OVERVIEW

Official designation: SIEMENS VVF43.100-160 (VVF43 Series, 2-port Flanged Seat Valve)

Role/Application: High-performance 2-port seat valve for precise flow regulation in HVAC systems, suitable for water, steam, and brine in open or closed circuits.

KEY SPECS SUMMARY

Power: N/A (Mechanically actuated, requires external actuator)

Interfaces / Ports: DN100 flanged connections to ISO 7005

Indicators: N/A (Requires actuator with indicator)

Operating Temp: Minus 20 degrees C to 220 degrees C

Platform / Compatibility: Compatible with SKC series electrohydraulic actuators

Limit: PN16 pressure class, kvs value 160 cubic meters per hour

Lifecycle: Active, constructed with nodular cast iron body

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum permissible differential pressure (Delta p max) for the VVF43.100-160 valve?

A: The maximum differential pressure varies by actuator, typically 250 kPa with SKC actuators.

Wiring & Installation:

Q: What is the required stroke length of the electrohydraulic actuator for this DN100 valve?

A: The required nominal stroke length for this valve is 40 millimeters.

Troubleshooting & Compatibility:

Q: Which flow direction is preferred for optimal low-noise operation with fluids?

A: The preferred flow direction for fluids is A to AB for low noise and high kvs values.

Replacement & Upgrades:

Q: What is a common replacement path for the standard VVF43 valve requiring higher close-off pressure?

A: Consider the VVF43..K series with pressure compensation for higher differential pressure capability.