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Contact Person : Mr. Wang Junming
Company Name : Dezhou Mingzhu Industry & Trade Co., Ltd.
Tel : 0086-318-7906186,7080091,7080092,7080095,
Fax : 0086-318-7080093,7080091
Address : Hebei,Hengshui,1-1506 Fuyuan Building,Quanyechang
Country/Region : China
Zip : 053000

borosilicate gauge glass

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Product Detailed

Related Categories:Boiler Parts

Detailed Product Description

Level gauge borosilicate gauge glass (Sight Glass = reflex glass = Level Gauge glass = Reflex 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
The category is as follows:
1) Three tendons (four grooves)
2) Two tendons (three grooves)
3) Plan transparent

Working temperature:260ºC; working pressure: 4.4-8Mpa

Size Available of level gauge glass:

(Type of level gauge glass: plain/transparent,reflex)

40 x 34(30) x 17mm, 320x 34(30) x 17mm

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

218x 34(30) x 17mm, 190x 34(30) x 17mm

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

115x 34(30) x 17mm.

Round glass

Can be with gasket together.

Packing of level gauge glass: each piece in a box and then in carton.

The materialBorosilicate 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