Galvanized Reducing Tees
A galvanized reducing tee is a zinc-coated malleable cast iron tee with female-threaded ends of different sizes, used to take a smaller branch from a water main. It combines a tee and a reducer in one body.
Apartment connections from risers, transitions from sprinkler mains to branch lines and valve outlets from irrigation mains are the main uses of galvanized reducing tees. More than 35 sizes are available for main line sizes from 1/2″ to 3″.
Main Applications
- Apartment and floor connections from water risers
- Transitions from sprinkler mains to branch lines
- Valve and drip outlets from irrigation mains
- Small-bore distribution at tank outlets
- Service lines from booster set manifolds
- Sampling from process water lines
Technical Data
| Fitting type | Reducing tee |
|---|---|
| Product standard | TS EN 10242, design symbol A (manufacturer information) |
| Material | Malleable cast iron (depending on model) |
| Coating | Hot-dip galvanized, inside and outside |
| Coating mass | Average at least 500 g/m² (sales sheet information) |
| Thread | ISO 7-1 Rp parallel female thread on all three ends |
| Main line size | 1/2″ – 3″ (product range) |
| Example sizes | 3/4″ × 1/2″ × 3/4″, 1 1/4″ × 1″ × 1 1/4″, 2″ × 1 1/2″ × 2″, 3″ × 2″ × 3″ (product range) |
| Size combinations | More than 35 (product range) |
| Permissible pressure | 25 bar, −20 … +120 °C (EN 10242, design A) |
| Leak test | At least 5 bar air or 20 bar water (sales sheet information) |
| Equal-size branch | With a galvanized tee |
Material Options
| Part | Galvanized malleable iron | Black malleable iron | Stainless steel casting |
|---|---|---|---|
| Body | Malleable iron EN-GJMB-350-10 (depending on model) | Blackheart malleable cast iron B 350-10 | Investment casting 1.4408 (AISI 316 equivalent), depending on model |
| Surface | Hot-dip zinc | Black, uncoated | Stainless, uncoated |
| Thread | ISO 7-1 Rp female thread | ISO 7-1 Rp female thread | Depending on model |
| Pressure rating | 25 bar −20…120 °C (EN 10242) | 25 bar −20…120 °C, 20 bar 300 °C (EN 10242) | Depending on model |
| Suitable media | Cold domestic water, fire and irrigation water | Closed heating water, gas, compressed air | Corrosive media and media requiring hygiene |
Which material? In water and sprinkler distribution a galvanized reducing tee keeps zinc protection at the point where the branch begins; black reducing tees are used in closed heating risers.
Advantages
Size Transition in One Piece
- One body instead of a tee plus reducer
Suited to Sprinkler Distribution
- Direct transition from the main to branch lines
Wide Combination
- More than 35 main line / branch sizes
Fewer Threaded Joints
- Every fitting removed reduces a leak risk
Construction and Design Features
- Straight-through ends at main line size, side end at branch size
- Size order: run × branch × run
- Hot-dip zinc-coated body
- TS EN 10242 design A
Send the sizes of the three ends in order and the quantity; we will confirm the galvanized reducing tee size in stock right away.
How to Choose?
- Measure the main line sizeThe two straight-through ends are chosen by the main pipe size.
- Determine the branchMeasure the size of the branch line or the connected valve.
- Write the size in orderUse the order run × branch × run when ordering.
- Confirm the mediumChoose galvanized for water and sprinklers, black for closed heating.
Complementary Products
Why ORFA?
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Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.