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Sight Reflex Glass Level Gauge 10mm Scale With Ball Check Valve , Graphite Gaskets

Liaoning Ruiland Science & Technology Co., Ltd.
Liaoning Ruiland Science & Technology Co., Ltd.
City: Dandong
Province/State: Liaoning
Country/Region: China
Tel: 86-415-2812775
Contact Person:
Mr Zhou

Sight Reflex Glass Level Gauge 10mm Scale With Ball Check Valve , Graphite Gaskets

Brand Name : RST
Model Number : ULB-R300
Place of Origin : China
MOQ : 1
Price : negotiation
Payment Terms : T/T, Western Union
Delivery Time : 10-30 work days
Packaging Details : Wooden packaging
Glass plate dimensions : 140×34×17,220×34×17mm
Flange Centre distance L : 500mm,800mm,1100mm,1400mm,1700mm or other requirements
Body : square bar 48×42
Scale : 10mm
Gasket : Graphite gaskets
Valve : Ball-check valve
Ball-check valve working pressure : ≥0.3MPa
Certification : ISO9001
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ULB-R300 Reflection Glass Level Gauge with Ball-check valve working pressure ≥0.3MPa

Product specification



Glass materialBorosilicate
GasketGraphite gaskets
Bodysquare bar 48×42
Visual rangeH=L -240mm
Nominal pressure≤300LB
Heating steam jacket jointsR3/8 or special requirements
Heating steam pressure≤1.0MPa
Operating temperature-20℃~+250℃
Wetted material20 304 or special requirements
Material of coversZG450
Thickness of covers26mm

Double-screw Bolt

Vent and drain outletM12×1.5(MF) or valve


ULB –R300 glass level gauge is strength and versatility make pressure gages ideal for most common process conditions. While these gauges are not specifically designed for steam service, the ULB-R300 gauge will perform at saturated steam pressures up to 300LB.Mica shields are not available use in gauges.

Working principle

The liquid level is distinguished by the different brightness of the reflex glass in the water or in the steam space. in fact, where there is liquid in contact with the glass, the incidental light is refracted to the side of the gauge and absorbed; in the steam space, the incidental light is reflected against the glass grooves and the glass appears very bright.


Continuous level indication without power supply
Direct indication of the level
Individual design and corrosion resistant materials make the products suitable for a broad range of applications
Chemical, petrochemical industry, oil and natural gas extraction(on-and offshore),shipbuilding, machine building, power generating equipment, power plants
Oil and gas, heat transfer and refrigeration systems, plants for cryogenics


Reflex level gauges can be used in most of application and offer great advantages in terms of

- low initial cost

- low operating cost

- easy level reading

Reflex level gauges cannot be used in certain cases as for example:

- when the separation level between two liquids has to be read(interface);
- when besides the level indication, the observation of the liquid colour is required;
-when the process fluid is high-pressure water steam, since in this case the glass must be protected from the solvent action of the boiler water by using mica shields;


The main body of the sight glass level gauge, contains the liquid channel.
For the clamping of the sight glass plate
Flat gasket
Chambered sealing between the liquid channel and the environment
Sight glass plates per QB2112
Mechanical protection between cover and glass
Bolt, nut
Hold the forces form the internal pressure
Glass size
Standard lengths of sight glass plates per QB2112, width 34 mm, thickness 17 mm
Valve heads
Valve heads isolate the vessel from the sight glass level indicator. They consist of the valve body and the head piece. They are actuated by a valve with quick closing lever or hand-wheel. In general, they are fitted with a ball-check valve as a safety element.
Ball-check valve
The ball-check valve should prevent any major spillage from the sight glass level indicator in the event of any glass or mica breakage or other sizable leakge. For this purpose there is, under the valve seat(pressure>0.5bar).in this way, the flow is sharply reduced. The closing of the valve presses the ball back into its starting position.

Product Tags:

transparent level gauge


sight glass gauge

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