Two-way on-off low voltage valves consist of an actuator and valve assembly for controlling the flow of hot water.
∙ Application Hydronic Control
∙ Dimensions (in.) 4 3/8 in. high x 3 1/2 in. wide x 2 3/8 in. deep
∙ Dimensions (mm) 111 mm high x 89 mm wide x 60 mm deep
∙ Comments Use this valve in closed loop hydronic systems that do not contain dissolved oxygen in system water, such as fresh water from frequent source of makeup water. Valve designed for cycling (not constantly powered on) applications.
∙ Frequency 60 Hz
∙ Approvals, Underwriters Laboratories Inc.CSA C/US: File 1322
∙ Operating Humidity Range (% RH) 5 to 95% relative humidity, non-condensing.
∙ Voltage 24 Vac; Power Consumption--7.2 VA
∙ Timing Nominal Open--15 sec
∙ Ambient Temperature Range (F) 125 F Maximum
∙ Ambient Temperature Range (C) 52 C Maximum
∙ Connection Type Sweat
∙ Body Pattern Two-way, Straight-through
∙ Pipe Size (inch) 3/4 in.
∙ Pipe Size (DN) DN20
∙ Current Draw 0.32A
∙ Fluid Temperature (C)10 C to 93 C
∙ Fluid Temperature (F) 50 F to 200 F
∙ Maximum Differential Pressure Ratings (Close-off) (psi)20 psi
∙ Maximum Differential Pressure Ratings (Close-off) (kPa)138 kPa
∙ Electrical Connections (in.) screw terminal block
∙ Electrical Connections (mm) screw terminal block
∙ Capacity (Cv) 3.5 Cv
∙ Capacity (Kv)3 Kv
∙ Valve Action Spring return to close
∙ Valve Type Zone Valve
∙ Materials (Body) Brass
∙ Materials (Seat) Brass
∙ Materials (Stem) Stainless Steel
∙ End Switch Rating 50 VA pilot duty @ 24 V; 4.4 A running with 26.4 A inrush @ 120 V
∙ Actuation Two position
∙ De-energized Position Normally Closed
∙ Auxiliary End Switch N.O. SPST
∙ Static Pressure Rating (psi) 300 psi
∙ Static Pressure Rating (kPa) 2068 kPa
∙ Materials (Plug/Ball/Disc) Buna-N (NBR) Rubber Ball
∙ Materials (Packing) EPDM rubber
∙ Manual Opener Yes