PRA0.S08 Valve Series

SAE Cartridge - 350 bar
Direct acting - Spool Type


A screw-in, cartridge style, direct acting, poppet type, hydraulic
pressure reducing and relieving valve with internal spring chamber
When the pressure at port (1) is below the valve setting, the valve
allows the flow to pass bidirectionally from (1) to (2).
When the pressure at port (1) exceeds the valve setting, the spool
shifts to restrict the flow at port (2), relieving or reducing the pres-
sure at port (1) depending on the flow direction.
A further pressure increase in port (1) causes the spool to shift
against the spring so that the flow is relieved to tank (3).
The system is self-regulated and stable thanks to an appropriate
negative feedback.
The spring chamber is constantly drained to tank.

Technical Features
All external surfaces are zinc plated and corrosion-proof.
All valve parts are made of high strength steel. The spool is hard-
ened and ground and the cage is super-finished to guarantee mini-
mal wear and to extent service life.
Adjustment screw cannot be backed out of the valve.
The pressure can be set by an adjustment screw.
Industry common cavity.

Performance Details

Tecnichal Data

Максимальное рабочее давление 350 bar
Максимальный поток 20 l/min
Максимальные внутренние потери 100 cc/min to 80% of nominal set point
Температура -30°C to 110°C
Жидкости Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt
Ориентация no restrictions
Момент затяжки 45-50 Nm
Набор уплотнений SK.035
Масса 0.108 kg

NOTE: The performance chart illustrates flow handling capacity at various settings. P/Q curves are recorded at TOil = 40°C
and 46 cSt

Ordering Code

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РазработаноStudio I.T.C.