Union Bonnet Needle Valves Type A1

Packing

• PTFE and Graphite Packings are available for all valve types.

Surface Treatment:

• Carbon Steel Valves are phosphatized by default.

Pressure Test:

• A shell test and a seat test are performed at 1.5 times the max. allowable (working) pressure acc. to EN 12266-1 - P10, P11 and P12 respectively MSS-SP61 at every standard AS-Schneider Needle Type Globe Valve.

Certification:

• Inspection certificate 3.1 acc. to EN 10 204 for valve body material and pressure test available on request. The heat resisting materials are available by default with inspection certificate 3.2!

Fugitive Emission Applications:

• For Fugitive Emission Applications AS-Schneider is providing bellows sealed valves with safety packing. Choice of Pressure class PN 100 or PN 250 - Suffix P5 or P6.
• The bellows are submitted to a 100% Helium leak test. Leak rate: 10-8 mbar l/s.
• Optional available are TA-Luft and ISO 15848 solutions. For more details please contact the factory.

Oxygen Service:

• AS-Schneider offers an option with Reinforced PTFE Packing cleaned and lubricated for Oxygen Service – Suffix F5:
• AS-Schneider Union Bonnet Needle Valve Type A1 is available with a lot of options. 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.

• The valve is designed for severe service.