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DOUBLE WINDOW SIGHT GLASS
Double Window Sight Glass (Class 150)
Standard Housing Materials:
Pipe: 1" to 8" (Sch. 40), 10" to 12" (Sch. 30)
CS ASTM A106 Grade B
Gasket:As per ASTM D4894
Glass: Toughened Borosilicate for High Temp
Stud:As per SS304
Standard Liner Materials:
PFA as per ASTM D 3307
Lining and testing as per ASTM F1545-15aExterior Finish:
Standard: Two Layers of epoxy corrosion resistant primer
Special paint or blast profile can be applied for an
additional charge.
Size (inch) Ordering
CodesØA
(mm)ØB
(mm)H
(mm)P
(mm)S
(mm)Stack Bolt
Holes
(inch)Run Bolt
Holes
(inch)Lining
MaterialHousing
MaterialVacuum
Rating (in
Hg/˚C)1" LPS-1044-1 20.0 50.8 89 30 3.3 1/2*-BSW 15.9 PTFE DI Casted FV/200 1.5" LPS-1044-1.5 33.3 73 102 37 3.8 1/2*-BSW 15.9 2" LPS-1044-2 44.4 92 114 43 4.1 5/8*-BSW 19.0 3" LPS-1044-3 69.8 127 140 56 4.1 5/8*-BSW 19.0 4" LSP-1044-4 94.2 157 165 67 4.1 5/8*-BSW 19.0 6" LPS-1044-6 140.1 216 203 105 7.1 3/4**-BSW 22.2 ** 4 holes closest to centerline are tapped, other bolt holes are bored smooth
* All bolts are tapped.For details on sizes 8" and above please contact DuFlon
5242 Rev 00 dt 12th Aug 2018
BACK TOLPS ANSI STANDARDS 
