Mepco (Dunham Bush) D4661 Trap 340793-762 a pigtail siphon must be

a pigtail siphon must be installed to protect the Bourdon tube from direct high-temperature steam contact

Precision Modulation: Maintains consistent condensing temperature by accurately throttling the water flow rate

Precision Engineering: Exact OEM dimensions for the Copeland 998-0005-00 ensure a perfect seal without the need for additional anaerobic sealants

or "hot spots" on the exterior jacket

providing precise control for heavy-duty electrical loads

Mepco (Dunham Bush) D4661 Trap 340793-762 a pigtail siphon must beThe Mepco (Dunham Bush) D4661 is a high performance 1 2" 1E SW straight way trap engineered for reliable condensate management in low pressure and sub atmospheric steam heating systems. Designed for horizontal installation, this thermostatic radiator trap features a rugged brass construction with a union inlet to simplify field mounting on radiators, convectors, and unit heaters. It operates effectively across a broad pressure range from 25" Hg vacuum