Throttle valves

Butterfly valves are basic vacuum system valves that limit volumetric flow and suction power without changing the vacuum level. The result is decreased leakage loss when vacuum cups are idle. This ensures sufficient vacuum for vacuum cups occupied with workpieces. This prevents the accidental depositing and dropping workpieces.

A knurled screw is used to manually adjust the limit.


A horizontal rotating air connection makes it easy to adjust the screw-in butterfly valves to the given conditions. FIPA inline butterfly valves can be installed directly in the hoses.


FIPA inline throttle check valves only allow the volumetric flow to move in one direction while simultaneously limiting it. Throttle check valves can adjust the speed of lifting cylinders, for example.


Throttle valves - screw-in type

  • Limitation of suction flow at a constant vacuum level
  • Reducing leakage at unoccupied suction cups maintains an adequate vacuum level for suction cups covered by products and thus prevents products from being dropped
  • Manual adjustment using knurled screw
  • Flexible installation using horizontal swivel air connector

Technical data

Item no.32.50032.50132.50232.50332.50432.50532.50632.50732.50832.50932.51032.511
Operating pressure [psi] -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116 -14.5 - 116
Operating temperature [°F] 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140
Weight [oz] 0.32 0.71 0.35 0.71 1.27 0.71 1.27 2.36 1.41 2.43 2.54 3.63
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+Dimensions

Item no.32.50032.50132.50232.50332.50432.50532.50632.50732.50832.50932.51032.511
RM5G1/8M5G1/8G1/4G1/8G1/4G3/8G1/4G3/8G3/8G1/2
Ø D [mm]4466688810101212
A [mm]3.583.58118111211121215
B [mm]27 - 29.534 - 40.527 - 29.534 - 40.541 - 47.534 - 40.541 - 47.546.5 - 53.541 - 47.546.5 - 53.546.5 - 53.551.5 - 59
C [mm]151517171718.518.518.520.520.523.523.5
E1 [mm]2021.52423.525.52728.5293131.53736.5
E2 [mm]6.510.57.510.51211.5131514.516.51819.5
H [mm]8108101410141914191924
L [mm]23.5 - 2630 - 36.523.5 - 2630 - 36.535 - 41.530 - 36.535 - 41.540 - 4735 - 41.540 - 4740 - 4745.5 - 51
Ø P1 [mm]101012.512.512.514.514.514.5181821.521.5
Ø P2 [mm]1014.51014.518.514.518.52218222228

"Inline" - throttle valves

  • Limitation of suction flow at a constant vacuum level
  • Reducing leakage at unoccupied suction cups maintains an adequate vacuum level for suction cups covered by products and thus prevents products from being dropped
  • Manual adjustment using knurled screw
  • Simple installation in the line tubing

Technical data

Item no.32.54032.54132.54232.54332.544
Operating pressure [psi] -14.5 - 130.5 -14.5 - 130.5 -14.5 - 130.5 -14.5 - 130.5 -14.5 - 130.5
Operating temperature [°F] 32 - 140 32 - 140 32 - 140 32 - 140 32 - 140
Weight [oz] 0.42 1.16 1.55 2.72 4.48
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+Dimensions

Item no.32.54032.54132.54232.54332.544
Ø D [mm]4681012
A [mm]37.54651.559.572
B [mm]1115182128
C [mm]29.5444853.558
D [mm]1420222632
d2 [mm]3.24.34.34.34.3

"Inline" - one-way flow control valves

  • Limitation of suction flow at a constant vacuum level
  • Reducing leakage at unoccupied suction cups maintains an adequate vacuum level for suction cups covered by products and thus prevents products from being dropped
  • Manual adjustment using knurled screw

Technical data

Item no.73.00173.004
Maximum flow rate [scfm] 1.4 3.2
Regulating range [psi] -14.5 - 0 -14.5 - 0
Operating temperature [°F] -4 - 176 -4 - 176
Weight [oz] 3.35 3.35
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+Dimensions

Item no.73.00173.004
G1G1/4G1/2
B [mm]6075
C [mm]3956
D [mm]2230