Threaded Ball Valves
A threaded ball valve screws directly onto the pipeline via internal or external threads at its ends and opens or shuts off flow with a quarter turn of a bored ball. Because it needs no flanges or bolt sets, it offers the shortest installation route on small and medium bore lines.
This group brings together threaded ball valves with brass, ductile iron and stainless steel bodies in separate subcategories. The body material is chosen according to the medium, operating temperature and pressure class of the line.
Main Applications
- Isolation points in domestic water and heating distribution lines
- Compressor outlets and compressed air distribution lines
- Boiler room, calorifier and heat exchanger connections
- Small bore branch lines in process and chemical plants
- Natural gas indoor installations and burner supply lines with suitable models
- Service valves upstream of equipment and drain points
Technical Data
| Connection | Female–female or female–male thread (depending on model) |
|---|---|
| Thread size | 1/8″ – 4″ (varies by body) |
| Pressure class | PN10 / PN16 / PN25 / PN40 / PN63 (depending on model) |
| Body material | Brass, ductile iron, stainless steel |
| Stainless body | AISI 304 / AISI 316 |
| Ball seat (stainless) | R-PTFE (15%) |
| Temperature (stainless) | −25 °C … +180 °C (depending on material) |
| Bore | Full or standard bore (depending on model) |
| Body construction | One, two or three piece |
| Operation | Lever or butterfly handle; actuator-pad types separately |
| Operating torque (2″, stainless) | 25 N·m |
| Thread type | Depending on model |
Material Options
| Part | PN25 · brass | PN40 · ductile iron | PN63 · stainless |
|---|---|---|---|
| Body | Brass (alloy code depending on model) | Ductile iron (grade depending on model) | Stainless steel AISI 304 / 316 |
| Ball | Depending on model | Depending on model | Stainless steel AISI 304 / 316 |
| Ball seat | Depending on model | Depending on model | R-PTFE (15%) |
| Stem | Depending on model | Depending on model | Stainless steel AISI 304 / 316 |
| Gland packing | Depending on model | Depending on model | PTFE |
| Handle | Depending on model | Depending on model | Stainless steel AISI 304 |
The stainless column is taken from the manufacturer part list of a two piece threaded valve. Material codes for brass and ductile iron models differ by manufacturer and are confirmed against the product datasheet at the quotation stage.
Advantages
Fast Installation
- No flanges, gaskets or bolt sets are needed.
- Connects directly to the pipe thread with a sealing compound.
Low Pressure Drop
- On full bore models the flow area is close to the pipe bore.
- In the open position the medium passes along a straight path.
Wide Material Range
- A brass body is an economical solution for water and air lines.
- A stainless body suits aggressive media and hygienic lines.
Easy Operation
- A quarter turn moves the valve from fully open to fully closed.
- The handle position shows whether the valve is open or closed.
Construction and Design Features
- In a one piece body the ball is inserted from the end; in a two piece body the end cap is screwed into the body.
- In a three piece body the centre section can be removed from the line by undoing the bolts while the end pieces stay on the pipe.
- Sealing is provided in two separate stages: at the ball and at the stem.
- On stainless models the ball seat is 15% reinforced PTFE.
- In the closed position the handle sits perpendicular to the pipe axis.
Send us the thread size, pressure class and medium; we will select the right body material together.
How to Choose?
- Identify the mediumConsider brass for water and air, stainless steel for aggressive media or hygienic lines.
- Select the pressure classChoose the PN class that covers the highest operating pressure of the line.
- Match the thread sizeChoose a valve that matches the size and type of the pipe or fitting thread.
- Decide on body constructionOn lines with frequent maintenance a three piece body allows servicing without removing the valve.
- Choose the operatorUse a butterfly handle in tight spaces, or an actuator-pad type if automation is planned.
Complementary Products
Why ORFA?
Threaded Ball Valve Types
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 →
Stainless Steel Threaded Ball Valves
Stainless steel threaded ball valves are corrosion-resistant ball valves with a stainless steel body and threaded ends.
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 →
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 →
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.
Details →
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 →Other Ball Valves
Actuator Compatible Ball Valves
Actuator compatible ball valves have a mounting pad that allows a pneumatic or electric actuator to be fitted directly. They are used in process, heating and water lines that require remote or automatic on-off control.
Details →
Flanged Ball Valves
Flanged ball valves are installed in the pipeline with flanged connections and provide tight shut-off with a quarter turn. They are preferred in medium and large diameter water, heating, oil and process lines.
Details →Get a quote for your project
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