April 9, 2012 – Siemens announces PICV pressure independent control valves that integrate three functions into a single device: control valve, adjustable flow limiter, and automatic pressure regulator. Siemens’ line is engineered to offer accuracy and flexibility which simplifies planning, installation and commissioning – especially for large hydronic HVAC system applications. Control accuracy enhances room comfort and the valves make a significant energy efficiency contribution by preventing over- or under-supply of heating or cooling energy.
The portfolio of PICVs from Siemens is comprised of eight different valves covering a flow range from 0.3 gpm to 37 gpm with a differential pressure operating range from 2.3 psi to 58 psi. The combination of control valve and differential pressure regulator in one valve facilitates installation and simplifies commissioning. An integrated differential pressure regulator keeps the pressure across the internal control valve constant, while also maintaining consistent volumetric flow, regardless of pressure fluctuations in the hydronic system.
This ensures a higher level of comfort under all operating conditions and keeps return temperatures optimized. Thus HVAC equipment, such as pumps, can work easier generating greater savings in maintenance and repair costs while significantly reducing heating and cooling costs. Regardless of pressure fluctuations, Siemens PICVs are designed for long-lasting performance and feature:
- ANSI Class 250 valve body
- ANSI Class IV leakage @ 45 psi (1/2 to 1-1/4 inch)
- ANSI Class III leakage @ 50 psi (1-1/2 to 2-inch)
- Linear flow characteristic
- Brass trim and stainless steel stem
- Optional P/T ports for measuring differential pressure across the valve
- Pair with modular Siemens non-spring return and spring-return electronic actuators
Siemens Infrastructure & Cities Sector, with approximately 87,000 employees worldwide, offers sustainable technologies for metropolitan areas and their infrastructures. Its offerings include complete traffic and transportation systems, intelligent logistics, efficient energy supply, environmentally compatible building technologies, modernization of the way power is transmitted and distributed, and smart consumption of electricity. The sector is comprised of the Rail Systems, Mobility and Logistics, Low and Medium Voltage, Smart Grid and Building Technologies Divisions as well as Osram Sylvania. The Siemens Building Technologies Division is the world’s market leader for safe and energy efficient buildings (“green buildings”) and infrastructures.
As a service provider, system integrator and product vendor, Building Technologies has offerings for building automation, heating, ventilation and air conditioning (HVAC), fire protection and security.