211 / 266
194
The company reserves the right to vary models and dimensions without notice.
These products are designed for industrial applications and are not suitable for sale to the general public.
AUTOMATIC VALVES BSP
Automatic Valves BSP
6
NORTH AMERICAN FITTINGS & FLOW CONTROL VALVE CATALOG
>
Release 8.6
Nickel-Plated Brass Pressure-Relief, Quick-
Exhaust and Check Valves
BSP/Metric Series SCS, VNR, VSO, VSC and VMR
Shuttle Valve “OR Gate”: SCS
Check Valves: VNR
Quick-Exhaust Valves: VSO - VSC
Pressure-Relief Valves: VMR
Thread Type: Metric (M5), BSP (G1/8, G1/4, G3/8, G1/2, G3/4)
GENERAL DATA
Valve group
automatic valves
Construction
Mod. SCS, Series VNR, Series VSO and Series VSC: poppet-type
Mod. VMR: diaphragm type
Materials
Series SCS: Aluminum body - brass bushings - NBR seals - Delrin PTFE poppet
Series VNR: brass body - NBR seals - stainless steel spring
Series VSO: Nickel-plated brass body - NBR seals
Series VSC: brass body - Desmopan (polyurethane) seal
Mod. VMR: Nickel-plated brass body - zinc-plated steel spring - NBR seals
Mounting
in any position
Ports
according to the different models (see tables)
Operating temperature Mod. SCS, Series VNR, Series VSO and Series VSC: 0°C - 80°C (with dry air -20°C), 32°F - 175°F
(dry air necessary down to -4° F)
Mod. VMR: -5°C - 50°C (23°F to 125°F) (with the dew point of the fluid 2°C lower at the min. working temperature)
Fluid
filtered air, without lubrication. If lubricated air is used, it is recommended to use ISO VG32 oil. Once applied the lubrication should
never be interrupted.
Automatic valves are defined as those
valves which change their state simply
as a result of compressed air being
present or absent at their inlets.
The shuttle valve “OR” gate Mod. SCS
- 668-06 enables two signals coming
alternately from two different points to
be channelled towards the same point.
The unidirectional valves Series VNR
allow operation at low pressures both
when there is a free flow and during
retention.
Quick exhaust valves Series VSC and
VSO are commonly used to increase
the speed of cylinders or for rapid
depressurization of tanks containing
compressed air.
The adjustable valves Mod. VMR 1/8-
B10 allow to maintain tank/capacity at a
constant pressure value and thus enable
a quick exhaust in the atmosphere even
in case of an internal overpressure.
»»
Mod. SCS: channelling of two
signals coming alternately
from two different points
towards the same point
»»
Series VNR: low
operating pressures
»»
Series VSC - VSO:
able to increase the
speed of cylinders
»»
Series VSC - VSO:
depressurization of tanks
containing compressed air
»»
Mod. VMR: able to maintain
pressure constant at a set
value which allows the
overpressure to exhaust