Grooved Pipe Fittings
Grooved pipe fittings join pipes without welding or threading: a two-piece housing seats in a groove cut or rolled into the pipe end and an EPDM gasket seals the joint. When the bolts are tightened the gasket wraps the pipe, and line pressure further improves the seal.
Rigid, flexible and reducing couplings; equal, cross and mechanical tees; 45° and 90° elbows, caps, concentric reducers, grooved flanges and flange adapters are available from 1″ to 12″. Besides sprinkler and hose-reel lines they serve cooling water, HVAC and process water piping.
Main Applications
- Sprinkler risers and branch lines
- Fire hose cabinet and hydrant supply lines
- Fire pump room suction and discharge headers
- Chiller and cooling tower water lines
- HVAC hot and chilled water distribution
- Process and cooling water sections needing frequent service
- Vibration isolation at pump outlets (flexible coupling)
Technical Data
| Connection | Grooved (roll or cut groove); no welding or threading |
|---|---|
| Size range | 1″ – 12″ (product range, by fitting type) |
| 2½” size | For 76.1 mm OD pipe (product range) |
| Housing | Ductile iron GGG 40.3 (manufacturer data) |
| Standard gasket | EPDM, −34 °C … +150 °C (manufacturer catalogue) |
| Optional gaskets | Silicone −40 °C … +177 °C; nitrile −29 °C … +82 °C (manufacturer catalogue) |
| Bolts and nuts | Galvanized carbon steel (manufacturer data) |
| Coupling types | Rigid, flexible, reducing |
| Branch outlets | Mechanical tee with grooved or threaded outlet, U-bolt mechanical tee |
| Direction and size change | 45° and 90° elbows, equal and cross tees, concentric reducers |
| Flange transition | Grooved flange and flange adapter |
| Working pressure | By model and pipe wall thickness |
Material Options
| Part | Coupling | Elbow, tee, cap | Grooved flange |
|---|---|---|---|
| Housing / body | Ductile iron GGG 40.3 | Ductile iron GGG 40.3 | Ductile iron GGG 40.3 |
| Gasket | EPDM (standard); silicone or nitrile (by model) | None; joined with a coupling | EPDM (standard) |
| Bolts and nuts | Galvanized carbon steel | Coupling bolts are used | Galvanized carbon steel |
| Finish | Painted (by model) | Painted (by model) | Painted (by model) |
Which material? EPDM is the standard gasket for sprinkler and cold water lines; choose nitrile for oily media and silicone for high temperatures. Because the pressure rating depends on pipe wall thickness, projects that require approval certificates have the model’s certificate confirmed with the order.
Advantages
Weld-Free Installation
- No hot-work permit needed
- Safe assembly in fire-risk areas
Fast Dismantling
- Housing opens with two bolts
- No pipe cutting during maintenance
Vibration Control
- Flexible coupling absorbs angular and axial movement
Easy Branching
- Mechanical tee takes an outlet from a drilled pipe
One System
- Couplings, fittings and flanges share the same groove size
Construction and Design Features
- Two-piece ductile iron housing seated in the pipe-end groove
- C-profile EPDM gasket wrapping the pipe inside the housing
- Joint tightened with galvanized bolts and nuts
- Housing profile that locks movement in rigid couplings and leaves a gap in flexible ones
- Direct transition to valve and pump flanges with a flange adapter
Send the pipe size, fitting type and quantity; we will prepare the grooved fitting list for your sprinkler project right away.
How to Choose?
- Confirm the pipe sizeCheck the pipe outside diameter; 76.1 mm pipe is common on 2½” lines.
- Choose the coupling typeUse rigid couplings on straight runs and flexible couplings at pump outlets and expansion points.
- Decide the branch methodUse a grooved tee on new lines and a drilled mechanical tee on existing ones.
- Match the gasket to the mediumSpecify EPDM for water, nitrile for oily media and silicone for hot lines.
Complementary Products
Why ORFA?
Types of 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.
