Plastic Combination Air Valve (DAV-P-B-PAV)

Description

Plastic Combination Air Valve (DAV-P-B-PAV)

The DNS DAV-P-B-PAV is a high-quality combination air valve for a variety of water networks and operating conditions. It evacuates air during pipeline filling, allows efficient release of air pockets from pressurised pipes, and enables large-volume air intake in the event of network draining. Its advanced aerodynamic design, double orifice and optional surge-protection device provide excellent protection against air accumulation and prevent vacuum formation, with improved sealing in low-pressure conditions.

Features:
• Straight-flow body with large-diameter automatic orifice for higher-than-usual flow rates.
• Aerodynamic full-body kinetic shield prevents premature closing without disturbing air intake or discharge.
• Dynamic sealing prevents leakage under low-pressure conditions (0.1 bar / 1.5 psi).
• Tappable boss on the base for pressure-gauge connection, check point or test drain.
• Threaded 2″ (DN50) side outlet for Surge Protection (SP) or Inflow Prevention (IP) devices.
• Compact, reliable structure with fully corrosion-resistant internal parts for lower maintenance and longer service life.
• Designed and tested to functional and water-service standards, including vacuum pressure conditions.

General Application:
Pipelines and water networks – protection against air accumulation and vacuum formation at elevations, slope-change points and road / river crossings, and near control valves and water meters to prevent inaccurate pressure regulation.