The Series 751/761 is available in two body designs and with three Filled Thermal Elements (FTEs). The Series 761 is an in-line body with an integral wye strainer and blowdown valve. The Series 751 is an in-line body only. The FTEs to 300 psi are the -5 for drip tracing and light process; the -40 for tracing. The -HP is for applications to 600 psi. The FTEs are available in factory set and assembled renewal kits.

All internals are energy efficient. The -5 and -HP internals are slightly subcooled operating near steam temperature. The -40 internals operate 35°F to 45°F subcooled. The -HP is recommended for optimum service life limited to 450 psig.

Applicable Codes and Standards:
Pressure ratings per ANSI/FCI-69-1 Performance testing per ANSI/ASME PTC-39.1 End connections per ANSI B1.20.1 for threaded ends, per ANSI B16.11 for socket-welding ends.

How to Specify and Order:
Typical Specification – Traps shall be thermostatic rated to 600 psi and actuated by a FTE stainless steel. The body shall be low carbon (0.15 max c) chrome-moly steel with threaded (socket-welding) end connections.

Ordering:
Specify trap pipe size, series number, FTE rating, and the type of end connections desired (threaded or socket-welding). The renewal capsule consists of a factorycalibrated FTE cage assembly, seat and bonnet, with seat gasket. Order by specifying: Renewal capsule for Series 751/761 trap.