Repairable Drip and Tracer Steam Traps Series 711/721
The Series 711/721 Unibody Plus disc trap is designed for light load applications such as steam tracing, steam line drip, and turbine drain. These traps are fully renewable in- line, energy effi cient and easy to check.
The 711 is a simple straightway body. The 721 is a straightway body and has an integral wye strainer and blowoff valve. Both bodies accept the same renewal capsules without removing the bodies from the line. The standard capsule performs best when applied in service up to 450 psig. The HP capsule has been designed for 150-650 psig service to handle low load superheat service conditions.
Applicable Codes and Standards
Pressure rating 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 Specifi cation - Trap shall be inline renewable ‘zero steam loss’ disc-type thermodynamic trap with low carbon (0.15% max.) Chrome Moly body in ASME SA-182 Gr.
Specifi cations Ratings
711HP/721HP only Design
Operating Back pressure to 80% of inlet, psia 600 psig, 750°F 4 to 450 psig/750°F 650 psig, 750°F 150 to 650 psig/750°F
L tech note:
“Don’t throw away that steam trap! Many of our steam traps can be repaired in line with a simple plug & play repair kit.
Ask us and we can select the correct repair kit for your traps.”