Product Overview

The Y42X Pressure Reducing Stabilizing Valve is a diaphragm-operated pressure control valve designed to automatically reduce higher inlet pressure to a stable lower outlet pressure in water systems. It features excellent pressure stabilization characteristics and is widely used in building water supply, fire protection systems, and industrial water networks.

Key Features

• Precise Pressure Regulation– Maintains stable downstream pressure regardless of upstream fluctuations
• Diaphragm Actuated Design– Provides sensitive response and smooth operation
• Self-Contained Operation– Requires no external power source or control system
• Corrosion Resistance– Stainless steel trim and durable diaphragm materials
• Low Maintenance– Simple structure with few moving parts
• Quiet Operation– Special flow path design minimizes noise and vibration

Technical Specifications

Working Principle

The Y42X valve operates through a balanced diaphragm system. When the outlet pressure drops below the set value, the diaphragm moves upward under spring force, opening the valve to allow more flow. As outlet pressure increases beyond the set point, the diaphragm is pushed downward, restricting flow to maintain constant pressure. This automatic balancing action provides stable downstream pressure regardless of flow rate changes or upstream pressure variations.

Structural Features

• Diaphragm Control System– Provides direct pressure sensing and actuation
• Balanced Valve Design– Reduces the effect of pressure differentials on operation
• Adjustable Spring– Allows easy field adjustment of outlet pressure
• Stainless Steel Stem– Corrosion resistant for long service life
• Compact Design– Requires minimal installation space

Applications

• Building water supply systems (high-rise pressure zoning)
• Fire protection systems
• Industrial water distribution networks
• HVAC systems
• Irrigation systems
• Water treatment plants

Installation & Maintenance

Installation Requirements

• Install in horizontal pipelines with arrow indicating flow direction
• Provide adequate straight pipe runs (5D upstream, 10D downstream)
• Install strainer upstream to protect valve from debris
• For vertical installation, consult manufacturer (special models available)

Maintenance

• Check pressure setting quarterly
• Inspect diaphragm annually for wear or damage
• Lubricate adjustment screw threads yearly
• Flush valve body during system maintenance