User manual HONEYWELL VR300

[. . . ] Special Features · · · · · · High flow capacity Light weight High control accuracy Powder coated inside and outside - Powder used is physiologically and toxicologically safe Integral control circuit and ball valves No external energy required for operation Water Range of Application Medium Operating pressure Max. [. . . ] 80 °C ture Construction The flow rate regulator comprises: · · · · · EN0H-1335GE23 R0807 · Subject to change Nominal pressure Minimum pressure Connection size PN 16 PN 25 on request 0. 7 bar DN 50 - 450 Housing with PN16 flanges per ISO7005-2, EN1092-2 Pilot valve CX-FR Control circuit with ball valves on inlet and outlet Control circuit with integral rinsable filter insert Integrated measuring orifice on the inlet Ductile iron housing, cover plate and diaphragm plate (ISO 1083), powder coated Red bronze/stainless steel regulating cone Stainless steel pressure spring and control rod Fibre-reinforced NBR diaphragm NBR and EPDM seals Stainless steel valve seat High quality synthetic material control circuits Brass compression fittings Brass pilot valve housing Stainless steel filter insert Materials · · · · · · · · · · www. honeywell. com 63 VR300 Flow rate regulator Method of Operation The flow rate regulating valve automatically regulates to a constant flow rate, irrespective of fluctuating system pressures, using a pre-calculated measuring orifice operating in conjunction with a special pilot valve. The valve opens fully if the consumption is less than the maximum calculated flow or the system itself does not deliver the required flow rate. A three-way pilot valve measures the differential pressure between the two sides of the measuring orifice and uses this to regulate the diaphragm valve. Available in sizes DN 65 to DN 100, with filter mesh sizes 100 µm or 200 µm RV283P Check valve Grey cast iron housing, powder coated inside and outside. DIN/DVGW tested in compulsory test sizes DN 65, DN 80 and DN 100 RV283P F76S-F 64 www. honeywell. com EN0H-1335GE23 R0807 · Subject to change VR300 Flow rate regulator Installation Example Installation Guidelines · · · · · · · Install shutoff valves on both sides of the pressure sustaining valves Install strainer upstream of filling valve o Protects against damage from coarse dirt Note flow direction (indicated by arrow) Ensure good access o Simplifies maintenance and inspection The calculated measuring orifice is designed to achieve a pressure drop of 0. 20 - 0. 25 bar A pressure measuring point of at least 1/2" size must be present in the inlet section A pre-calculated flow rate performance can be adjusted on the pilot valve between -10 % and +40 % of the predetermined value. Larger variations require another design of measuring orifice Install connectors for removal and refitting for maintenance Typical Applications Flow rate regulators of this type, within the limits of their specifications, are suitable for installing in water supply systems and also for commercial and industrial installations. [. . . ] The following are some typical applications: · · Performance limitation of pumps Supply network optimising system controls · Flow Diagram EN0H-1335GE23 R0807 · Subject to change www. honeywell. com 65 VR300 Flow rate regulator Spare Parts Flow rate regulator VR300, from 2002 onwards No. [. . . ]