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U-Bolt Mechanical Tees
U-bolt mechanical tees are fixed to the pipe with a U-bolt and give a branch without welding.
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Grooved 45° Elbows
Grooved 45° elbows change direction by 45 degrees on grooved pipelines and are joined with couplings.
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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.
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Grooved Flanges
Grooved flanges connect a grooved pipe end to a flanged valve or piece of equipment.
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Grooved Flange Adaptors
Grooved flange adaptors move a grooved pipeline to a flanged connection.
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Grooved Crosses
Grooved crosses split flow in four directions on grooved pipelines.
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Grooved Caps
Grooved caps close the end of a grooved pipe and are joined with a coupling.
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Grooved Concentric Reducers
Grooved concentric reducers change pipe size on grooved lines along the same centre line.
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Grooved x Threaded Concentric Reducers
Grooved x threaded concentric reducers have one grooved end and one threaded end and change pipe size.
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Grooved Mechanical Tees
Grooved mechanical tees give a grooved branch through a hole cut in the pipe, without welding.
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Grooved Rigid Couplings
Grooved rigid couplings join grooved pipes with a fixed, solid connection.
Details →Other Water Fire Suppression Systems
Flow Switch
Flow switches send a signal to the alarm panel when water starts flowing in the sprinkler line, indicating a fire.
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Flow Meters
Flow meters measure the flow delivered by the fire pump on pump test lines.
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Pressure Relief Valve
Pressure relief valves protect the installation by discharging excess water when overpressure occurs in fire pump systems.
Details →Deluge Alarm System and Equipment
Deluge alarm systems supply water simultaneously to open sprinkler or nozzle lines upon a detection signal.
Details →Wet Alarm Valve System and Equipment
Wet alarm valve systems are the main control valve and equipment that raise an alarm when a sprinkler opens in water-filled sprinkler lines.
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Fire Department Suction Connection
Fire department suction connections are connection points that allow fire trucks to draw water from a reservoir or installation.
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Fire Department Inlet Connection
Fire department inlet connections allow fire trucks to pump water into the building fire installation from outside.
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Butterfly Valve with Limit Switch
Butterfly valves with limit switch report the valve position to the alarm panel in fire protection lines.
Details →Dry Alarm Valve System and Equipment
Dry alarm valve systems are valves and equipment controlling sprinkler lines filled with pressurized air in areas at risk of freezing.
Details →
NRS Non-Rising Stem Valve
NRS non-rising stem valves are fire line gate valves whose stem does not rise, suitable for limited spaces.
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NRS Valve Supervisory Switch
NRS valve supervisory switches report the open or closed position of non-rising stem valves to the fire alarm panel.
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OS&Y Rising Stem Valve
OS&Y rising stem valves are fire line gate valves whose open or closed position can be seen from the stem.
Details →OS&Y Valve Supervisory Switch
OS&Y valve supervisory switches detect the position of rising stem valves and report it to the fire alarm panel.
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Preaction Systems
Preaction systems release water into the piping only after a detection signal, used where accidental discharge must be avoided.
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Post Indicator
Post indicators allow underground fire line valves to be operated from above ground and show their position.
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Test and Drain Valve
Test and drain valves allow flow testing and draining of sprinkler lines.
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Waste Cone
Waste cones direct water from test and drain lines to the drain in a visible way.
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Fire Check Valve
Fire check valves are approved check valves that prevent backflow in fire protection installations.
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Fire Hose Cabinets
Fire hose cabinets house the hose, nozzle and valve together and are used for first response in buildings.
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Fire Systems Pressure Reducing Valve
Fire systems pressure reducing valves lower excess pressure on lower floors of high-rise buildings to a suitable value for fire equipment.
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Fire Sprinklers
Fire sprinklers open when the ambient temperature rises and automatically spray water onto the fire area.
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Fire Valves
Fire valves are approved valves used to open and shut off lines in fire protection installations.
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Above Ground Fire Hydrants
Above ground fire hydrants are outdoor hydrants that allow fire crews to draw water from the mains.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.