Cylinder manifolds


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

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

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

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

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

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

  • Single Cylinder Manifold 
  • Single Cylinder Manifold with 1 Standby
  • Two Cylinder Manifold
  • Two Cylinder Manifold with 1 Standby
  • Three Cylinder Manifold
  • Three Cylinder Manifold with 1 Standby
  • Four Cylinder Manifold
  • Four Cylinder Manifold with 2 Standbys

 All manifolds should consist of the following equipment:

  • DOT rated cylinders for ammonia use
  • Ammonia flexible hose
  • Schedule 80 black iron pipe
  • Ammonia rated safety relief valves
  • Forged steel unions
  • Flow controls
  • A vent line leading to atmosphere
  • Steel ammonia service valves
  • Connector-Yoke type cylinder valves
  • Forged steel fittings