Grooved Caps
A grooved cap is a ductile iron blind cover that closes the end of a pipeline with a coupling. Unlike a welded closure it can be removed, so when the line is extended the cap is taken off and the new pipe connected.
It is used at sprinkler branch ends, on mains to be extended later and as a temporary closure during pressure tests. Caps from 1¼” to 12″ need just one coupling at the end.
Main Applications
- Sprinkler branch and main line ends
- Distribution lines to be extended later
- Temporary closure during pressure tests
- Unused outlets on headers
- Line ends reserved for maintenance
Technical Data
| Type | Cap (blind cover) |
|---|---|
| Connection | Grooved; one coupling |
| Size | 1¼”, 1½”, 2″, 2½” (76.1 mm), 3″, 4″, 5″, 6″, 8″, 10″, 12″ (product range) |
| Body | Ductile iron GGG 40.3 (manufacturer data) |
| Gasket | None on the cap; coupling gasket is used |
| Finish | Painted (by model) |
| Working pressure | Per the coupling and pipe used |
| Drainage | Blind type; separate valve if drainage needed |
Material Options
| Part | Cap |
|---|---|
| Body | Ductile iron GGG 40.3 |
| End | Groove on one end |
| Sealing | EPDM gasket of the coupling |
| Finish | Painted (by model) |
Which material? If the line end needs draining or testing, consider a test and drain valve or a threaded-outlet fitting instead of a cap.
Advantages
Removable Closure
- No cutting when the line is extended
Fast Assembly
- Minutes with a single coupling
Easier Testing
- Temporary closure for pressure tests
Weld-Free End
- No hot work required
Construction and Design Features
- One-piece cast blind cap body
- End machined for the coupling groove
- Domed cover surface that resists pressure
- End length suited to coupling assembly
Send the cap size and quantity; we will quote it with the coupling for the end.
How to Choose?
- Identify the line endsNote the size of every end to be closed.
- Think about extensionIf the line will grow, a cap is the right choice.
- Add the couplingAllow one rigid coupling per cap.
- Check drainage needsAdd a test and drain valve if draining is required.
Complementary Products
Why ORFA?
Other Grooved Pipe Fittings
Threaded Mechanical Tees
Threaded mechanical tees are used to take a threaded branch off a pipeline without welding.
Details →
Reducing Couplings
Reducing couplings join two grooved pipes of different sizes.
Details →
U-Bolt Mechanical Tees
U-bolt mechanical tees are fixed to the pipe with a U-bolt and give a branch without welding.
Details →
Grooved 45° Elbows
Grooved 45° elbows change direction by 45 degrees on grooved pipelines and are joined with couplings.
Details →
Grooved 90° Elbows
Grooved 90° elbows change direction by 90 degrees on grooved pipelines and are joined with couplings.
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Grooved Flexible Couplings
Grooved flexible couplings join grooved pipes while allowing some angular movement and vibration.
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Grooved Equal Tees
Grooved equal tees split flow in three directions of the same size on grooved pipelines.
Details →
Grooved Flanges
Grooved flanges connect a grooved pipe end to a flanged valve or piece of equipment.
Details →
Grooved Flange Adaptors
Grooved flange adaptors move a grooved pipeline to a flanged connection.
Details →
Grooved Crosses
Grooved crosses split flow in four directions on grooved pipelines.
Details →
Grooved Concentric Reducers
Grooved concentric reducers change pipe size on grooved lines along the same centre line.
Details →
Grooved x Threaded Concentric Reducers
Grooved x threaded concentric reducers have one grooved end and one threaded end and change pipe size.
Details →
Grooved Mechanical Tees
Grooved mechanical tees give a grooved branch through a hole cut in the pipe, without welding.
Details →
Grooved Rigid Couplings
Grooved rigid couplings join grooved pipes with a fixed, solid connection.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.