Model RLGL Weld Pad Sight Glass

Name: Model RLGL Weld Pad Sight Glass
Brand: Northeast Controls Inc.

Reflex and Transparent Weld-In Sight Windows — ASME Code Conforming

Model RLGL sight glasses are designed for welding into ASME Code and non-code pressure vessels, piping, or tank walls. They are available in various materials of construction and are suitable for both vacuum and pressure applications. Custom designs are available for higher pressure ratings, special sizes, and cylindrical radiused weld pads.

Model RLGL sight glass materials conform to ASME Boiler & Pressure Vessel Code requirements. Special materials and higher alloys are available upon request.

Operating Conditions

Standard units rated for full vacuum service
Pressures up to 150 PSIG standard
Higher pressure ratings available on request
Temperature rating limited by gasket and/or lens material

Lens Options

Reflex Lens — refractive prisms for improved visibility of liquid level indication
Transparent Lens — observe liquid color, clarity, and level; view interface between two fluids

Specifications

Style:: Weld-In Place
Code Compliance:: ASME Boiler & Pressure Vessel Code
Service:: Vacuum and pressure applications
Standard Max Pressure:: 150 PSIG (higher ratings available)
Lens Types:: Reflex (R) or Transparent (T)
Cover / Weld Pad Materials:: 304L, 316L, Carbon Steel, 317L, 2205 Duplex, AL6XN, Alloy C22, Alloy C276, Alloy 20
Lens Materials:: Tempered Borosilicate, Tempered Soda Lime, Quartz, Polycarbonate, Acrylic
Seal Gasket Materials:: Non-Asbestos, EPDM, Nitrile, Silicone, Expanded PTFE, Viton®, Graphite
Cushion Gasket Materials:: Non-Asbestos, PTFE, Graphite
Studs / Nuts:: Stainless Steel, Alloy Steel, ASME SA Material
Custom:: Special sizes, higher pressure ratings, cylindrical radiused weld pads

Model RLGL — Standard Dimensions

Size	Sections	Glass Size	Visible Length (V)	Overall Length (L)	Bolting
11	1	1	3-3/4"	5-1/4"	(6) x 3/8"
12	1	2	4-3/4"	6-1/4"	(8) x 3/8"
13	1	3	5-3/4"	7-1/4"	(8) x 3/8"
14	1	4	6-3/4"	8-1/4"	(10) x 3/8"
15	1	5	7-7/8"	9-3/8"	(10) x 3/8"
16	1	6	9-1/8"	10-5/8"	(12) x 3/8"
17	1	7	10-1/4"	11-3/4"	(14) x 3/8"
18	1	8	11-7/8"	13-3/8"	(16) x 3/8"
19	1	9	12-5/8"	14-1/8"	(16) x 3/8"
24	2	4	15"	16-1/2"	(20) x 3/8"
25	2	5	17-1/4"	18-3/4"	(20) x 3/8"
26	2	6	19-3/4"	21-1/4"	(24) x 3/8"
27	2	7	22"	23-1/2"	(28) x 3/8"
28	2	8	25-1/4"	26-3/4"	(32) x 3/8"
29	2	9	26-3/4"	28-1/4"	(32) x 3/8"
36	3	6	30-3/8"	31-7/8"	(36) x 3/8"
37	3	7	33-3/4"	35-1/4"	(42) x 3/8"
38	3	8	38-5/8"	40-1/8"	(48) x 3/8"
39	3	9	40-7/8"	42-3/8"	(48) x 3/8"
47	4	7	45-1/2"	47"	(56) x 3/8"
48	4	8	52"	53-1/2"	(64) x 3/8"
49	4	9	55"	56-1/2"	(64) x 3/8"
57	5	7	57-1/4"	58-3/4"	(70) x 3/8"
58	5	8	65-3/8"	66-7/8"	(80) x 3/8"
59	5	9	69-1/8"	70-5/8"	(80) x 3/8"