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  1. Home
  2. PVC Pipe and Fittings
  3. Inch (Imperial) PVC Fittings and Valves
  4. Inch Plain PVC Fittings
  5. Inch PVC Sightglass

Imperial PVC Sightglass

Please note that different manufacturers of these items are not compatible as the threads will be different. If you require an item from a certain manufacturer, please contact our sales team, as we dispatch whichever manufacturer we have in stock at the time of your order. Additionally, clear PVC pipe has a slight blue/grey tinge to it and so should not be expected to be 100% optically clear.

For full product information and dimensions, please download our sightglass spec sheet.

Sight glasses are useful for observing the fluid in a pipe system.

They can be used as a check for presence or not of fluid, a visual indicator of the colour or level of bubble entrainment and are sometimes used in conjunction with proximity switches to maintain water levels with systems. The clear section of the sightglass is 125mm (regardless of the size of the pipework) and the union ends provide solvent cement sockets. Unions facilitate easy removal for cleaning which is often required if the fluid in the system has organics (bacterial formation), is exposed to sunlight (algae formation) or is mounted horizontally in a system where suspended solids may settle out.

1/2
1/2" Sightglass Double Union PVC
Part Number: 15467-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£22.26 (£26.71 inc VAT)
3/4
3/4" Sightglass Double Union PVC
Part Number: 15468-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£28.68 (£34.42 inc VAT)
1
1" Sightglass Double Union PVC
Part Number: 15469-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£34.38 (£41.26 inc VAT)
1 1/4
1 1/4" Sightglass Double Union PVC
Part Number: 15470-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£43.26 (£51.91 inc VAT)
1 1/2
1 1/2" Sightglass Double Union PVC
Part Number: 15471-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£50.69 (£60.83 inc VAT)
2
2" Sightglass Double Union PVC
Part Number: 15472-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£62.26 (£74.71 inc VAT)
3
3" Sightglass Double Union PVC
Part Number: 15474-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£93.52 (£112.22 inc VAT)
4
4" Sightglass Double Union PVC
Part Number: 15475-P

10 bar WP, WRAS approved (suitable for potable water)

Currently in stock at our UK warehouse

£105.80 (£126.96 inc VAT)
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