
Siemens Building Technology VMP42.09(2) Valve
The Siemens VMP42.09(2) is a high-precision 1/2" NPT terminal unit valve engineered for the demanding hydronic requirements of fan coil units, induction units, and small reheat coils. This versatile globe valve features a unique convertible design; although it is shipped as a 2-way valve, removing the bypass port cap easily converts it into a 3-way mixing valve for flexible field integration. With a 0.29 Cv flow coefficient and an ANSI Class 250 rating, this valve provides exceptional control for low-flow applications in secondary hydronic loops. The construction utilizes a durable bronze body paired with a stainless steel stem and plug to resist corrosion and ensure long-term reliability in water or glycol solutions (up to 50%). A double O-ring packing design prevents leaks, while the 50:1 rangeability allows for accurate modulation in tight spaces.
- Convertible Configuration: One part number handles both 2-way and 3-way mixing applications, reducing truck stock requirements for contractors.
- Direct Actuator Mounting: Designed for seamless integration with Siemens actuators, requiring no tools for fast assembly during installation.
- Manual Positioning: Includes a protective plastic cap that allows for manual positioning up to 80% of the stroke before the actuator is powered.
- High Temperature Performance: Rated for medium temperatures ranging from 41°F to 230°F, making it suitable for both chilled and hot water systems.
Can this valve be used for diverting service in a 3-way setup?
No, for 3-way applications, the Siemens VMP series is strictly designed as a mixing valve. Direct the flow through ports A and B to exit via the common AB port as indicated by the flow arrows on the bronze casting.
What is the maximum differential pressure for this valve?
The VMP42.09(2) is rated for a maximum recommended differential pressure of 58 psi for modulating service to prevent cavitation and ensure stable control.
Is an adapter required to connect the actuator?
This valve is part of the VE VMP electronic assembly series, which features a direct-connection design that eliminates the need for separate linkages or specialized tools.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $151.94
-65%$151.94
$53.18Siemens Building Technology VMP42.09(2) Valve
The Siemens VMP42.09(2) is a high-precision 1/2" NPT terminal unit valve engineered for the demanding hydronic requirements of fan coil units, induction units, and small reheat coils. This versatile globe valve features a unique convertible design; although it is shipped as a 2-way valve, removing the bypass port cap easily converts it into a 3-way mixing valve for flexible field integration. With a 0.29 Cv flow coefficient and an ANSI Class 250 rating, this valve provides exceptional control for low-flow applications in secondary hydronic loops. The construction utilizes a durable bronze body paired with a stainless steel stem and plug to resist corrosion and ensure long-term reliability in water or glycol solutions (up to 50%). A double O-ring packing design prevents leaks, while the 50:1 rangeability allows for accurate modulation in tight spaces.
- Convertible Configuration: One part number handles both 2-way and 3-way mixing applications, reducing truck stock requirements for contractors.
- Direct Actuator Mounting: Designed for seamless integration with Siemens actuators, requiring no tools for fast assembly during installation.
- Manual Positioning: Includes a protective plastic cap that allows for manual positioning up to 80% of the stroke before the actuator is powered.
- High Temperature Performance: Rated for medium temperatures ranging from 41°F to 230°F, making it suitable for both chilled and hot water systems.
Can this valve be used for diverting service in a 3-way setup?
No, for 3-way applications, the Siemens VMP series is strictly designed as a mixing valve. Direct the flow through ports A and B to exit via the common AB port as indicated by the flow arrows on the bronze casting.
What is the maximum differential pressure for this valve?
The VMP42.09(2) is rated for a maximum recommended differential pressure of 58 psi for modulating service to prevent cavitation and ensure stable control.
Is an adapter required to connect the actuator?
This valve is part of the VE VMP electronic assembly series, which features a direct-connection design that eliminates the need for separate linkages or specialized tools.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens VMP42.09(2) is a high-precision 1/2" NPT terminal unit valve engineered for the demanding hydronic requirements of fan coil units, induction units, and small reheat coils. This versatile globe valve features a unique convertible design; although it is shipped as a 2-way valve, removing the bypass port cap easily converts it into a 3-way mixing valve for flexible field integration. With a 0.29 Cv flow coefficient and an ANSI Class 250 rating, this valve provides exceptional control for low-flow applications in secondary hydronic loops. The construction utilizes a durable bronze body paired with a stainless steel stem and plug to resist corrosion and ensure long-term reliability in water or glycol solutions (up to 50%). A double O-ring packing design prevents leaks, while the 50:1 rangeability allows for accurate modulation in tight spaces.
- Convertible Configuration: One part number handles both 2-way and 3-way mixing applications, reducing truck stock requirements for contractors.
- Direct Actuator Mounting: Designed for seamless integration with Siemens actuators, requiring no tools for fast assembly during installation.
- Manual Positioning: Includes a protective plastic cap that allows for manual positioning up to 80% of the stroke before the actuator is powered.
- High Temperature Performance: Rated for medium temperatures ranging from 41°F to 230°F, making it suitable for both chilled and hot water systems.
Can this valve be used for diverting service in a 3-way setup?
No, for 3-way applications, the Siemens VMP series is strictly designed as a mixing valve. Direct the flow through ports A and B to exit via the common AB port as indicated by the flow arrows on the bronze casting.
What is the maximum differential pressure for this valve?
The VMP42.09(2) is rated for a maximum recommended differential pressure of 58 psi for modulating service to prevent cavitation and ensure stable control.
Is an adapter required to connect the actuator?
This valve is part of the VE VMP electronic assembly series, which features a direct-connection design that eliminates the need for separate linkages or specialized tools.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












