An HDPE flange adaptor connects polyethylene pipe to flanged valves, pumps and meters. It gives a bolted joint that opens for service.
As a result, you can remove a pump or valve without cutting the main. Tell us the pipe OD and the flange drilling to match.
What is an HDPE flange adaptor?
An HDPE flange adaptor joins polyethylene pipe to flanged equipment such as valves, pumps, meters and steel pipe. It has a PE stub end for the pipe and a flange or backing ring with bolt holes.
The stub fuses or clamps onto the HDPE pipe, while the flange bolts to the equipment. Therefore, a plastic main can connect to metal valves and pumps with a joint that opens for service.
Further reading
- High-density polyethylene (HDPE) explained (Wikipedia)
- Plastic pipework materials compared (Wikipedia)
- Plastic welding and fusion joining (Wikipedia)
Key terms explained
- HDPE
- High-density polyethylene, a tough, flexible plastic used for water and gas pipes.
- PE100 and PE80
- Grades of polyethylene. PE100 is stronger, so pipes can have thinner walls for the same pressure.
- PN rating
- Pressure Nominal, the working pressure in bar, such as PN10 or PN16.
- SDR
- Standard Dimension Ratio: outside diameter divided by wall thickness. A lower SDR means a thicker, stronger wall.
- Butt fusion
- Joining two HDPE pipe ends by heating them and pressing them together.
- Compression fitting
- A fitting that seals on the pipe with a nut, split ring and rubber O-ring, with no heat needed.
Features and benefits
- Joins HDPE pipe to flanged valves, pumps and steel pipe.
- Bolted joint that opens for maintenance.
- Corrosion-free PE stub end.
- Backing ring spreads bolt load evenly.
Technical specifications
| Product | HDPE flange adaptor |
|---|---|
| Material | Polyethylene or polypropylene body, depending on type |
| Joint | Fusion stub or compression, with flange |
| Drilling | Confirm PN class with quote |
| Sizes | State the pipe OD in mm or inches when you request a quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, PN rating and joint type (compression or fusion) depend on stock. Tell us the pipe size in mm and the quantity.
Applications of an HDPE flange adaptor
- Pump stations. Connects HDPE mains to flanged pumps.
- Valve chambers. Joins HDPE mains to flanged gate and butterfly valves.
- Water meters. Connects bulk meters on HDPE mains.
- Tank connections. Joins HDPE lines to flanged tank outlets.
- Steel to HDPE transitions. Joins a new HDPE main to existing steel pipe.
- Treatment works. Connects HDPE pipework to filters and dosing units.
- Irrigation headers. Connects mains to flanged filters and valves.
- Borehole headworks. Joins delivery pipe to flanged wellhead fittings.
How to choose and install
- Match the pipe OD in mm and the flange drilling.
- Use a suitable gasket between the faces.
- Tighten bolts evenly in a cross pattern.
- Support heavy valves so the adaptor does not carry their weight.
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: HDPE Pipes & Fittings · Valves · Flanges · Tapes.
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 is an HDPE flange adaptor used for?
It connects HDPE pipe to flanged valves, pumps, meters and steel pipe.
What details do you need to quote HDPE flange adaptors?
Tell us the size in mm or inches, the pressure rating (PN) and the quantity. 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 HDPE flange adaptors 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 HDPE flange adaptor cost in Kenya?
The price depends on the size, the pressure rating and the quantity. Therefore, send your list with a quote request and we will reply with current figures.
Can HDPE flange adaptors be buried?
Yes. HDPE is well suited to burial. Bed it in sand or fine soil and keep sharp stones away.
Do HDPE flange adaptors resist sunlight?
Black HDPE contains carbon black, which protects it from UV. Even so, burying or shading pipe extends its life.
Does an HDPE flange adaptor need a gasket?
Yes. Fit a gasket between the flange faces.
Will it bolt to a steel valve?
Yes, if the drilling matches the valve flange.
How tight should the bolts be?
Tighten evenly in stages until the gasket compresses. Do not overtighten plastic parts.
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