Stainless Steel Threaded Elbows
A stainless threaded elbow is a stainless cast fitting with two female-threaded ends that turns stainless or galvanized pipelines by 90 degrees. Its uncoated surface stays cleanable in food and chemical lines.
It is used for process line turns, CIP cleaning circuits, sampling and instrument lines and installations in marine environments. It is supplied in 12 sizes from 1/8″ to 4″ in AISI 304 and in selected sizes in AISI 316.
Main Applications
- Turns in food and beverage process lines
- CIP and cleaning circuits
- Pipe routes in chemical and pharmaceutical plants
- Instrument and sampling lines
- Seawater and saline environment installations
- Treatment and dosing lines
Technical Data
| Fitting type | 90° elbow, two female-threaded ends |
|---|---|
| Product standard | ISO 4144 (manufacturer sheet) |
| Material | AISI 304; AISI 316 in selected sizes (product range) |
| Production | Investment casting (depending on model) |
| Thread | ISO 7-1 Rp parallel female thread |
| AISI 304 sizes | 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″ (product range) |
| AISI 316 sizes | 3/4″ (product range; ask for others) |
| Pressure, −20 … +38 °C | 20 bar (ISO 4144 Table 2, manufacturer sheet) |
| Pressure, 100 °C | 16.5 bar (ISO 4144 Table 2, manufacturer sheet) |
| Pressure, 150 °C | 15 bar (ISO 4144 Table 2, manufacturer sheet) |
| Type with one male end | With a stainless street elbow |
| Surface | Stainless, uncoated |
Material Options
| Part | AISI 304 stainless | AISI 316 stainless | Galvanized malleable iron |
|---|---|---|---|
| Body | AISI 304 (cast equivalent 1.4308 / CF8, depending on model) | AISI 316 (cast equivalent 1.4408 / CF8M, depending on model) | Malleable iron EN-GJMB-350-10, galvanized |
| Surface | Uncoated stainless | Uncoated stainless | Zinc coated |
| Thread | ISO 7-1 Rp female thread | ISO 7-1 Rp female thread | ISO 7-1 Rp female thread |
| Pressure rating | 20 bar −20…+38 °C (ISO 4144) | 20 bar −20…+38 °C (ISO 4144) | 25 bar −20…120 °C (EN 10242) |
| Suitable media | Food, drinking water, mild chemicals | Chloride-containing water, seawater, aggressive chemicals | Cold domestic water, fire water |
Which material? An AISI 304 elbow is sufficient for turns in process and food lines; AISI 316 elbows should be preferred for chloride-containing water and marine environments.
Advantages
Cleanable Turn
- The uncoated inner surface keeps food lines hygienic
Resistance from the Material
- No coating, so protection is not lost through wear
From Small Bore to Mains
- From 1/8″ instrument lines to 4″ mains
Pressure Rating at Temperature
- 15 bar at 150 °C (ISO 4144)
Construction and Design Features
- Two Rp female-threaded ends at right angles
- Investment-cast body with reinforced connection shoulders (depending on model)
- Conforms to the ISO 4144 pressure-temperature table
- Screwed installation without welding
Send the elbow size, 304 or 316 grade and quantity; we will confirm stainless elbows from stock.
How to Choose?
- Choose the materialUse AISI 304 for food and clean water, AISI 316 for chloride-containing and marine environments.
- Measure the sizeBoth ends of the elbow are the same size; add a reducer for a different size.
- Check the end typeIf one end goes directly to equipment, a street elbow removes the intermediate nipple.
- Compare pressure at temperatureIf the line runs at 100 °C use the 16.5 bar limit, at 150 °C the 15 bar limit.
Complementary Products
Why ORFA?
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Details →Get a quote for your project
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