E 5.166.5/01.13
140
Pressure Sequence Valve
Poppet Type, Direct-Acting
Metric Cartridge – 350 bar
DZ5E
Up to 20 l/min
Up to 350 bar
The pressure sequence valve DZ5E is a
direct-acting, spring-loaded poppet valve
with built-in check valve. In the normal
position, the path from port 1 to port 2 is
blocked.
If the pressure exceeds the pre-set
spring tension, the piston and poppet
move together in a closed condition
to the upper limit of the poppet. If
the pressure continues to rise, the
piston unblocks the path from 1 to 2
(consumer) so that oil can ow.
This opens the connection to the
additional consumers from port 2. In the
return direction from port 2 to 1, the main
piston is pushed back by the spring into
its initial position and the poppet opens
against the corresponding spring and
allows free ow from port 2 to port 1.
The spring chamber pressure is vented
to atmosphere.
FEATURES
z To connect additional consumers once certain pressures are reached
z To connect cylinders in sequence circuits
z As a pressure relief valve if free ow is required in the opposite direction
z Excellent dynamic performance
z Excellent stability throughout ow range
z Hardened and ground valve components to ensure minimal wear and extended
service life
z Adjustable throughout ow range
z Various pressure ranges up to 350 bar
z Optional zinc-plated version available
FUNCTION
SPECIFICATIONS
Operating pressure: max. 350 bar
Nominal ow: max. 20 l/min
Pressure setting ranges: 100 / 200 / 250 / 350 bar
Sequence pressure tolerance: ± 5 bar below 100 bar,
above 100 bar ±5%
Leakage: leakage-free
(max. 5 drops
≙ 0,25 cm³/min at 350 bar)
Cracking pressure from 2→1: 0.5 bar
Media operating temperature range: min. -20 °C to max. +120 °C
Ambient temperature range: min. -20 °C to max. +120 °C
Operating uid: hydraulic oil to DIN 51524 Part 1 and 2
Viscosity range: min. 7.4 mm²/s to max. 420 mm²/s
Filtration: Class 21/19/16 according to ISO 4406 or
cleaner
MTTF
d
: 150 years (see "Conditions and
instructions for valves" in brochure 5.300)
Installation: No orientation restrictions, preferably
horizontal
Materials: Valve body: high tensile steel
Piston: hardened and
ground steel
Seals: FKM (standard)
NBR (optional, media
temperature range
-30 °C to +100 °C)
Back-up rings: PTFE
Cavity: 06020
Weight: 0.22 kg
Adjustment
device
Valve body
Spring
Spring plate
Piston
Poppet
Spring