Description
The Caleffi 535651HA is a pre-adjustable PresCal pressure reducing valve engineered for residential and commercial plumbing applications. This high-quality valve helps regulate incoming municipal water pressure to a safe, consistent level — protecting your home’s fixtures, appliances, and piping from high-pressure damage while improving system reliability and performance.
Key Features
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Reliable Pressure Reduction: Reduces variable supply pressure to a stable, adjustable downstream setting (15–90 psi), improving comfort and system performance.
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Integrated Pressure Gauge: Built-in gauge makes it easy to monitor outlet pressure and verify settings at a glance.
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Low-Lead Brass Construction: Dezincification-resistant Ecobrass body ensures long-lasting durability and code compliance with low-lead water regulations.
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High-Flow, Noise-Balanced Design: Engineered with a pressure-balanced, high-flow seat and low-friction moving parts for smooth operation and reduced noise.
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Service-Friendly Cartridge & Filter: Field-serviceable removable cartridge and integral stainless-steel mesh filter simplify maintenance and help protect against debris.
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Adjustment Locking Screw: Prevents accidental changes to pressure settings after installation.
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UV Protective Cover: Helps shield the valve from sunlight when installed in exposed environments.






