Valve Selection Scheme: Shut-off Valves
Feature
From bottom to top:Modular system
From bottom to top:Long-stroke valves for viscous products or products with large particles
From top to bottom:Modular system
From top to bottom:With optimized maintenance, radial sealing
From top to bottom:Long-stroke valves for viscous products or products with large particles
Type
From bottom to top:Single-seat valve, type N
From bottom to top:Single-seat long-stroke valve,
type N_V
From top to bottom:Single-seat valve, type U
From top to bottom:Single-seat valve, type U_R
From top to bottom:Single-seat long-stroke valve,
type U_V
Technical Data Type N, N_V & U, U_V, U_R
Type N
Recommended flow direction:From bottom to top
Material in contact with the product:1.4404 / AISI 316 L
Material not in contact with the product:1.4301 / AISI 304
Seal material in contact with the product:EPDM, FKM, HNBR
Ambient temperature:0 to 45 °C
Air supply pressure:6 bar (87 psi)
Product pressure:5 bar (73 psi)
Surface in contact with the product:DN, OD, Ra ≤ 0.8 µm, IPS, Ra ≤ 1.2 µm
External housing surface:Matte blasted
Control and feedback system:T.VIS® control top
Actuator type:Pneumatic actuator air / spring
Connection fittings:Welding end
Identification:Adhesive ID tag
Valve seat version:Clamped or welded seat ring
Certificates:EHEDG, 3A, CE
Type N_V (longstroke)
Air supply pressure:4.8 bar (70 psi)
Product pressure:DN 65 – DN 80 OD 2 ½" – OD 3" 10 bar (145 psi) DN 100 & OD4"5.2 bar (75 psi)
Surface in contact with the product:Ra ≤ 0.8 µm
Valve seat version:Clamped or welded seat ring
Type U
Recommended flow direction:From top to bottom
Air supply pressure:6 bar (87 psi)
Product pressure:5 bar (73 psi)
Surface in contact with the product:DN, OD, Ra ≤ 0.8 µm, IPS, Ra ≤ 1.2 µm
Valve seat version:Welded seat ring
Certificates:3A, CE
Type U_R (radial)
Air supply pressure:6 bar (87 psi)
Product pressure:5 bar (73 psi)
Surface in contact with the product:Ra ≤ 0.8 µm
Valve seat version:Clamped or welded seat ring
Type U_V (longstroke)
Air supply pressure:4.8 bar (70 psi)
Product pressure:DN 80OD 3"5 bar (73 psi)DN 100 & OD 4"5.6 bar (81 psi)
Surface in contact with the product:Ra ≤ 0.8 µm