A PE cap seals the open end of a polyethylene pipe. It keeps water in and dirt out.
Fit one at the end of farm and irrigation lines. In addition, use caps to seal pipe ends during pressure tests.
What is a PE cap?
An HDPE end cap closes the open end of a polyethylene pipe. It stops flow at a dead end and keeps dirt out of a line that will be extended later.
Caps come as compression caps, which screw on with an O-ring, or fusion caps, which are welded on. Both resist corrosion underground.
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
- Seals the end of HDPE pipe.
- Compression or fusion types.
- Removable compression caps allow later extension.
- Corrosion-free body.
Technical specifications
| Product | PE cap |
|---|---|
| Material | Polyethylene or polypropylene body, depending on type |
| Joint | Compression or fusion |
| Use | Closes pipe ends |
| 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 a PE cap
- Dead ends. Closes the end of a water main.
- Future extensions. Seals a line that will be extended later.
- Pressure testing. Closes pipe ends during testing.
- Irrigation laterals. Closes the ends of laterals and allows flushing.
- Flushing points. Allows a line to be opened and flushed.
- Temporary site lines. Closes temporary water lines.
- Pipe storage. Keeps dirt and insects out of stored pipe.
- Repairs. Closes a cut line while repairs continue.
How to choose and install
- Match the cap to the pipe OD in mm.
- Use a compression cap where you may extend the line.
- Anchor caps on large mains, because pressure pushes on the end.
- Check the O-ring is seated before tightening.
Why choose Sparks Plumbing Experts
- Every common pipe materialGI, PPR, PVC, HDPE, brass and stainless fittings are all stocked, so you can match any existing system.
- Common sizes in stockMost fitting types come in several sizes, from small domestic sizes up to larger mains sizes.
- Pipes, fittings and valves togetherPipes, fittings, valves, clamps and jointing products come in one order.
- Help with thread and size standardsWe help you confirm inch and millimetre sizes before you buy, which avoids return trips.
- 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
Is a PE cap the same as an end cap?
Yes. Both names describe a fitting that closes a pipe end.
What details do you need to quote HDPE end caps?
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 end caps 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 end cap 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 end caps be buried?
Yes. HDPE is well suited to burial. Bed it in sand or fine soil and keep sharp stones away.
Do HDPE end caps resist sunlight?
Black HDPE contains carbon black, which protects it from UV. Even so, burying or shading pipe extends its life.
Can an HDPE end cap be removed later?
Compression caps can. Fusion caps must be cut off.
Does a capped main need anchoring?
Large mains do, because water pressure pushes on the cap. Follow your design.
Why does an end cap leak?
The pipe end may be uncut or not fully inserted, or the O-ring is damaged.
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Remove the end cap, run water until clear, then refit the cap.
HDPE end cap price in Kenya
Prices change with size, model and quantity. Request a quote from Sparks Plumbing Experts for current figures.
HDPE vs PVC pipe
HDPE is flexible and fusion or compression jointed. PVC is rigid and glued.
HDPE vs PPR pipe
HDPE suits buried cold water mains. PPR suits hot and cold water inside buildings.
HDPE pipe sizes in mm
HDPE is sized by outside diameter, for example 20, 25, 32, 50, 63, 90 and 110 mm.
PN10 vs PN16 HDPE
PN16 pipe has a thicker wall and is rated for higher pressure than PN10.
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