Product Details

waterproof borosilicate rain gauge glass

Product Description

waterproof borosilicate rain gauge glass

Its made from Borosilicate, it is used in lever gauge in boiler for water position.
It is also named: Reflex Gauge Glass, Sight glass, Reflex Glasses
Reflex sight glass, Spares For level Gauge

1.Gauge glass mostly divide into these series:

Clear gauge glass

Reflext gauge glass

1) Three tendons (four grooves)
2) Two tendons (three grooves)

2.It is also named:

Reflex Gauge Glass, Sight glass, Reflex Glasses

Reflex sight glass, Spares For level Gauge.

waterproof borosilicate rain gauge glass

Three tendons (four grooves)

Size:340 x 34(30) x 17mm

320 x 34(30) x 17mm,
280 x 34(30) x 17mm
250 x 34(30) x 17mm,

220 x 34(30) x 17mm,
190 x 34(30) x 17mm
165 x 34(30) x 17mm,

140 x 34(30) x 17mm,
115 x 34(30) x 17mm

The other size is optional or according to the requirements of customers.

Working temperature: 260

Working pressure: 4.0MPa

waterproof borosilicate rain gauge glass

Size

340 x 34(30) x 17mm , 320 x 34(30) x 17mm , 280 x 34(30) x 17mm

250 x 34(30) x 17mm , 220 x 34(30) x 17mm , 190 x 34(30) x 17mm

165 x 34(30) x 17mm , 140 x 34(30) x 17mm , 115 x 34(30) x 17mm

Material

Borosilicate glass

Main Composition

SiO2 B2O3 Na2O+K2O Al2O3

81 13 4 2

Chemical Property

Hydrolytic resistance at98° CISO719-HGB 1

Hydrolytic resistance at121° CISO720-HGA 1

Acid resistance ClassI SO1776-First Class

Usage

It is used in lever gauge in boiler for water position.

waterproof borosilicate rain gauge glass

Level Gauge Glass Physical Property
Testing Item	Standard Rules
1. Appearance	1) Air bubble: Diameter≤0.5mm,in the 10mm x 10mm area the quantity must be ≤3. Diameter from 0.5mm to 1.5mm dispersive air bubble,there is less 2 on the sight plane and less 5 on the No-sight plane. Their distance must be 40mm. The air bubble of Diameter from 1.5mm to 2mm ≤3 on the No-sight plane. Their distance must 40mm. On the sight plane, The distance to the side in 7.5mm,the air bubble of the diameter1mm mustnt be more 2. 2) The glass dont allow slag and scrap iron,etc. impurity. 3) Stripe : dont allow have palpable filaceous and pectinate stripe on the sight plane. 4) Cockle: In the side face,dont allow have the cockle of depth 1mm. 5) Crack: dont allow have crack. 6) Scrape: On the sight plane and in the 7.5mm to edge,the scrape of less than 10mm dont allow more 2 strips. 7) The sight plane must be polishing,and sealing side must be rubbing and polishing.
2. Colour and Lustre	It should be no color and transparent,and with its self tine green is allowed.
3. Water-resistance	Cooked in the water for 5 hours,then weigh up ,then titration with 25ml 0~31 ug/g
4. Alkali-resistance	Cooked in the 0.5N NaoH for 3 hours,then Weigh up,weightlessness should be ≤75 mg/dm2
5. Temperature-resistance impacts capability	Put it into electric cooker,keep for 7min under the temperature of 260±1,then,put into the water of 20±1,it should not crack
6. Bend-resistance	≥80 MPa