A Hill sight check is a sight flow indicator that lets operators see liquid moving through a pipeline.
Send us the size and end connection, or a photo of the existing unit. Then we will match it.
What is a Hill sight check?
A sight check or sight flow indicator is a fitting with glass windows that lets you see liquid moving in a pipe. Some types include a flap or ball that moves with the flow, and some include a check function.
Operators can confirm flow, colour and clarity at a glance. Therefore, sight indicators are common on condensate, oil and process lines.
Further reading
- Sight glasses explained (Wikipedia)
- Steam traps (Wikipedia)
- Flow measurement (Wikipedia)
Key terms explained
- Sight glass
- A glass window in a fitting that shows the fluid inside.
- Flow indicator
- A flap, ball or rotor that moves to show flow.
- Condensate
- Water formed when steam gives up its heat.
Features and benefits
- Shows flow without opening the line.
- Glass windows for clear viewing.
- Threaded or flanged bodies.
- Suits water, oil and condensate.
Technical specifications
| Product | Hill sight check |
|---|---|
| Type | Sight flow indicator |
| Size and ends | Confirm with quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, grades and ratings depend on stock and model. Tell us what you need, and we will confirm before you order.
Applications of a Hill sight check
- Steam trap discharge. Shows if traps pass condensate correctly.
- Oil lines. Shows lubricant and fuel flow.
- Cooling water. Confirms flow to machines.
- Process lines. Shows product colour and clarity.
- Pump discharge. Confirms pumping.
- Dosing lines. Shows chemical flow.
- Boiler feed. Shows feed water flow.
- Laboratories. Shows flow in test rigs.
How to choose and install
- Match size, ends and rating.
- Check glass temperature and pressure limits.
- Install where the window is easy to see.
- Fit guards where glass could be hit.
Why choose Sparks Plumbing Experts
- Valves, flanges and gaskets togetherComplete a pipeline joint with matching valves, flanges, gaskets and bolts.
- Pressure-rated optionsMany items come in PN16, class 150 or class 300 ratings, so you can match the line.
- Stainless and carbon steelChoose stainless for corrosion resistance or carbon steel where it suits the service.
- Plant maintenance sparesKeep critical spares on hand for planned shutdowns and breakdowns.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya, and we also supply buyers in Uganda and Tanzania.
Related products and accessories
Browse more: Valves · Boiler Accessories · Gauges.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
What details do you need to quote sight checks?
Tell us the size, end connection, fluid and temperature. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver sight checks outside Nairobi?
Yes. We supply customers across Kenya, and we also serve buyers in Uganda and Tanzania. Delivery or courier arrangements are agreed when you confirm the order.
How much does a sight check cost in Kenya?
The price depends on the size, ends, rating and quantity. Therefore, send your list with a quote request and we will reply with current figures.
Can sight glasses take steam?
Only models rated for steam temperature and pressure.
Can the glass be replaced?
On many models, yes. Ask us with the model.
Where should a sight check be installed?
Where operators can see it easily, often after a trap or pump.
Does a sight check stop backflow?
Only types with a built-in check. Confirm the model.
Why is my sight glass cloudy?
Scale or dirt on the glass. Clean it during maintenance.
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