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GN743.8 Oil Level Sight Glasses Brass ESG Conical Thread metallic seal pressurised tanks

Standard Machine Elements > Oil Level Sight Glasses, Level Indicators & Plugs > Oil Level Sight Glasses
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GN743.8 Oil Level Sight Glass, Conical Thread, Brass & ESG Glass

 

 

Type A - with contrast screen

Type B - without contrast screen

Select Values to Buy:

Tech Spec:

 

GN743.8 Oil Level Sight Glass, Brass ESG Glass, Conical Thread

The conical thread of these oil level sight glasses, GN743.8 makes a metallic seal possible. When tightening, the conical male thread R blocks itself with the appropriate cylindrical female thread Rp.

With the datum plane a the male thread R has the same thread diameter as the Rp female thread, so that it can be screwed in by hand. Stronger tightening using a tool increases the length of engagement and seals the screw connection.

Additionally a sealant (hemp or teflon band) is usually used. The R thread is roughened, so that the sealant does not shift when screwing in.

Oil level sight glasses GN743.8 can also be used on pressurised tanks. Pressure and vacuum pressure test data is available.

Specification

Body - Brass CuZn40Pb2

Contrast screen - Technoploymer (Polysulfon), temperature resistant up to 180 °C

Sight glass - ESG glass

O ring - rubber FPM (Viton®), identification by off black finish of the sealing ring

 RoHS compliant

Pressure Bar Information

Diam. 11 50 bar

Diam. 14 50 bar

Diam. 18 25 bar

Diam. 24 20 bar

Diam. 32 12 bar

Test conditions:

20 - 25 °Celsius

Standard hydraulic oil with viscosity 68

Relative humidity 50%

Slow increase of pressure.

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PartCoded1d2 Male Thread
Conical
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Datum
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d3d4
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Female Thread
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el1l2l3
Usable Thread
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Thread Pitch
MaterialMass
 
GN743.8-11-R3/8-A11R3/8A6.416.7Rp3/8~2213610.1191.34MS0.019
GN743.8-11-R3/8-B11R3/8B6.416.7Rp3/8~2213610.1191.34MS0.022
GN743.8-11-3/8NPT-A113/8NPTA6.117.1~3/8NPT2215619.11.41MS0.027
GN743.8-11-3/8NPT-B113/8NPTB6.117.1~3/8NPT2215619.11.41MS0.02
GN743.8-14-R1/2-A14R1/2A8.221Rp1/2~27.517713.2241.81MS0.1
GN743.8-14-R1/2-B14R1/2B8.221Rp1/2~27.517713.2241.81MS0.04
GN743.8-14-1/2NPT-A141/2NPTA8.121.2~1/2NPT27.516723.81.81MS0.034
GN743.8-14-1/2NPT-B141/2NPTB8.121.2~1/2NPT27.516723.81.81MS0.032
GN743.8-18-R3/4-A18R3/4A9.526.4Rp3/4~3118814.5271.81MS0.049
GN743.8-18-R3/4-B18R3/4B9.526.4Rp3/4~3118814.5271.81MS0.06
GN743.8-18-3/4NPT-A183/4NPTA8.626.6~3/4NPT3318828.61.81MS0.055
GN743.8-18-3/4NPT-B183/4NPTB8.626.6~3/4NPT3318828.61.81MS0.06
GN743.8-24-R1-A24R1A10.433.2Rp1~40.521916.8362.3MS0.092
GN743.8-24-R1-B24R1B10.433.2Rp1~40.521916.8362.3MS0.08
GN743.8-24-1NPT-A241NPTA10.233.7~1NPT41.522834.92.21MS0.1
GN743.8-24-1NPT-B241NPTB10.233.7~1NPT41.522834.92.21MS0.14
GN743.8-32-R11/4-A32R11/4A12.742Rp11/4~5324919.1462.3MS0.14
GN743.8-32-R11/4-B32R11/4B12.742Rp11/4~5324919.1462.3MS0.14
GN743.8-32-11/4NPT-A3211/4NPTA10.742.2~11/4NPT51.523944.52.21MS0.15
GN743.8-32-11/4NPT-B3211/4NPTB10.742.2~11/4NPT51.523944.52.21MS0.14
#4559.209~4562.162#


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