Union Bonnet Needle Valves
Type A1
AS-Schneider Union Bonnet Needle Valve Type A1 is available with a lot of options. The valve is designed for severe service. Following design features characterize the A1 valve: External Stem Thread, Valve Stem with cold rolled threads, Non-rotating Needle and back seat design and an Integral Valve Seat.
Bore Size: 0.433" (11 mm)
Connections, materials and further options are available, please see below Ordering Information or more detailed under:
General InformationExample for a typical product acc. to the below mentioned Ordering Information:Part No.: A1B-A4PA4P-SAK
| A1 | Union Bonnet Needle Valve Type A1 |
| B | Packing: Graphite |
| - | |
| A | Inlet Connection: Butt Weld End |
| 4 | Pipe Dimension: 1/2" Pipe |
| P | Wall Thickness: Schedule 80 |
| A | Outlet Connection: Butt Weld End |
| 4 | Pipe Dimension: 1/2" Pipe |
| P | Wall Thickness: Schedule 80 |
| - | |
| S | Material: 316H |
| A | Vent Connection: Without |
| K | Operation Options: T-Handle |
* Welded connections in material 1.4903 / F91 / 1.7335 / 1.7380 require post weld heat treatment (PWHT) at around 700 - 750°C. The valve head unit must be removed prior to the heat treatment to avoid damages. See the installation, operation and maintenance manual for instructions. We recommend to order These valves with 100 mm pipe extensions (Option V - Box 15) to avoid the removal of the valve head Units.
