DIRECTIONAL VALVES
EV16-S34 Vented Spool-Type Logic Element
DESCRIPTION
A spool-type, screw-in, cartridge-style, hydraulic directional element, with multi-
function potential when used with other directional, pressure, or flow control devices.
OPERATION
The EV16-S34 is a spring-biased blocking valve which will shift to allow full flow from
1
to 2 only when 3 is vented to create a pressure drop across the internal orifice
which exceeds the pressure value of the selected bias spring force.
EV16-S34 is a vent-to-open directional valve. It requires a tall cap when specified with
bias springs from 6,2 to 16,5 bar (90 to 240 psi). The 240 psi spring requires an extra
tall cap.
NOTE: Orifice discs should not be used with this valve.
FEATURES
• Multiple function/application potential.
• Smooth shift transition.
• Low pressure drop.
• Industry common cavity.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 420 bar (6090 psi)
Flow: See Performance Chart
Internal Leakage: 164 cc/minute (10 cu. in./minute) max. at 207 bar (3000 psi)
Temperature: -40 to 100°C (-40 to 212° F) with standard Buna seals;
-26 to 204°C (-15 to 400° F) with Fluorocarbon seals;
-54 to 104°C (-65 to 225° F) with Polyurethane seals.
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC16-S3; See page 9.116.1
Cavity Tool: CT16-S3xx; See page 8.600.1
Seal Kit: SK16-S3x-MM; See page 8.650.1
SYMBOLS
PERFORMANCE
(Cartridge Only)
4.522.1
5.5/80
4.1/60
38
10
76
20
FLOW l
p
m/
gp
m
PRESSURE DROP bar/psi
114
30
151
40
189
50
2.8/40
1.4/20
1 to 2 or 2 to 1 (fully open)
32 cSt/150 sus oil at 40æC
HYDRAFORCE
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®
USASI:
ISO:
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.27 kg. (0.60 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Standard Ported Body: Weight:
1.50 kg. (3.3 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.016.1.
DIMENSIONS
MATERIALS
TO ORDER
EV16-S34
4.522.2
Option
None
(Blank)
Tall Cap T
EV16-S34__ - __ __ __ - __ - __ __
Porting
Cartridge Only 0
SAE 16 w/SAE 6 Vent Port 16T
Bias Spring (Crack)
10 0.7 bar (10 psi)
20 1.4 bar (20 psi)
40 2.8 bar (40 psi)
70 4.8 bar (70 psi)
‡
90 6.2 bar (90 psi)
‡
110 7.6 bar (110 psi)
‡
160 11.0 bar (160 psi)
‡
240 16.5 bar (240 psi)
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane
‡ T Tall Cap Option required for 6.2 -
16.5 bar (90 - 240 psi) bias springs.
‘T’ Cap (required) for
90, 110, 160 psi springs
‘T’ Cap (required)
for 240 psi springs
2.74
69.5
®
HYDRAFORCE
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®
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