Tri Clover Check Valve with Teflon (PTFE) Seat, New Design

Reference: SV-317
Sizes available: 1" to 10", DN40 to DN250
End connection: butt-welded, sanitary clamp, threaded or others available upon request.
Body & Disc: AISI 304 or 316L, (EN1.4301/EN1.4404)
Seat: PTFE (Teflon)
Max. working pressure: 145psi (10bar)
Cracking pressure: 0.3psi (0.02bar)
Nagtive pressure: -13psi (-0.9bar)
Temperature range: -22° F to 302 ° F (-30°C to 150°C )
Surface treatment: Ra 32μin (0.8μm) as default, Ra 16μin (0.4μm) as best.


AV-317 series tri clover check valve is a new design check valve with PTFE (Teflon) Seat. It ensures the flow in only one direction, reduce the flow loss from returning and avoids pipe-hammering. Compared to the SV-3C series, SV-317 series sanitary check valve is with all technolody improved with PTFE seated, less dead angle and small flow resistance advantages.


Body Material AISI 304 or 316L (1.4301 / 1.4404)
Other Steel Parts AISI 304
Seat Material Silicone (default)
Seat Options EPDM or Viton (FPM)
Max. Working Pressure 145psi (10bar)
Cracking Pressure 4.35psi (0.3bar) for DN25
2.9psi (0.2bar) for DN32-40
1.45psi (0.1bar) for DN50-100
Working Temperature EPDM: 14 ~ 248°F (-10 ~ 120°C) 
Silicone: -58 ~ 356°F (-50 ~ +180°C) 
Viton (FPM): -22 ~ 428°F (-30 ~ +220°C) 
Sterilization Temperature 150°C (302°F), Max. 20 min
Internal Finish Ra 16 ~ 32µin (0.4 ~ 0.8µm), Ra 32µin as default.
External Finish Ra 16 ~ 32µin (0.4 ~ 0.8µm), Ra 32µin as default.
End Connections butt-welded, sanitary tri-clamp, threaded or others upon request.


Design Features

● Vertical and horizontal design
● No dead space and crevices, small flow resistance
● Fits to sanitary stainless steel tubing
Teflon (PTFE) seated.
● Sanitary surface finish, available with Ra < 0.4µm or EP (SF1 and SF4)
● A wide selection of different end connections


Drawing 6 - Sanitary Tri Clover Check Valve with PTFE (Teflon) Seat


    Our sales team will reply within 24 hours
      End Connection
      Body Material
      Seat Material
      Your Name*
      Your Email*
      Your Phone Number
      Your Company
      Special Requirements