J. W. Winco, Inc.
New Berlin, WI 53151
Apr 04, 2008 Offered in variety of sizes with NPT threads from 3/8 to 1¼ in., inch size Brass Oil Level Sight Glasses have body made of brass, natural glass sight window, and optional reflector of heat resistant technopolymer plastic (Polysulfon). Scratch proof glasses are sealed with o-ring on periphery and not on face edge, so leak tightness is not affected by axial pressures.

J. W. Winco, Inc.
New Berlin, WI 53151
Feb 08, 2008 Designed for light-duty applications, Plastic Oil Level Sight Glasses are made of transparent, high-resistance polyamide with British Standard Pipe Parallel (BSPP) Thread. Each comes with unassembled, oil-resistant synthetic rubber gasket, and nylon plastic has max heat resistance of 194°F.

Papailias, J. G., Co., Inc.
Northvale, NJ 07647
Aug 16, 2007 Available with standard nominal viewing diameters of 5, 6, 7, and 9 in., Series SLEX-100/NW and REX-100/NW provide illuminating and viewing through single port. Offering glare-free illumination, lighting units are explosion-proof UL-844 and C-UL/CSA C22.2 No. 137 listed. Series NW Circular Sightglasses are manufactured from ASME Section VIII acceptable metals, and have pressure ratings of 150 psig pressure and full vacuum at 300°F.

Scientific Marketing Services
Landisville, NJ 08326
Jul 27, 2007 Available with full ANSI pressure Class 150 rating, Series FIF optimizes on-the-spot viewing of pipeline contents. Solution features flanged ends per ANSI B16.5/B16.24 and may be configured with flapper, drip tube, or rotary flow indicators. Standard materials of construction include bronze carbon steel or 316 stainless steel; borosilicate glass lens material; and carbon steel or ductile iron lens retainers. Options include DIN flange connections and double window assemblies.

Papailias, J. G., Co., Inc.
Northvale, NJ 07647
Jul 12, 2007 Manufactured from ASME Section VIII-acceptable metals, Series NW Weld Pad Connection Circular Sightglasses are offered with nominal viewing diameters of 3, 4, 5, 6, 7, and 9 in. as standard for on-the-spot visual inspection of pipeline's contents. Lower flanges, constructed of carbon steel and stainless steel, can be supplied thicker if required to reinforce vessel opening. Products have standard ratings of 150 psig pressure and full vacuum at 300ºF.

Papailias, J. G., Co., Inc.
Northvale, NJ 07647
Jun 17, 2005 Provided with flanged ends per ANSI B16.5 and B16.24, Series FIF is rated at 150 psig and may be configured with flapper, drip tube, or rotary flow indicators. Units are available in ½â€“20 in. sizes with bronze, carbon steel, or 316 steel body; carbon steel or ductile iron lens retainer; carbon steel fasteners; neoprene or Teflon® gaskets; and borosilicate glass lenses. Options include DIN flange connections and double window assemblies.

J. W. Winco, Inc.
New Berlin, WI 53151
May 26, 2005 Oil Level Sight Glass is made of aluminum with NBR synthetic rubber seal, natural glass sight glass, and heat-resistant, technopolymer plastic reflector. Scratchproof sight glass offers leak-tight seal that is not affected by axial pressure. Seal resists heat to 212°F, and sight glasses are available in metric pipe and BSPP parallel threads. ESG Glass Oil Level Sight Glasses use ESG glass and Viton rubber seal for heat resistance to 356°F.

L.J. Star, Inc.
Twinsburg, OH 44087
Feb 25, 2005 Sterile Full View Flow Indicators provide operators with 360° view of process fluid. Installed in new systems or as retrofit component, units are designed for pressures up to 150 psig and come in 11 sizes with standard hygienic clamp connections or optional orbital weld connections. Providing internal transition between electropolished stainless steel heads, O-rings, and precision bore glass window, units can be cleaned-in-place, sterilized-in-place, and autoclaved.

Bradford Div. , DVCC
Brookfield, WI 53005
Dec 13, 2004 Sanitary Sight Glasses meet process requirements of food, dairy, pharmaceutical, and beverage plants. End-cap style sight glasses are available in Lexan® or acrylic material for use with any style of sanitary clamp. In-line sight glasses adapt to bevel seat, buttweld, I-line, John Perry, or Q-line type ends. These glasses use Pyrex® glass with white buna gaskets, resisting bacterial growth. Models are offered in tube OD sizes ranging from 1–6 in.

Dwyer Instruments, Inc.
Michigan City, IN 46361 0373
Jul 02, 2004 Rotor-style Series SFI-801 has clear polycarbonate body, which enables 360° viewing of red PBT rotor. It features pressure rating of 125 psi and temperature rating of 130°F. Optional A-711 output sensor has Vdc output with pulsing for flow totalization and proportional frequency change for flow rate. Indicator is made of all UV-stabilized materials for outdoor service. Output choices include 5 Vdc or dc voltage equal to input power supplied.

KSR Kuebler Of America, Inc.
Raleigh, NC 27613
Apr 21, 2003 Model TM Magnetic Sight Glass level indicators are top-mounted on underground tanks and other tanks with top entry. Standard unit fits tanks with depths of 1–10 ft. Built from 316L or 1.4571 stainless steel, unit chambers handle temperatures from -22 to +840°F and operate with continuous outputs from 4–20 mA. Roller type magnetic indicator provides consistent performance in extreme conditions. Display indicators detect incremental changes in process fluid levels.

Sermatech Technical Services
Limerick, PA 19468
Oct 17, 2002 Double-Sureâ„¢ dual containment sight flow indicator has 150 psig pressure rating and operating temperature range from -20 to +350°F. The inner chamber is subject to 225 psig hydrostatic pressure test and 150 psig helium bubble test, while outer chamber is subject to latter. Indicator includes Lexan® impact shield with unobstructed 360° view and Teflon® and borosilicate glass-wetted surfaces. Indicators are available in 1, 1½, and 2 in. dia in lengths up to 30 in.

L.J. Star, Inc.
Twinsburg, OH 44087
Sep 20, 2002 Obround Weld Pad Gages consist of weld pad, glass window, gaskets, cover flange, and bolting. Standard materials of construction include 316L stainless steel and carbon steel, with gasket materials of EPDM and Viton®. Glass window is tempered borosilicate glass, which is resistant to chemical attack, and thermal and mechanical shock. Models provide visible glass sizes ranging from 1 in. wide x 6 in. long to 4 in. wide x 24 in. long. They are designed for working pressure of 150 psi at 500°F.

Papailias, J. G., Co., Inc.
Northvale, NJ 07647
Jul 02, 2002 LIF Series is designed for visually observing flow of media. Available in pipe sizes from 1/2 to 6 in., indicators offer flanged ends faced and drilled to mate with ANSI Class 150 connections. LIS Series is furnished with NPTF threaded ends. LIG Series is available with flanged ends drilled to mate with ANSI Class 150 connections. Materials of construction include carbon or stainless steel, annealed borosilicate glass cylinders, and neoprene seals.

L.J. Star, Inc.
Twinsburg, OH 44087
Jun 11, 2002 MetaClamp® type Metaglas® sight glass features CIP and SIP cleanability, unlimited reusability, and minimal maintenance. Metaglas window consists of mechanically prestressed borosilicate glass fused within stainless steel ring, which maintains pressure integrity to more than 50 times rated pressure. Immune to thermal and mechanical shock, standard ratings of units in MetaClamp line range up to 150 psig at 536°F.