with Conical Thread, Brass, up to 100 °C

GN 743.7 Oil Sight Glasses

Type

A	With reflector
B	Without reflector

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d₁	d₂ External thread conical	a Datum plane	d₃ at a	d₄ Internal thread cylindrical	conical	e	l₁	l₂	l₃ Usable thread length	p Thread pitch	s

11	R 3/8	6,4	16,7	Rp 3/8	-	22	13	6	10,1	1,34	19
11	3/8 NPT	6,1	17,1	-	3/8 NPT	22	15	6	-	1,41	19,1
14	R 1/2	8,2	21	Rp 1/2	-	27,5	17	7	13,2	1,81	24
14	1/2 NPT	8,1	21,2	-	1/2 NPT	27,5	16	7	-	1,81	23,8
18	R 3/4	9,5	26,4	Rp 3/4	-	31	18	8	14,5	1,81	27
18	3/4 NPT	8,6	26,6	-	3/4 NPT	33	18	8	-	1,81	28,6
24	R 1	10,4	33,2	Rp 1	-	40,5	21	9	16,8	2,30	36
24	1 NPT	10,2	33,7	-	1 NPT	41,5	22	8	-	2,21	34,9
32	R 1 1/4	12,7	42	Rp 1 1/4	-	53	24	9	19,1	2,30	46
32	1 1/4 NPT	10,7	42,2	-	1 1/4 NPT	51,5	23	9	-	2,21	44,5

Filter combination produces no result.

Specification

Body
Brass
CuZn40Pb2

Reflector
Technoploymer (Polysulfon)

Sight glass
Float glass
Temperature resistant up to 100 °C'''

O-ring
Rubber NBR (Perbunan^®)

Elastomer Characteristics

Plastic Characteristics

RoHS

On request

EPDM seals

Information

The conical thread of the oil sight glasses GN 743.7 makes a metallic seal possible. When tightening the conical external thread R it blocks itself with the appropriate cylindrical internal thread Rp.

With the datum plane a the R-external thread has the same thread diameter as the Rp-internal thread, so that it can be screwed in by hand. The strong tightening by means of 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 sight glasses GN 743.7 can also be used on pressurised tanks. Tests regarding maximum pressure are available.

How to order