PICV
One Device, Three Functions
Control valve with integrated adjustable flow limiter and automatic pressure regulator to help simplify installation and commissioning.
Straightforward & Convenient
Siemens PICV valves include an integrated differential pressure regulator that maintains constant pressure across the internal control valve and consistent volumetric flow, regardless of pressure fluctuations. This helps support optimal comfort under varying operating conditions while maintaining appropriate return temperatures.
As a result, HVAC equipment such as pumps can operate more efficiently, helping reduce maintenance and repair costs while lowering heating and cooling expenses. The modular actuator design also simplifies installation across the product range, while delivering reliable, precise control over time.
Improve Comfort & Efficiency
Unlike conventional control valves, Siemens PICVs automatically adjust to system pressure fluctuations through their built-in differential pressure regulator. This helps maintain constant flow, improve heat transfer through the coils, and maximize Delta T.
The result is stronger energy efficiency and cost savings by helping prevent over-supply or under-supply of heating or cooling energy. More accurate temperature control also improves occupant comfort.
Achieve Your Design Intent with Siemens PICV
Enjoy the freedom to choose a better solution with a comprehensive portfolio of 2-way Pressure Independent Control Valves (PICVs) from 1/2 inch to 6 inches, all backed by a 5-year warranty.
Pressure independent control valves improve system performance and help optimize delta-T through reliable valve control. Siemens PICVs combine three functions into a single device and maintain full stroke throughout operation.
This helps reduce or eliminate the need to hunt for the right actuator setting, resulting in better control. On-site commissioning is also simplified with max flow presetting and auto balancing.
PICV: “Give us a flow and we will give you a valve”
Simple Selection: With very little information, you can match an actuator to a valve body and minimize downtime. No CV calculations or added design considerations are necessary.
Balancing: If your facility adds circuits because of an expansion, the flow control of existing circuits remains intact, helping eliminate the need to re-balance the system.
Energy Savings: Improve savings through balanced load under varying conditions, helping eliminate overflow and reduce pumping costs.
Advantages of the Siemens PICVs
Valve Actuator
- Fail-safe and fail-in-place actuators to meet most control requirements.
- Visual position indication and manual override.
Field Adjustable Flow Limiter
- Full stroke is always maintained with an independent flow limiter for high-accuracy control.
- Easily adjust maximum flow at any time when usage patterns change.
- Presetting helps prevent oversupply to the coil.
Control Valve
- A comprehensive portfolio of 1/2 inch to 6 inch PICVs.
- Threaded valves are ANSI Class 250.
- Flanged valves are available in ANSI Class 125 and 250.
- 200 and 100 PSI close-offs with ANSI Class IV leakage.
- Brass trim with stainless steel stem.
Automatic Differential Pressure Regulator
- Automatically adjusts to pressure fluctuations in the system, maintaining consistent flow at any given control setting for better comfort and lower energy consumption.
- Helps eliminate mutual hydronic interaction between branches with different operating conditions, preventing over- or under-supply.
- Supports fast commissioning with simplified hydronic balancing.
P/T (Pressure/Temperature) Test Points
- Straightforward testing and setting of optimum differential pressure during commissioning.
- Allows simplified troubleshooting during system operation.
- Optional P/T plug set accessory kit part number 599-10079 is available for field installation on 1/2 inch to 1-1/4 inch valves when needed.
How PICVs Work
Hot or chilled water, as well as 50% water-glycol solutions in closed-loop systems, enter the valve and pass through a variable rectangular adjustable flow limiter (C). This flow limiter is connected to the ring with the dial (A), which is used for presetting the maximum volumetric flow.
The medium then flows through the temperature control valve (D) with a linear characteristic and a stroke of 5 or 6.5 mm. A powerful spring (B) helps ensure safe closing.
Before leaving the valve, the medium passes through a second throttling point (E) controlled by the built-in mechanical automatic differential pressure regulator (F).
Why Siemens PICVs?
Siemens PICVs are designed to simplify installation, improve control, and deliver reliable long-term performance across hydronic systems.
A Smaller Footprint Matters
No matter how complicated your piping network may be, Siemens pressure independent control valves are designed to fit. No extra piping is required when installing Siemens PICVs, which helps reduce material costs and minimizes potential leak points.
An Easier Delta T Solution and a 3-in-1 Valve
The Siemens pressure independent control valve is a three-in-one device. One key advantage is that the field-adjustable flow limiter is independent of valve stroke. In many PICVs, reducing flow also reduces stroke. With Siemens PICVs, full control is maintained regardless of the maximum flow setting, helping support better Delta T performance and more consistent control.
Higher Reliability
Every Siemens valve and actuator is tested right from the factory line to help ensure long-term performance. Siemens goes further with rigorous lifecycle testing of up to 100,000 full strokes and up to 1 million repositions, helping deliver higher reliability over time.
Shop Siemens PICVs Below
Check out this short video to learn more about controlling Delta T and how Siemens PICVs can help save money and conserve energy. Room temperatures stay more consistent regardless of pressure fluctuations, helping you maximize Delta T, optimize flow control, and improve overall efficiency.