J. W. Winco, Inc. Datasheets for Sight Windows

Sight windows are an effective and economical way of viewing tank, pressure vessel and piping systems interiors. They are also referred to as sight glasses.
Sight Windows: Learn more

Product Name Notes
EN 650.2 between fluid and contrast screen is avoided preventing yellowing to screen; can be removed prior to installation to customize markings. Assembled using ultrasound welding to guarantee a perfect seal. Scale...
EN 650.4 Elesa® original design narrow shape fluid level indicators. These oil level indicators are a low cost alternative to EN 650. The liquid level is legible from all angles. The polyamide...
EN 546
EN 547
Elesa® original design technopolymer plastic dome-shaped fluid level sight glasses. Mainly used as oil circulation indicators. Practically indestructible; even if high torque is applied there is no danger of breakage.
GN 743 Fluid level sight glasses GN 743 offer the following features: 1. Genuine glass of high stability and scratch proof. 2. Sealing with an O-ring on the periphery and not on...
GN 743.1 Fluid level sight glasses GN 743.1 offer the following features: 1. Genuine glass of high stability and scratch proof. 2. Sealing with an O-ring on the periphery and not on...
GN 743.2 Fluid level sight glasses GN 743.2 offer the following features: 1. Genuine natural glass of high stability and scratch proof. 2. Sealing with an O-ring on the periphery and not...
GN 743.3 Fluid level sight glasses GN 743.3 offer the following features: 1. Genuine ESG glass of high stability and scratch proof. 2. Sealing with an O-ring on the periphery and not...
GN 743.5 Fluid level sight glasses GN 743.5 offer the following features: 1. Genuine glass of high stability and scratch proof. 2. Sealing with an O-ring on the periphery and not on...
GN 744 GN 744 fluid level sight glasses with prismatic reflector expand the range and usage of oil level sight glasses. With the cats-eye prism effect on the oil color, oil viscosity...
EN 541 grease and other chemical agents. The particular shape of the lenticular window increases and improves visibility even from side positions. A moderate torque (see table) is recommended when tightening oil...
EN 543.4 grease and other chemical agents. Window consists of a continuous series of prisms which offer a clear oil reading. It is embedded when spraying the housing and is therefore completely...
EN 543.3 grease and other chemical agents. Window consists of a continuous series of prisms which offer a clear oil reading. A moderate torque (see table) is recommended when tightening oil level...
GN 537 No thread is required for installing the GN 537 fluid level sight glasses. The fluid level sight glass is inserted into the bore d2, tolerance H11. By simply tightening the...
EN 650 /
EN 650.3
phosphoric esters. Avoid contact with alcohol and detergents containing alcohol. EN 650.3 version is for use with fluids containing alcohol. /T models of both versions have incorporated thermometer. Maximum continuous...
EN 543.2 see table) is recommended when tightening oil level indicator so as to guarantee optimal tightness without any elastic deformation.
TLT Sight glass: Transparent high resistance polyamide
GN 743.7 The conical thread of GN 743.7 fluid level sight glasses makes a metallic seal possible. When the male thread is tightened, it wedges itself within the appropriate female thread. At...
GN 743.8 The conical thread of GN 743.8 fluid level sight glasses makes a metallic seal possible. When the male thread is tightened, it wedges itself within the appropriate female thread. At...
GN 743.6 The European guidelines for explosion protection introduced on 7/1/03 (ATEX) also cover explosion protection in the mechanical sector. Fluid level sight glasses GN 743.6 are suitable for use in an...