Samson 3756, Mounting And Operating Instructions

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3-4 EB 3756 EN
Design and principle of operation
Booster valve with threaded connection, K
VS
4.3, actuated on one side
Switching function 3/2-way function (closed 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 SIL 2) , TÜV 3)
Design Poppet valve with diaphragm actuator, soft seated, with return spring
Material Body Aluminum, powder coated, gray beige RAL 1019 or stainless steel 1.4404
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)
CNOMO interface 1.4 to 10 bar 4)
Type 3963 Solenoid
Valve (as spare part)
1.4 to 6 bar
Max. operating pressure 10.0 bar
Ambient temperature 5) –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)
SIL according to IEC 61508
3)
Emergency release or locking of compressed air supply
4)
The permissible control pressure with the CNOMO interface depends on the pilot valve used.
5)
The maximum permissible ambient temperature depends on the permissible ambient temperature of the compo-
nents, type of protection and temperature class.