Level Control Devices

Reflex Glass Level Gauges

Reflex Glass Level Gauges

A reflex glass level gauge shows the liquid behind a glass whose inner face has prismatic grooves. Light is absorbed where there is liquid, which looks dark, and reflected where there is steam or gas, which looks bright, so the level line is clearly distinguished.

The store range offers PN16 reflex gauges from 310 mm to 2115 mm long and gauges with glass sizes IV to IX. Spare reflex glasses, gaskets and sealing rings are also supplied separately.

PN16pressure class (product range)
310 – 2115 mmgauge length
IV – IXglass sizes
Spareglass and gaskets

Main Applications

  • Steam boilers
  • High-temperature and hot water boilers
  • Feed water and condensate tanks
  • Pressurised process vessels
  • Oil and fuel service tanks

Technical Data

Operating principleLight reflection in prismatic glass (liquid dark, steam bright)
Pressure classPN16 (product range)
Gauge lengths310, 340, 370, 400, 440, 500, 515, 575, 635, 775, 900, 990, 1110, 1285, 1445, 1580, 1780, 2115 mm (product range)
Glass sizesIV, V, VI, VII, VIII, IX (product range)
Spare partsReflex glass, gasket, sealing ring, adapter ring
ConnectionWith gauge cocks (valves), by model
TemperatureBy model
Body materialBy model

Material Options

PartReflex gauge
Gauge bodyBy model
GlassPrismatic reflex glass
GasketsBy model (available as spares)
CocksBy model

Which material? Reflex glass shows the interface between liquid and steam, so even colourless liquid levels read clearly. Remember that glass can be attacked by acidic or alkaline liquids and high-pH boiler water; include glass and gaskets in the maintenance plan.

Advantages

Clear Reading

  • Liquid dark, steam bright

Wide Length Range

  • From 310 mm to 2115 mm

Spare Parts

  • Glass and gaskets supplied separately

Boiler Suited

  • PN16 class

Construction and Design Features

  • Body carrying the gauge
  • Prismatic reflex glass and gaskets
  • Bolted cover
  • Upper and lower cocks connected to the boiler

Write the centre-to-centre distance and glass size; we will confirm the reflex gauge with spare glass and gaskets.

How to Choose?

  1. Measure the lengthMeasure between the upper and lower cock centres on the boiler.
  2. Identify the glass sizeCheck the glass number of the existing gauge.
  3. Confirm the pressureMake sure boiler pressure is within PN16.
  4. Add sparesPlan spare glass and gaskets for maintenance.

Complementary Products

Why ORFA?

Since 1985Over 40 years of experience in supplying industrial piping equipment.
Technical ConsultancyReflex gauge length and glass selection for your boiler.
Delivery from Stock310–2115 mm gauges, glasses and gaskets shipped from stock.
Spare PartsWe match spare glass and gaskets to your existing gauge size.
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