Piston valve 820

hydraulically-operatedpressure-reducingright-angle

Overview
Hydraulically operated, piston-actuated control valve that reduces higher upstream pressure to a lower, constant downstream pressure regardless of fluctuating demand or varying upstream pressure.

Product identifiers
Product code: 820
Series: 800 Series
Internal ID / data-barcode: 30560
Market segments: Waterworks; Buildings & Construction

Features & Benefits

• Piston-actuated construction — rated for high-pressure service
• Line-pressure driven — independent operation without external power
• Simple design with minimal external accessories
  • Cost-efficient installation footprint
  • Accessible components for maintenance
• Built-in check function — replaces separate line-sized check valve
• In-line serviceable design — maintenance can be performed without removing the valve from the pipeline
• Double-chamber configuration
  • Moderated valve reaction for controlled operation
  • Moderated closing curve to reduce hydraulic shock
• Flexible modular design — option to add accessories or control features
• Available in Y or angle pattern with wide body — minimized pressure loss
• Semi-straight flow path — reduced turbulence
• Stainless steel raised seat — increased resistance to cavitation damage
• Obstacle-free full bore — unobstructed flow capacity
• Optional V-Port throttling plug — improved stability at low flow

Typical Applications

• National water systems — pressure reduction in transmission pipelines
• Municipal water distribution — pressure reduction in distribution mains and consumer connections

Technical specifications

• Model: 820
• Series: 800 Series
• Operation: Hydraulically operated, piston-actuated control
• Drive: Line pressure driven (independent operation)
• Design: Double-chamber option; Y or angle pattern; wide body
• Flow: Semi-straight flow; obstacle-free full bore
• Seat: Stainless steel raised seat (cavitation resistant)
• Built-in features: Integrated check function (replaces line-sized check valve)
• Maintenance: In-line serviceable
• Optional: V-Port throttling plug for stable low-flow control
• Typical use: Pressure reduction for transmission pipelines, municipal distribution and consumer connections
• Internal ID / data-barcode: 30560