638 series Motorized Ball Valve - NA Market

The 638 series high flow 2-way motorized ball valves are perfect for shutoff and isolation in hydronic heating or cooling applications. Bubble-tight sealing, high differential pressure closeoff and significant Cv flow coefficients make the 638 series ideal for application in large-scale hydronic and geothermal systems. The valve body has dual Posi-Stop™ union connections for installation and service efficiency. The 3-wire floating control fail-in-place actuator includes auxiliary contacts, a convenient integral manual override feature and a user- friendly position indicator.

See Revit Content Instruction Guide pdf at www.calefii.com for code 638 series motorized ball valve.

Specification

638 series
Two-way motorized ball valve for hydronic and geothermal systems. NPT female, sweat and press union connection sizes 3/4” to 2”. Full port type ball valve. Brass body. Chrome plated brass ball. Control stem seal with double peroxide-cured EPDM o-ring seal. PTFE ball seal with peroxide-cured EPDM o-ring seal for compensation of mechanical slack. Peroxide-cured EPDM o-ring
Posi-Stop™ union seals. Water and 50% max. glycol solutions. Maximum working pressure 230 psi (16 bar). Maximum differential pressure 150 psi (10 bar) (from 3/4” to 1 1/4”), 75 psi (5 bar ) (from 1 1/2”-2”). Actuator power 24 V AC, 6 VA; with auxiliary microswitch, auxiliary microswitch contact rating 6 A at 24 VAC; dynamic torque 133 lb-in (15 N·m.) Stroke time 50 seconds (90° rotation). Protection class NEMA 4 (IP 65). Electric supply cable length 32 inches (0.8 m). Ambient conditions for valve with actuator: medium working temperature range 14 degrees F to 230 degrees F (-10 degrees C to 110 degrees C); ambient temperature: operation 14 degrees F to 230 degrees F (-10 degrees C to 110 degrees C)

See Revit Content Instruction Guide pdf at www.calefii.com for code 638 series motorized ball valve.