Bermad WW-770-U Large Metal Hydraulic Flow Control Valve (AS5081/WaterMark)

The Bermad WW-770-U is a heavy-duty, diaphragm-actuated hydraulic control valve engineered to limit and regulate flow at a pre-set maximum rate, regardless of upstream pressure or downstream demand fluctuations. Designed for large-scale waterworks, municipal systems, and industrial pipelines, the 770-U ensures stable system performance by prioritizing mainline protection and preventing subsystem overdraw, pump overload, and system surges.

This valve features a double-chamber body, enabling moderated response and increased control precision. A hydraulic flow sensor installed upstream provides accurate flow limitation with no electronics or moving parts, making it exceptionally reliable in remote or critical installations.

The WW-770-U incorporates a full-bore, obstruction-free flow path, a cavitation-resistant stainless steel seat, and a V-port throttling plug for excellent low-flow stability. Its rugged construction and versatile configuration options—such as Y-pattern or angle body—make it a perfect solution for complex hydraulic flow management challenges.

APPLICATIONS

• Limiting consumer over-demand in distribution networks
• Prioritizing flow in mainlines over sub-zones
• Controlled pipeline filling to prevent surges
• Protecting pumps from overload and cavitation
• Flow regulation in municipal and industrial systems
  

FEATURES

• Hydraulic Flow Limiting Control
  – Maintains maximum set flow independent of pressure or demand
  – Ideal for demand regulation, prioritization, and protection
• Double-Chamber, Line-Pressure Driven
  – Moderated valve reaction with diaphragm protection
  – Operates without external power or electronics
• Upstream Hydraulic Flow Sensor
  – No moving parts or flow-straightening sections required
  – Accurate and reliable even under variable conditions
• Full-Bore Y or Angle Body
  – Obstruction-free flow path with minimal pressure loss
  – “Semi-straight” design reduces turbulence
• Stainless Steel Raised Seat
  – Cavitation-resistant for long service life
• V-Port Throttling Plug
  – Provides enhanced stability at low flow rates
• Service-Friendly Design
  – In-line maintenance without valve removal
  – Modular build supports accessory upgrades