Zight Glass

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United Glass LLC

image for market steam Boilers on Zightglass

Zight for Boilers

Why consider Zight for your gauge glass?

Because we manufacture here instead of overseas, you’re not eating the cost to have German glass freighted across the Atlantic and storage in the US. As a result, we’ve got the quality level gauges you expect… but for quite a bit less than you might imagine.

What kind of product availability and order turnaround can I expect from Zight?

Often times, your customers need their sight glass ASAP. We manufacture and stock all the most commonly used glasses and lengths so there’s no worry on your end whether the tubes you need are available. And again, you can rest assured that the turnaround out of our facility in Kansas is usually within the same day of the order.

700 Smith St #61070 Houston Tx.

United Glass LLC

RED LINE AND TRANSPARENT GLASS TUBE

Manufactured in 3.3 Borosilicate Glass, these level gauge glass tubes are used in several applications where a good chemical resistance and low thermal expansion coefficient are required. Zight Tubes are available in different wall thicknesses according to customer specifications, and both in Red Line and Transparent . The Red Line tube is treated with a special Paint (two White lines and one red line) which creates an optical effect that magnifies the level of the fluid, and allows a distant and quick inspection.

Custom tubes? No problem!
We manufacture our tubes using Borosilicate 3.3 Industrial Grade glass at lengths up to 145” down to ½”. We can also accommodate a variety of OD and wall thickness requests; from ¼” to 12” OD and from 1/16” to ⅜” thickness. We can make whatever tube you need for the project at hand

Better Safety Factor
While we offer the same pressure ratings, our glass has a larger safety factor due to the increased wall thickness giving you and your customers a safer, more reliable tube.
Zight for Steam Boilers squart blue

United Glass LLC

LEVEL GAUGE GLASS ZIGHT & TRANSPARENT

Made in Tempered Borosilicate, this type of level glass is used in different applications where both chemical resistance and a low thermal expansion coefficient are requested.

How can I be sure that I get a top-quality glass?
All ZIGHT glasses which claim to be high quality need to be melted, machined, tempered, and tested according to the same international standard. If it is DIN7081, it is quality.

How can I rely on Zight for projects which might take longer to complete?
We understand that projects which require Level Gauge Glasses sometimes require very high volumes distributed throughout larger periods of time. At United Glass, we are prepared for the challenge. By working closely with your sales rep, we can anticipate your demand and make sure we always keep at hand the glass you need at hand. Click here to browse the full catalog of products.

Need gaskets? We have them
We can make the optimal gaskets for your application, in any size of glass you have.

United Glass LLC

Flat Quartz Sight Glass Product Image

How can I be sure that I get a top-quality glass?
All Circular Tempered Boro Disc glasses which claim to be high quality need to be melted, machined, tempered, and tested according to the same international standard. If it is DIN7080, it is quality.

TEMPERED BOROSILICATE CIRCULAR SIGHT GLASS

Manufactured in 3.3 Borosilicate Glass, these sight glasses are used in several applications where a good chemical resistance and low thermal expansion coefficient are required. A bad chemical resistance may cause glass to react and release unwanted substances in the process, such as arsenic which is formed when a non-borosilicate glass reacts with water.

Custom size? No problem!
Special dimensions of glasses are available upon request, where the minimum diameter is 2/5”, and the maximum diameter is 13.78”. The thickness can be manufactured to a minimum of 1/8” and a maximum of 1 3/8”. Do not hesitate to contact us for recommendations as to which sight glass fits your application the best. Click here to browse the full catalog of products.

Need gaskets? We have them
We can make the optimal gaskets for your application, in any size of glass you have.
Zight for Steam Boilers squart blue

United Glass LLC

Level-Sight-Glasses-for-Boiler-Brass-VN200-Series

LEVEL GAUGE GLASS FOR BOILER

Brass Series VN250
The valves are forged in a single piece, which guarantees excellent resistance to pressure and the most adverse conditions. Since this equipment is designed for use in boilers, the standard connection is 1/2 ”NPT and the design pressure of the level valves is 250 PSI. Depending on the pressure to work and temperature to work, the type of tube will be recommended (standard wall, high-pressure wall, or extra-reinforced wall) Gaskets which are included are Zyton, but EPDM or PTFE are available upon request.

The valves can support protective rods, these can be made of 304 stainless steel threaded at the ends; or in aluminum pressed in the upper part. Discover more! Click here for product details.

ASME Compliant
In accordance with ASME - Section I Code, our valves undergo the proper pressure testing and are laser-engraved with a "250PSI WSP" marking to indicate their rating. This mark does not comes off with usage.

When comparing, make sure to include the gaskets
Our Zight Level Gauge Valves include ZYTON gaskets (value of USD$5.30). Option of EPDM or PTFE are also available. Click here for product details.
Zight for Steam Boilers image

United Glass LLC

Zight for Steam Boilers image

ZYTON GASKETS

This material was designed by ZIGHT to outperform the leading tubular gasket brands (including Viton gaskets by Chemours)...but at a much lower cost. Our unique mix of synthetic rubber and fluorine infused polymers gives our Zyton gaskets added resistance to mechanical tightening and longevity against the harsh effects of heat and pressure (up to 500°F and 300 psi).

Zight for Steam Boilers imagen table
Your valves include them
Each set of ZIGHT level gauge valves inclue a pair of ZYTONS to use with your glass. Make sure to always give the best to your customers.
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