falling over and becoming hydrostatically charged.

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Special care must be taken not to overfill cylinders because they are not equipped with a safety relief valve.

 

Cylinder Manifolds

 

Allow one - 150 pound cylinder for every 25 SCFH of Ammonia Gas required.

 

Cylinder manifolds can be manufactured in the following styles:

 

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Single Cylinder Manifold 

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Single Cylinder Manifold with 1 Standby

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Two Cylinder Manifold

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Two Cylinder Manifold with 1 Standby

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Three Cylinder Manifold

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Three Cylinder Manifold with 1 Standby

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Four Cylinder Manifold

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Four Cylinder Manifold with 2 Standbys

 

All manifolds should consist of the following equipment:

 

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DOT rated cylinders for ammonia use

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Ammonia flexible hose

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Schedule 80 black iron pipe

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Ammonia rated safety relief valves

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Forged steel unions

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Flow controls

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A vent line leading to atmosphere

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Steel ammonia service valves

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Connector-Yoke type cylinder valves

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Forged steel fittings

 

 

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