The GEMU 514 pneumatically operated 2/2 way angle seat globe valve has a low maintenance aluminium piston actuator. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring fitted in front of the gland packing protects the seal against contamination and damage.

  • Substantially reduced installation dimensions when using the body with male threads which can be removed using union nuts
  • Suitable for high working temperatures and pressures
  • Control medium connection can be rotated through 360°
  • Various valve body connections: threaded sockets, threaded spigots, butt weld spigots
  • Good flow capability due to angle seat design
  • Extensive range of accessories
  • Special versions for temperatures up to 280°C
  • Versions with bellows available
  • Special connections and materials upon request


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Type 514
Nominal Size ½ , ¾, 1, 1¼, 1½, 2, 2½, 3in (15, 20, 25, 32, 40, 50, 65, 80) mm
Body Configuration 2/2-way body
Connection Butt Weld Spigots ASME BPE Butt Weld Spigots DIN Butt Weld Spigots DIN 11850, Series 1 Butt Weld Spigots DIN 11850, Series 2 Butt Weld Spigots DIN 11850, Series 3 Butt Weld Spigots EN ISO 1127 Butt Weld Spigots SMS 3008 Threaded Sockets NPT Threaded Spigots DIN ISO 228
Valve Body Material 1.4408 Cast stainless steel 1.4435 (ASTM A 351 CF3M) Investment casting (Material equivalency 316L) Rg 5 Cast bronze
Seat Seal PTFE
Control Function Double acting Normally closed Normally open
Actuator Size
Actuator 0 piston Ø 50 mm (Flow under the plug) Actuator 1 piston Ø 70 mm (Flow under the plug) Actuator 2 piston Ø 120 mm (Flow under the plug) Actuator 3 piston Ø 50 mm (Flow over the plug) Actuator 4 piston Ø 70 mm (Flow over the plug) Actuator 5 piston Ø 100 mm (Flow under the plug)
Max. Ambient Temperature 60 ºC

Working Medium

Working Medium Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and seal materials.
Max. Perm. Temperature of Working Medium 180 ºC
Max. Permissible Viscosity 600 mm²/s

Control Medium

Control Medium Inert Gases
Max. Control Pressure Actuators 0, 1, 3, 4: 10 barActuators 2 and 5: 8 bar
Max. Perm. Temperature of Control Medium 80 ºC
Filling Volume Actuator 2: 0.625 NI Actuator 5: 0.248 NI Actuators 0 and 3: 0.05 NI Actuators 1 and 4: 0.125 NI