Description
Caleffi Z300637 : 3-Way Valve, 1″ Sweat, 7.5 Cv, 20 psi ΔP (Valve Only)
The Caleffi Z300637 is a Z3 3-way diverting valve body designed for use with motorized zone valves in hydronic heating and cooling systems. It provides two-position on/off control with a diverting flow pattern, allowing for efficient fluid redirection between system zones. Built with a stainless steel stem and EPDM rubber seals and paddle, this valve ensures long-term durability, leak resistance, and smooth operation under demanding conditions.
The Z300637 connects via 1″ sweat ends for a secure soldered installation and is fully compatible with Caleffi Z1 actuators. Its heavy-duty brass construction provides corrosion resistance and reliability, making it ideal for both residential and commercial hydronic applications.
Key Features
- 3-way on/off, two-position diverting valve body
- Diverting flow pattern for zone and system control
- Stainless steel stem with EPDM rubber seals and paddle
- 1″ sweat connections for soldered installation
- Compatible with Caleffi Z1 actuators
- Durable brass body for hydronic heating and cooling systems
Technical Specifications
- Valve Type: 3-Way Diverting
- Connection Type: 1″ Sweat
- Maximum Operating Pressure: 300 psi
- Maximum ΔP: 20 psi
- Cv Rating: 7.5 gpm
- Medium Temperature Range: 32–240 °F
- Body Material: Brass
Datasheets
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Caleffi Z-One Zone Valve Technical Brochure |
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Caleffi Z-One Motorized Zone Valve Installation and Commissioning Manual |
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Caleffi Z300637 Sell Sheet |
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Submittal Data |





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