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Instructional Gauge Glass Video In Stock

 

Gauge Glass Instructional Video

Simple sight glasses may be just a plastic or glass tube connected to the bottom of the tank at one end and the top of the tank at the other. The level of liquid in the sight glass will be the same as the level of liquid in the tank. Today, however, sophisticated float switches have replaced sight glasses in many such applications.

 

If the liquid is hazardous or under pressure, more sophisticated arrangements must be made. In the case of a boiler, the pressure of the water below and the steam above is equal, so any change in the water level will be seen in the gauge. The transparent tube (the “glass” itself) may be mostly enclosed within a metal or toughened glass shroud to prevent it from being damaged through scratching or impact and offering protection to the operators in the case of breakage. This usually has a patterned backplate to make the magnifying effect of the water in the tube more obvious and so allow for easier reading. In some locomotives where the boiler operated at very high pressures, the tube itself would be made of metal-reinforced toughened glass.It is important to keep the water at the specified level, otherwise the top of the firebox will be exposed, creating an overheat hazard and causing damage and possibly catastrophic failure.

 

To check that the device is offering a correct reading and the connecting pipes to the boiler are not blocked by scale, the water level needs to be “bobbed” by quickly opening the taps in turn and allowing a brief spurt of water through the drain cock.

 

Other Recommended Products:

In-stock orders eligible for small-pack shipments placed before 2:00 PM EST, Monday through Friday, will ship the same day. If ordered after 2:00PM EST, it will ship the following business day.

Items to be returned must be approved by Power Plus International, Inc. DBA Boiler USA, and may be subjected to a restocking fee

Notice: Due to the uncontrollable metal costs, all prices and delivery times are subject to change on a daily basis.

PPI™ and Power Plus International™, and related marks and logos displayed on the Site, are our trademarks and may not be used in any way without our prior express written permission. Nothing contained on the Site shall be construed as granting, by implication, estoppel or otherwise, any license or right to use any of our marks displayed on the Site without our prior express written permission. All other trademarks not owned by us that appear on this Site are the property of their respective owners.

*NOTE: The products described herein are not manufactured by Patterson-Kelley nor is Power Plus International, Inc. DBA Boiler USA in any way associated or affiliated with "PK", Patterson-Kelley, or Harsco Corporation.

Contact Us Directly:
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
Contact Us Directly:
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© 2026 Power Plus International, Inc. d/b/a Boiler USA, All Rights Reserved.
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
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0.00033402442932129SELECT products.id, products.product_code, products.title, products.is_rfq, products.meta_description, products.use_structured_data_tag, products.manufacturer_id, catalog_categories.parent_id AS parent_category_id, manufactures.title AS manufacturer, catalog_categories.title AS category
FROM products
LEFT JOIN manufactures ON (products.manufacturer_id = manufactures.id)
LEFT JOIN catalog_categories ON (products.category_id = catalog_categories.id)
WHERE products.id = '827'
LIMIT 1
0.00022983551025391SELECT title
FROM catalog_categories
WHERE id = '78'
LIMIT 1
0.0012907981872559SHOW COLUMNS
FROM ads
0.00034213066101074SELECT COUNT(*)
FROM ads
WHERE 1 AND status =1
0.00045108795166016SELECT id, url, category_id
FROM products
WHERE id = '171' OR url = '171'
LIMIT 1
0.00029206275939941SELECT url, title, own_page, parent_id
FROM catalog_categories
WHERE id = '191'
LIMIT 1
0.00023818016052246SELECT url, title, own_page, parent_id
FROM catalog_categories
WHERE id = '76'
LIMIT 1
0.00035691261291504SELECT id, url, category_id
FROM products
WHERE id = '174' OR url = '174'
LIMIT 1
0.00041484832763672SELECT id, url, category_id
FROM products
WHERE id = '738' OR url = '738'
LIMIT 1
0.00023603439331055SELECT url, title, own_page, parent_id
FROM catalog_categories
WHERE id = '269'
LIMIT 1
0.00035285949707031SELECT id, url, category_id
FROM products
WHERE id = '708' OR url = '708'
LIMIT 1
0.00023293495178223SELECT url, title, own_page, parent_id
FROM catalog_categories
WHERE id = '251'
LIMIT 1
0.00028610229492188SELECT url, title, own_page, parent_id
FROM catalog_categories
WHERE id = '246'
LIMIT 1
0.0013689994812012SHOW COLUMNS
FROM megamenu
0.02761697769165SELECT COUNT(*)
FROM megamenu
WHERE 1
0.00054192543029785SELECT id AS id, title AS title, href AS href, type AS type, parent_id AS parent_id, pos AS pos
FROM megamenu
WHERE 1
ORDER BY id
Total: 0.083470821380615

 _showPOST
POST is empty