Yarway Series 711/721 Steam Traps

Yarway Series 711/721 Steam Traps

Yarway™ 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 efficient 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.

Any questions?

Jani Collan
Key Account Manager
Mob. 040 702 8711


Pekka Immonen
Key Account Manager
Mob. 045 168 8355


Design 600 psig, 750°F
Operating 4 to 450 psig/750°F
711HP/721HP only:  
Design 650 psig, 750°F
Operating 150 to 650 psig/750°F
Back pressure to 80% of inlet, psia  
Body Chrome Moly, 0.15% max C
ASMF SA-182 Gr. F-11
Seat Gasket Clad Non-Asbestos
Bonnet Stainless Steel
ASTM A-582 Type 416
Disc Stainless Steel HT
Nameplate Stainless Steel
Retaining Ring Stainless Steel 17-7 PH
Seat Stainless Steel HT
Screen Stainless Steel 0.020 perf.
Cap Gasket Monel®
Blowdown Seat 416 Stainless Steel
Retaining Ring 17-7 PH Stainless Steel
Blowdown Body 416 Stainless Steel
O-ring Silicone
Blowdown Valve 416 Stainless Steel
Strainer Cap 416 Stainless Steel
Plug 3/8 NPT Carbon Steel A-105
Blank Strainer Cap Stainless Steel

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