Stainless Steel Threaded Ball Valves
A stainless threaded ball valve is a two piece ball valve whose body, ball and stem are made of stainless steel and whose ends are threaded. Thanks to its corrosion resistance it is used on chemical, food and steam condensate lines where a brass body is not sufficient.
Products are offered in AISI 304 and AISI 316 grades and in thread sizes from 1/4″ to 4″. Molybdenum alloyed AISI 316 is preferred for chloride bearing water and aggressive media.
Main Applications
- Process lines in food, beverage and dairy plants
- Small bore media lines in chemical and pharmaceutical plants
- Condensate pockets and drain points on steam lines
- Seawater and shipbuilding applications
- Paper mill and textile dyehouse lines
- Laboratory and sampling points
Technical Data
| Connection | Threaded (female) |
|---|---|
| Thread size | 1/4″ – 4″ |
| Pressure class | PN63 (according to product names) |
| Temperature | −25 °C … +180 °C (depending on material) |
| Body construction | Two piece |
| Body and cap | AISI 304 or AISI 316 |
| Ball and stem | AISI 304 or AISI 316 |
| Ball seat | R-PTFE (15%) |
| Operating torque | 1/2″: 5 N·m · 1″: 10 N·m · 2″: 25 N·m · 4″: 110 N·m |
| Length (L) | 1/2″: 75 mm · 1″: 90 mm · 2″: 140 mm · 4″: 240 mm |
| Weight | 1/2″: 0.33 kg · 2″: 2.93 kg · 4″: 20.1 kg |
| Operation | Lockable lever (depending on model) |
Material Options
| Part | PN63 · AISI 304 | PN63 · AISI 316 |
|---|---|---|
| Body | Stainless steel AISI 304 | Stainless steel AISI 316 |
| Cap | Stainless steel AISI 304 | Stainless steel AISI 316 |
| Ball | Stainless steel AISI 304 | Stainless steel AISI 316 |
| Stem | Stainless steel AISI 304 | Stainless steel AISI 316 |
| Ball seat | R-PTFE (15%) | R-PTFE (15%) |
| Body gasket | PTFE | PTFE |
| Packing and seal | PTFE | PTFE |
| Gland nut | Stainless steel AISI 304 | Stainless steel AISI 304 |
| Lever and lock | Stainless steel AISI 304 | Stainless steel AISI 304 |
| Lever sleeve | Plastic | Plastic |
The table is from the manufacturer part list of a two piece stainless threaded valve; when AISI 316 is selected, the wetted parts are 316 while external fasteners remain 304. The pressure class is taken from product names; the pressure derating with temperature is read from the datasheet chart.
Advantages
Corrosion Resistant
- All metal parts in contact with the medium are stainless.
- Rust and scale do not contaminate the medium.
High Pressure Class
- PN63 suits small bore high pressure lines.
- The body has a wide margin against pressure surges.
Grade Choice
- AISI 304 is economical for general use.
- AISI 316 is preferred in chloride bearing and aggressive environments.
Light and Compact
- A 1/2″ valve weighs about 0.33 kg.
- The short length eases installation in tight panels.
Construction and Design Features
- The cap screws into the body and clamps the ball between two R-PTFE seats.
- The stem is fitted from inside the body; sealing is adjusted with PTFE packing and a gland nut.
- The lever is fixed to the stem with a stainless lock part.
- A plastic lever sleeve makes handling easier on hot lines.
- The quarter turn travel is limited by a stop on the lever.
Send us the thread size, AISI grade and medium; we will confirm the suitable model and stock status.
How to Choose?
- Select the gradeChoose AISI 304 for general water and air, AISI 316 for chloride bearing or aggressive media.
- Confirm the thread sizeMatch the pipe or nipple thread on the line within the 1/4″–4″ range.
- Check the temperatureRead the permissible pressure at operating temperature from the datasheet chart.
- Note the torqueOperating torque rises with size; a 4″ valve needs 110 N·m.
- Decide on the operatorChoose a lockable lever model on lines that need a fixed position.
Complementary Products
Why ORFA?
Types of Stainless Steel Threaded Ball Valves
2-Piece Stainless Steel Threaded Ball Valves
2-piece stainless steel threaded ball valves have a two-piece stainless body and threaded ends.
Details →
3-Piece Stainless Steel Threaded Ball Valves
3-piece stainless steel threaded ball valves have a three-piece stainless body that can be serviced without removing the valve from the line.
Details →Other Threaded Ball Valves
Cast Iron Threaded Ball Valves
Cast iron threaded ball valves have a cast body and threaded ends and open or shut off flow with a quarter turn.
Details →
Brass Threaded Ball Valves
Brass threaded ball valves have a brass body and threaded ends and are widely used on water, heating and gas installations.
Details →
Threaded PVC-U Ball Valves
Threaded PVC-U ball valves are ball valves with a rigid PVC (PVC-U) body and threaded connections. Thanks to their corrosion resistance they are used in water treatment, pool, irrigation and chemical fluid lines.
Details →
Threaded PPRC Ball Valves
Threaded PPRC ball valves are ball valves with a PPRC body and threaded connections. They are used in hot and cold water supply and heating installations.
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Coupling Ball Valves
Coupling ball valves are plastic ball valves fitted to PE coil pipes with push-fit coupling connections. They allow easy and fast installation in irrigation, garden and water supply lines.
Details →
PVC Threaded Ball Valves
PVC threaded ball valves are ball valves with a plastic body and threaded connections. Thanks to their corrosion resistance they are used in water treatment, pool, irrigation and chemical fluid lines.
Details →Get a quote for your project
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