Internal valves for enhanced LPG/NH3 tank safety

Internal valves are installed in LPG tanks as a safety measure to prevent spillage if piping is damaged or tanks are tipped over. They are commonly installed in conjunction with compressors and/or pumps in stationary storage tanks, bobtail delivery truck loading and unloading lines or in-line installations.

Product description

The excess flow functionality of the internal valve shuts off flow automatically if there are large changes in pressure. The ball valve feature allows for manual shut-off by a lever whereas remote control is possible using other actuators. The internal installation increases safety dramatically by avoiding the shearing of the valve in terms of mechanical impact.

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Body: Ductile iron, cast steel
Operating lever: Cadmium plated steel
Stems: Stainless steel
Spring: Stainless steel
Seats: Resilient synthetic rubber
Shaft bearing: Nylon
Piston: Aluminium
Screen: Stainless steel
Cylinder: Stainless steel

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Gas types: LPG (Propane, Butane), NH3 (Ammonia, Anhydrous Ammonia)
Connections: Thread, flange
Pressure range: 51 bar (739.6 psi)
Flow rate (closing):
LPG: 189 to 2271 lpm (50 to 600 gpm)
NH3: 170 to 2044 lpm (45 to 540 gpm)
Temperature range: -40˚C to +165˚C (-40˚F to +329˚F)
Sizes and range: 1/1/4" to 4" 
Series: A3209D, A3209DT, A3211D, A3217A, A3217DA, A3219, A3212 and A3213D Series
Standards: UL listed, CE-PED, CE-TPED

*Materials and specifications are subject to generalisation. Our experienced people are ready to help you find the correct fit for your application. 

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  • Can be installed in full and half coupling
  • Built-in excess flow valve and ball valve
  • Maximum flow provider
  • Gas tight seal
  • Easy and quick installation
  • Spring-loaded or automatic types available

Did you know?

Internal valves have many accessories. Let us help you define the most suitable kit for your application

The valves can be actuated manually, pneumatically or electrically

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Whether you already know what you need, or you would like the opinion of an expert, we are always ready to help you out.