EB 3756 EN
3-5
Design and principle of operation
Booster valve with threaded connection, K
VS
4.3, actuated on one side
Switching function
3/2-way function (open in neutral position)
K
VS
1)
(direction of flow)
1.9 (4»3), 1.5 (3»4),
4.3 (3»5), 4.7 (5»3)
Safety approval
–
Design
Poppet valve with diaphragm actuator, soft seated, with return spring
Material
Body
Aluminum, powder coated, gray beige RAL 1019
Diaphragms
Chloroprene rubber (–20 to +80 °C) or silicone rubber (–45 to +80 °C)
Seals
Chloroprene rubber (–20 to +80 °C) or silicone rubber (–45 to +80 °C)
Screws
Stainless steel 1.4571
Springs
Stainless steel 1.4310
Operating medium
Instrument air (free from corrosive substances) or nitrogen, air containing oil or non-
corrosive gases
Compressed air quality
acc. to ISO 8573-1
Max. particle size and density: Class 4 · Oil content: Class 3 · Pressure dew point:
Class 3 or at least 10 K below the lowest ambient temperature to be expected
Actuation,
control pressure,
switching points
Pneumatic connection
G ¼ or ¼
NPT
1.4 to 3 bar
≤0.2 bar (switchover to neutral position),
≥1.4 bar (switchover to operating position)
Max. operating pressure
10.0 bar
Ambient temperature
2)
–20 to +80 °C
–45 to +80 °C
Connection
G ½ or ½ NPT
Approx. weight
0.58 kg
1)
The air flow rate when p
1
= 2.4 bar and p
2
= 1.0 bar is calculated using the following formula:
Q = K
VS
x 36.22 in m³/h.
2)
The maximum permissible ambient temperature depends on the permissible ambient temperature of the compo-
nents, type of protection and temperature class.
Summary of Contents for 3756
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