Norgren 200 Series Nugget Spool Valves - Manual (Page 19)

Nugget 200 Spool Valves
Littleton, CO USA Phone: 303-794-2611 www.norgren.com VAL-10-19
Warning
When a solenoid or air operator is used as a return
for a manual or mechanical operator, the pilot
pressure applied to the return operator must not
exceed 40 psig (2.8 bar). Pilot pressures greater
than 40 psig for a solenoid or air return will cause
structural damage to the manual or mechanical
operator and can also result in injury to the user. If
the available pilot pressure exceeds 40 psig, an
external pilot supply only must be used and a
restrictor, part number 54872-02, must be installed
in the pilot port of the return operator to reduce the
return force to an acceptable level. Pilot pressure to
the restrictor must not exceed 150 psig
(10.3 bar).
Air Pilot Operating Specifications
Inlet Pressure Range:
10" Hg vacuum to 150 psig (10.3 bar)
Temperature Range (Ambient/Inlet):
-20° to 160°F* (-29° to 71°C)
Operator Pilot Pressures:
Maximum Pilot Pressure: 150 psig (10.3 bar)
Minimum Pilot Pressure at 150 psig (10.3 bar) main valve inlet pressures
are given in the following table:
* With the dew point of supply air less than air temperature below 35°F (2°C)
Minimum Pilot Pressures
Spring
Operator Return Nondetent Detented Centered
psig (bar) psig (bar) psig (bar)
Large Air Large Air 15 (1.0) 25 (1.7) 45 (3.1)
Large Air † Small Air 35 (2.4) – –
Small Air Small Air 25 (1.7) – –
Large Air Spring 35 (2.4) – –
Low PressureAir†† Spring 4 (.27) – –
Small Air Spring 65 (4.5) – –
Air Bleed Air Bleed 15 (1.0) 25 (1.7) –
Air Bleed Spring 35 (2.4) – –
† Pressure applied simultaneously to both operators. The piston area of
the KA2 operator is approximately twice that of the KA1 operator.
†† Pressure applied to port B of KA6 operator (port A open). A minimum
vacuum of 6.1 inches Hg (KS1 return) applied to A (port B open) will
also operate the valve. The KA6 operator can also be used as a
differential pressure operator with or without return spring. The
differential pressure required to shift the valve without return spring is
less than 1 psig (2" Hg). To reduce the possibility of internal
contamination, it is suggested that a filter/breather be installed in
the port.
.81
(21)
1/8 27 PTF
.33
(8) 9/16" HEX
1/8 27 PTF
54872 - 02
Order Number
Average Flow Factors in Cv‡ (l/min)
Flow Path
Port Port
Port 1 to 2 2 to 3
Valve Size 1 to 4 4 to 5
3-Port, Inline 1/4" 1.6 (1700) 1.7 (1800)
3/8" 1.6 (1700) 1.7 (1800)
5-Port, Inline 1/4" 1.6 (1700) 1.7 (1800)
3/8" 1.6 (1700) 1.7 (1800)
1/2" 1.6 (1700) 1.7 (1800)
5-Port, Stacking 1/4" 1.8 (1900) 1.4 (1450)
3/8" 1.8 (1900) 1.4 (1450)
‡ Flow Rating determined in accordance with NFPA/T3.21.3, Pneumatic
fluid power – Flow test procedure and reporting method – For fixed orifice
components.