2-Piece Stainless Steel Threaded Ball Valves
A 2-piece stainless steel threaded ball valve has a body formed by two parts screwed together, with ball and stem also in stainless steel. Its simple design and strong body make it the most common stainless valve type.
It is offered in AISI 304 and AISI 316 from ¼” to 4″; the ball seats are 15 % glass-filled PTFE. According to the manufacturer datasheet a ½” valve opens at 5 N·m and a 4″ valve at 110 N·m, with lengths from 75 mm to 240 mm.
Main Applications
- Food, beverage and dairy process lines
- Fluid lines in chemical and pharmaceutical plants
- Steam condensate drain points
- Seawater and marine installations
- Laboratory and sampling lines
Technical Data
| Body design | Two-piece |
|---|---|
| Connection | Female thread |
| Thread size | ¼” – 4″ |
| Pressure class | PN63 |
| Temperature | −25 °C … +180 °C (by material) |
| Body, ball, stem | AISI 304 or AISI 316 |
| Ball seat | R-PTFE (15 %) |
| Opening torque | ½”: 5 N·m · 1″: 10 N·m · 2″: 25 N·m · 4″: 110 N·m |
| Length (L) | ½”: 75 mm · 1″: 90 mm · 2″: 140 mm · 4″: 240 mm |
| Operation | Lockable handle (by model) |
Material Options
| Part | AISI 304 | AISI 316 |
|---|---|---|
| Body and cap | AISI 304 | AISI 316 |
| Ball and stem | AISI 304 | AISI 316 |
| Ball seat | R-PTFE (15 %) | R-PTFE (15 %) |
| Packing | PTFE | PTFE |
Which material? A 2-piece valve cannot be serviced without removing it from the line; on lines needing frequent service a 3-piece valve with removable centre body is preferred. AISI 316 is chosen for chloride-bearing water.
Advantages
Rugged Body
- Simple two-piece design
High Pressure
- PN63
Corrosion Resistance
- AISI 304 or 316
Lockable Handle
- Against unauthorised operation
Construction and Design Features
- Two-piece body screwed together
- Stainless steel ball and stem
- R-PTFE ball seats
- Stainless handle with lock slot
Write the thread size, medium and material grade; we will confirm the 2-piece stainless valve with stock details.
How to Choose?
- Define the mediumChoose AISI 316 if chlorides or acids are present.
- Select the sizePick the pipe thread from ¼”–4″.
- Consider service frequencyEvaluate the 3-piece type for frequent maintenance.
- Check the temperatureConfirm the 180 °C limit and pressure derating.
Complementary Products
Why ORFA?
Other Stainless Steel Threaded Ball Valves
Our 2-Piece Stainless Steel Threaded Ball Valves
ORFA supplies 2-piece stainless steel threaded ball valves in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
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