DZR brass automatic balancing valve Diameters from DN015 - 1/2" to DN065 - 2 1/2" Threaded union F/F ends (ISO 7/1 Rp) Wide range of flows available (see technical sheet) Available on following versions: ● Fig. 9900V, with plugged threaded drains (¼" ISO 7/1Rp) (allow later mounting of test points) ● Fig. 9905V, with test points PN25 (Max 25bar up to 100°C, max 20bar at 130°C) Working conditions: ● Water: 0°C to +130°C below 0°C only for water with added antifreezing fluids over 100°C only for water with added anti-boiling fluids (Glycolic-ethylene and glycolic-propylene mix up to 50%) ● Flows from 0,02l/s to 0,20l/s for DN15 and DN20LF ● Flows from 0,13l/s to 0,95l/s for DN15HF, DN20 and DN25 ● Flows from 0,31l/s to 2,60l/s for DN32, DN40 and DN50 ● Flows from 1,6l/s to 6,6l/s for DN50HF and DN65 ● Working ∆P depending on selected cartridge
DZR brass automatic balancing valve Diameters from DN015 - 1/2" to DN025 - 1" Threaded union F/F ends (ISO 7/1 Rp) Wide range of flows available (see technical sheet) PN25 (Max 25bar up to 100°C, max 20bar at 130°C) Working conditions: ● Water: 0°C to +130°C below 0°C only for water with added antifreezing fluids over 100°C only for water with added anti-boiling fluids (Glycolic-ethylene and glycolic-propylene mix up to 50%) ● Flows from 0,02l/s to 0,20l/s for DN15 and DN20LF ● Flows from 0,13l/s to 0,95l/s for DN15HF, DN20 and DN25 ● Working ∆P depending on selected cartridge
VIR dynamic balancing valves keep the flow constant at a preset value. Balancing is made automatically, without any need for external tuning, even after eventual modifications in the system's layout.In the 9900P, 9900V and 9920 series valves the regulation is obtained by means of a cartridge specifically designed for each flow. The valves are specifically designed for an easy positioning of the cartridge after an initial flushing of the system or should it be necessary to change the cartridge with a new one more suited for a different flow. FBB, 9655 and 9700 series valves can be preset within specific working ranges.
Test points (optional) allow to verify that valve is actually working within its true differential pressure range.
