User manual HONEYWELL DR300

[. . . ] DR300 Pressure regulator Product specification sheet Application Pressure regulators of this type protect downstream installations against excessive supply pressure. Pressure regulators are used when the capacity of direct controlled pressure reducing valves are insufficient. [. . . ] When the system is then put into operation, the water flows in and opens the diaphragm valve. The outlet pressure is diverted via the link pipework to the pilot valve, which then closes. If the pilot valve is closed, the pressure in the chamber above the mem-brane rises. The membrane surface area is larger than the valve surface area and therefore the diaphragm valve closes. When water is drawn from the outlet, the outlet pressure falls, which in turn causes the pilot valve to open. As soon as the opening of the pilot valve becomes greater than the cross sectional area of the opening in the fine regulation valve, the pressure in the chamber above the diaphragm falls and the inlet pressure opens the diaphragm valve. In this way the pilot valve regulates the control pressure so that the diaphragm valve opens just the required amount needed to maintain the outlet at constant pressure. A = Flange PN 16, ISO 7005-2, EN 1092-2 DR300-. . . B = Flange PN 25, ISO 7005-2, EN 1092-2 Connection size Connection size Weight Dimensions DN approx. kg mm L H h 50 14 230 235 83 40 43 65 15 292 294 93 40 43 80 24 310 400 100 90 103 100 39 350 433 110 160 167 150 82 480 558 143 350 407 200 159 600 650 173 480 676 250 247 730 823 205 970 1160 300 407 850 944 230 1400 1600 350 512 980 990 260 1900 1600 400 824 1100 1250 290 2500 3300 450 947 1200 1250 310 3150 3300 Flow rate (Qmax) in m3/h - V=5. 5 m/s kvs-value Accessories 5 0 bar RV283P Check valve 15 16 Grey cast iron housing, powder coated inside and outside. [. . . ] Description 1 Replacement pilot valve Set of seals Dimension Part No. DN 50 - DN 450 CX-PR DN 50 DN 65 DN 80 DN 100 DN 150 DN 200 DN 250 DN 300 DN 350 DN 400 DN 450 0903750 0903751 0903752 0903753 0903754 0903755 0903756 0903757 0903758 0903759 0903760 M07M-A16 2 2 2 2 3 Pressure gauge Ranges 0 - 16 bar Automation and Control Solutions Honeywell GmbH Hardhofweg D-74821 Mosbach Phone: (49) 6261 810 Fax: (49) 6261 81309 http://europe. hbc. honeywell. com www. honeywell. com Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z. A. La Pièce 16, Switzerland by its Authorised Representative Honeywell GmbH EN0H-1028GE23 R0909 Subject to change without notice © 2009 Honeywell GmbH [. . . ]