The flow divider ST1 Series is a spool valve for pressure-independent flow rate distribution in fix ratio. In reverse direction the valve becomes a flow combiner. Various flow ranges with various translations are available.
Cavity ST12230-01 (metric): M 27 x 2. Qmax = 60 l/min Pmax = 350 bar\
Cavity ST10-01: UNF 7/8-14. Qmax = 45 l/min Pmax = 350 bar
Cavity ST16-01: UNF 1 5/16-12. Qmax = 150 l/min Pmax = 350 bar
Feature
- Can be used for differential locks in drive applications
- Excellent dividing and combining accuracy
- Synchronizing flow in both operating modes
- Wide flow range down to 25% of nominal flow rating
- Compact design
- Exposed surfaces zinc-nickel plated for increased corrosion protection (1.000 h Salt spray test)
Specification
Model | ST10-01 | ST16-01 | ST12230-01 | |
---|---|---|---|---|
Operating Pressure | max. 350 bar | |||
Nominal Flow .max | 45 l/min | 150 l/min | 60 l/min | |
Inlet flow | 7.6 l/min 15.2 l/min 22.8 l/min 30.4 l/min 37.8 l/min 45.6 l/min | max. 90 l/min max. 115 l/min max. 150 l/min | 20 l/min (type 20) 60 l/min (type 60) | |
Dividing accuracy | up to 10% of inlet flow per partial flow | |||
Media operating temperature range | min. -30 °C to max. +100 °C | |||
Ambient temperature range | min. -30 °C to max. +100 °C | |||
Operating fluid | Hydraulic oil to DIN 51524 Part 1, 2 and 3 | |||
Viscosity range | min. 7.4 mm²/s to max. 420 mm²/s | |||
Filtration | Class 21/19/16 to ISO 4406 or cleaner | |||
MTTFd | 150 - 1200 years, according to DIN EN ISO 13849-1 | |||
Materials | Valve body | steel | ||
Spool / Piston | hardened and ground steel | |||
Seals | NBR (standard) FKM (optional, media temperature range -20 °C to +120 °C) | |||
Back-up rings | PTFE | |||
Cavity | 12230 metric | |||
Weight | 0.122 kg | 0.45 kg | 0.27 kg |
Function
ST10-01 and ST16-01 Type
|
The flow divider is a spring-loaded pressure compensated spool type valve. It divides a flow in two and keeps both flows constant. The division is made according to the specified ratio - from port 3 to ports 2 and 4.
As a flow combiner it combines two partial flows together – from ports 2 and 4 to port 3.
Port 1 is not used.
ST12230-01 Type
The flow divider is a spool type valve which divides a flow in two. The division is made according to the specified ratio - from port 2 to ports 1 and 3. As a flow combiner it combines two partial flows together – from ports 3 and 1 to port 2.
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