Stainless Steel Sockets
A stainless socket is a stainless fitting with two female-threaded ends that joins two threaded stainless pipes of the same size in a straight line. It keeps the material of the line uniform at the joint.
It is used to join pipes and to create a female-threaded port at a pipe end on stainless lines in food, chemical and marine environments. 12 sizes from 1/8″ to 4″ are available in AISI 304, and 1″ and 2″ in AISI 316.
Main Applications
- Joining threaded stainless pipes
- Female-threaded connection port at a pipe end
- Threaded ports on tanks and vessels instead of weld couplings (depending on model)
- Small-bore instrument and control lines
- Seawater and air piping on vessels and coastal sites
- Chemical dosing lines
Technical Data
| Fitting type | Straight socket, two female-threaded ends |
|---|---|
| Product standard | ISO 4144 (manufacturer sheet) |
| Material | AISI 304; AISI 316 in selected sizes (product range) |
| 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 | 1″, 2″ (product range) |
| 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) |
| Between different sizes | With a stainless reducing bush |
| Detachable joint | With a stainless taper seat union |
| Surface | Stainless, uncoated |
Material Options
| Part | AISI 304 stainless | AISI 316 stainless | Galvanized malleable iron |
|---|---|---|---|
| Body | AISI 304 stainless steel, cast or bar depending on model | AISI 316 stainless steel, 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? Fitting a galvanized socket to stainless pipe can accelerate corrosion through dissimilar metal contact; always use stainless sockets on stainless lines.
Advantages
Material Uniformity
- No dissimilar metal contact at the joint
Wide Size Range
- 12 sizes from 1/8″ to 4″
316 Option
- 1″ and 2″ for chloride environments
Simple Joint
- Two pipes join with a single piece
Construction and Design Features
- Symmetrical body with two Rp female-threaded ends
- Uncoated stainless surface
- ISO 4144 pressure-temperature ratings
- Screwed installation without welding
Send the socket size, grade and quantity; we will confirm the lead time for other sizes in grade 316.
How to Choose?
- Measure the pipe sizeBoth pipes must be the same size; if not, use a reducing bush.
- Choose the gradeChoose 304 for general use and 316 sockets for chloride environments.
- Avoid dissimilar metalsDo not use galvanized or black sockets on stainless pipe.
- Verify pressure at temperatureUse the ISO 4144 values according to the line temperature.
Complementary Products
Why ORFA?
Other Stainless Steel Threaded Fittings
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Stainless Steel Conical Unions
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Stainless Steel Street Elbows
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Stainless Steel Nipples
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Details →Get a quote for your project
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