Caleffi 535351HA PresCal Pressure Reducing Valve 3/4" NPT with Gauge ASSE 1003

The Caleffi 535351HA is a pre-adjustable pressure reducing valve designed for residential and commercial plumbing applications. This PresCal 535H series valve features a dial indicator with direct readout allowing easy pressure pre-adjustment, making it ideal for regulating municipal or well water pressure to safe, optimal levels for domestic water systems.

Key Features:

• Low lead dezincification resistant "Ecobrass" body for durability and compliance
• Unique noise reducing pressure balanced cartridge for quiet operation
• Dial indicator with direct readout for easy monitoring and adjustment
• Replaceable cartridge design for convenient maintenance
• Integral stainless steel filter for debris protection
• Adjustment locking screw to prevent tampering
• Low friction and anti-scale moving parts for long service life
• UV outdoor protective cover included for non-freezing outdoor installations

Technical Specifications:

• Connection: 3/4" Female NPT (FNPT) with union connections
• Max working pressure: 300 psi (20 bar)
• Max working temperature: 180°F (80°C)
• Pressure setting range: 15 - 90 psi (1 - 6 bar)
• Factory setting: 45 psi (3 bar)
• Flow capacity: 5.6 GPM

Certified to ASSE 1003, CSA B356, NSF61, NSF372, Low Lead Laws and listed by ICC-ES. Meets codes IPC, IRC and UPC for use in accordance with U.S. and Canadian plumbing codes. This valve protects appliances, water filters, washing machines, dishwashers, and other fixtures from damage caused by excessive water pressure or pressure spikes.