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Flow control valve using non compensated throttling.
The flow is reduced in only one direction (A to A1) for STU valves
and in both
directions for STB valves, turning the wheel with locking screw
right or left.
Guarantees excellent mechanical seal with negligible leakage.
It has a galvanised steel body. The check valve tapered poppet is
in tempered
and ground steel.
Model | Max Flow | Max pressure | C | L | H | D | E | F | G | N | PN |
L/min | MPA | ||||||||||
STB-G1/4 | 12 | 40 | G1/4 | 54 | 72 | 32 | 20 | M20*1 | 5 | 7 | 40 |
STB-G3/8 | 30 | 40 | G3/8 | 62 | 80 | 32 | 25 | M25*1.5 | 9 | 7 | 40 |
STB-G1/2 | 50 | 40 | G1/2 | 73 | 92 | 45 | 30 | M20*1.5 | 9 | 9 | 40 |
STB-G3/4 | 85 | 40 | G3/4 | 84 | 100 | 45 | 40 | M35*1.5 | 10 | 11 | 40 |
STB-G1 | 150 | 32 | G1 | 102 | 122 | 45 | 45 | M40*1.5 | 12 | 15 | 32 |
Application
The throttle valves are able to produce a pressure drop between inlet and outlet. They are not pressure compensated so the regulated flow can change infunction of the pressure and of the viscosity.
Description
Throttle valve, also called check valve, is used in hydraulic
system to control the flow and cutoff of oil.
If the oil inlet and outlet of a straight through check valve are
in a axial direction, the valve may be connected directly to the
system pipe via threaded pipe fittings.
Throttle valve may be used in parallel with overflow valve, relief
valve, sequence valve, throttle valve and speed control valve and
so to form non-return overflow valve, non-return relief valve,
non-return sequence valve, non-return throttle valve, non-return
speed control valve and so on.