Electric heat-traced stations prevent freezing even in extreme conditions. Thermostat regulated units are heated by self-limiting heat-tracing cable wrapped around internal pipe. Units are intended for cold weather use down to -20°F. Self-regulated with external termination guards. Thermostat activates when internal piping temperature falls below 75°F. FM, UL and CSA approved for Class I, Division 2, Groups B, C and D.Unit is fully wired at factory. Junction box and components rated for Class I, Division 2, Groups B, C and D. Requires 120 VAC single phase power supply. UV-resistant orange ABS plastic with polyethylene foam insulation. Jacket sections secured with removable stainless steel screws for easy maintenance. 10" diameter orange ABS plastic with 20 GPM flow control. 1" IPS brass stay-on ball valve. US-made with brass ball and PTFE seals. Includes 29" stainless steel pull rod and stainless steel actuating arm. Freeze-resistant with float-off dust covers and internal flow control. 1/2" IPS brass three-way self-draining stay-open ball valve. Includes 1/2" NPT port to drain water from spray heads after use. Pipes and fittings are made with Schedule 40 galvanized steel.1-1/4" NPT female top inlet. Includes ANSI-compliant identification sign. Factory tested prior to shipment ships fully assembled.