01534GB-2021/R01
Availability, design and specications are subject to change without notice. All rights reserved.
Features and Benefits
• Robust heavy duty AISI 316L stainless steel construction ensures valve is suitable for
harsh environments
• Special design of the valve prevents external build up and is easy to clean
• All wetted parts are available for contact with food in compliance with
the EC Directive1935/2004 and FDA CFR21
• Exhaust air can be easily ducted to reduce emissions and protect the environment
• Specications are laser marked on the valve to prevent loss during high pressure washing
• Ample uid passage for optimal ow
• Adjustable actuator enables 360° access to pilot port
• Modular design provides exceptional exibility
• Anti-water hammer design and back pressure resistant
• Extensive range of actuators, options, certications and accessories
General
Differential pressure
See Specications section [1 bar =100
kPa]
Vacuum
10
-2
mbar (10
-2
Torr/mm Hg)
Maximum allowable pressure
16 bar (240 psi)
25 bar (360 psi) with P16 and HTP options
Ambient temperature range
-20°C to +70°C (-4°F to 158°F)
WSF option
-10°C to +70°C (14°F to 158°F)
HTP option
-10°C to +80°C (14°F to 176°F)
LTP option
-60°C to +65°C (-76°F to 149°F)
Nominal pressure
PN16 (32 mm actuator)
PN25 (DN32 to DN65)
PN40 (DN15 to DN25)
Maximum viscosity
800 cSt (mm
2
/s) (2.700 SSU)
Pilot fluid
Filtered air or water
Maximum pilot pressure
10 bar (150 psi) / bistable function: 8 bar (120 psi)
Minimum pilot pressure
See Specications section
Response time
See dedicated pilot catalog pages
Fluids ()
Temperature range (TS)
(1)
Disc seal
()
DN10 to DN50: Air and
gas groups 1 and 2
DN 65: Air and gas group 2
All DN: Liquids groups 1 and 2 and
steam
-20°C to +140°C (-4°F to 284°F)
WSF option: -10°C to +184°C (14°F to 360°F)
LTP option: -60°C to +65°C (-76°F to 149°F)
HTP option: -10°C to +220°C (14°F to 428°F)
PTFE
(HTP: PTFE
carbon)
Materials of components in contact with fluid
()
Ensure that compatibility of materials in contact with fluids is verified.
Stainless steel
All 316L grade version
with body passivation
Body
Stainless steel AISI 316L Stainless steel AISI 316L
Stuffing box housing
Stainless steel AISI 316L Stainless steel AISI 316L
Stem
Stainless steel AISI 431 Stainless steel AISI 316L
Disc
Stainless steel AISI 316L Stainless steel AISI 316L
Disc seal
PTFE PTFE
Wiper seal
PTFE PTFE
Stuffing box packing
PTFE PTFE
Valve body seal
PTFE PTFE
Angle seat valve
Thread connection 3/8” to 2 1/2” (DN10 to DN65)
Straight seat valve
Connection Flanges PN40 (DN15 to DN25), PN 25 (DN32 to DN65)
type 11 (ISO 7005 / EN 1092-1)
ANSI Class 150 ASME B16.5
Face-to-face dimensions EN 558-1
Face de joint Type B
Other components
Actuator
Stainless steel AISI 316L
Optical position indicator
PA 12
(1)
The minimum ambient temperature of the valve is determined by the limitations of
minimum temperature indicated.
NC
ASCO™ Pneumatic Angle and Straight Seat Valves
2/2
Series
290
2-way, Pressure Operated, Stainless Steel Body and Actuator
3/8” to 2 1/2” Tapped or with anges (DIN EN 1092-1 and ANSI Class 150, DN15 to DN65)
NO
Bistable
NC function, entry under the disc,
63 mm operator
Bistable function,
63 mm operator
NC function, entry above the disc,
63 mm operator
NO function, entry under the disc,
63 mm operator
1
2
2
1
2
1
2
1
Visit our website at Emerson.com/ASCO
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