BERMAD Irrigation Solenoids 2-Way Solenoid Valve Servo-Assisted Diaphragm Actuated Burkert Model 281 This is a diaphragm actuated, servo-assisted pilot operated 2-Way solenoid valve. It is available in two versions: ■ Normally Closed (Model: 5281A) ■ Normally Open (Model: 0281B) High flow rates (low head loss) Normally Open or Closed versions Technical Data Model 5281A Normally Closed Standard materials: Body: Brass Elastomers: NBR Enclosure: Molded epoxy Internals: Stainless Steel Model 0281B Normally open Ports: 1/2”, 3/4” NPT Temperature: Nominal ambient: 0.5 to 55˚C; 33 to 131˚F(1) Maximum fluid: 0 to 90˚C; 32 to 194˚F Hydraulic data: Port Size Flow Factor Enclosure type: One-piece molded epoxy. General purpose: IP 65 with DIN, cable plug Max. ambient temperature is detemined under continuously energized conditions, and with max. fluid temperature. 5281A AC coils can be replaced with AC or DC coils; DC coils can be replaced only with other DC coils. 0281B coils are not replaceable. A minimal pressure differential of 0.5 bar (7.5 psi) is required for complete opening. [email protected] • www.bermad.com The information herein is subject to change without notice. BERMAD shall not be held liable for PCSAEBR-281 05 any errors. All rights reserved. © Copyright by BERMAD.