Flow indicators suitable for LPG and NH3 monitoring

Flow indicators are a very important piece of equipment that allow plant operators to visually observe the liquid LPG and NH3 flow conditions to ensure safe operations in the plant or station.

Product description

Flow indicator installations provide different advantages depending on the placement in the application, and the types vary depending on the monitored products. Placing it on the upstream side of the pump, suction conditions become observable which enables speed adjustments for achieving the ultimate flow rate without cavitation. Moreover, if placed at the piping load rack, just before the loading hose, it allows the operator to stay constantly updated on pump conditions.

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Body: Ductile iron, stainless steel
Stem: Stainless steel
Seat: Stainless steel
Seat disc: Resilient synthetic rubber
Return spring and swing check: Stainless steel
Glass: Polished, ground, tempered and tested up to 172 bar (2,500 psi)

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Gas types: LPG (Propane, Butane), NH3 (Ammonia, Anhydrous Ammonia)
Connections: Flange, thread, weld
Type: NPT, ANSI, DIN, butt, socket
Pressure range: Up to 25 bar (362 psi)
Sizes and ranges: DN 15 to DN 100, ½" to 4"
Series available: A7794, A7796, A7624, A7616, model 6286 and EFG
Standards: UL listed, CE-PED

*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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  • Approved for both horizontal and vertical installation
  • Long lived, trouble-free operation
  • Easy-to-read flow indicator
  • Heavy-duty spring-loaded check design
  • High flow rates with low pressure drop
  • 1/4" F-NPT plugged boss on top of body
  • O-ring glass seal for leak-tight operation
  • Set screws minimise loosening of glass retainer rings

Did you know?

With compressors, it can be more useful to install sight flow indicators as they provide a visual indication of when the transport or tank car is emptied so that the operation can be immediately reversed to recover the vapour

Selecting the correct indicator depends on the desired stress endurance and visibility

The sight flow indicators can be provided with dual-sided glass visuals, integral swing check or bi-directional with paddle and a flap

Heavy duty swing check with flow indicators with back-flow protection are specifically designed for pipeline systems and suitable for LPG and NH

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Get in touch!

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