Asco E290B047NC Valve

VALVES
2/2 E290
NC
pressure operated bronze or stainless steel body threaded ports, 3/8 to 2 1/2
Series
1
NO 2
FEATURES • • • •
High flow due to angled seat design Anti-waterhammer design (fluid entry under the disc)
Vacuum operation up to 10-2 mbar Wide range of piston-type operators (32 - 50- 63 - 90 -125 mm dia.) rotatable
through 360°, for maximum performance at different minimum pilot pressures
• High performance, maintenance-free stuffing box
• The valves satisfy Pressure Equipment Directive 2014/68/EU, category 1 (DN > 25) or article 4.3 (DN ≤ 25)
• The valves in conformity with IEC 61508 Standard (2010 route 2H version) certified with integrity levels: SIL 2 for HFT = 0
GENERAL
Differential pressure Maximum allowable pressure Ambient temperature range
Maximum viscosity Pilot fluid Max. pilot pressure Min. pilot pressure Pilot fluid temperature
Response time
See «SPECIFICATIONS» [1 bar =100 kPa] 16 bar -10°C to +60°C 600 cSt (mm2/s)
Filtered air or water (1) 10 bar See below and following page -10°C to +60°C
See page 7 (www.asco.com)
fluids ()
temperature range
disc seal ()
DN ≤ 50: air and gas groups 1 & 2
DN 65: air and gas group 2 all DN: water, oil, liquids groups 1 & 2 and steam
- 10°C to + 184°C
PTFE
1
2
MATERIALS IN CONTACT WITH FLUID
() Ensure that the compatibility of the fluids in contact with the materials is verified
Bronze body Stainless steel body Valve body Bronze
AISI 316L Stuffing box housing Brass
AISI 316L Stem Stainless steel Stainless steel Disc Brass Stainless steel
Stuffing box packing
PTFE chevrons
PTFE chevrons Wiper seal FPM FPM Disc seal PTFE PTFE Valve body seal PTFE
PTFE
NC function, entry under the disc, 32 and 50 mm operators
OTHER MATERIALS
1
Operator Glass fibre filled PA Optical position indicator
PA 12, supplied standard on valves with 63, 90 and 125 mm operators
2
For dia. 32, 50, 63, 90 and 125 mm operators: At service fluid temperatures inside the valve body above
100°C, it is prohibited to pilot the valve with water.
(1)
NC function, entry under the disc, 63, 90 and 125 mm operators
00049GB-2017/R01 Availability, design and specifications are subject to change without notice. All rights reserved.
SPECIFICATIONS piping (ISO 6708) pipe size
DN
(G*)
flow coefficient Kv (m3/h) (l/min)
pilot pressure (bar) min.
operating pressure differential (bar) min.
max.
NC - Normally closed, entry under the disc 3/8
10
1/2
15
3/4
1
1 1/4
20
25
32
2,8 4,1
47 68
4,9
82
6,5
108
9,4
157
12,8
213
16,5
275
27
450
29
483
air, inert gas, aggressive fluids
max.
water, oil, liquids, aggressive liquids ()
() (≤184°C)
(mm)
16 12 16 16 6 10 16 12 6 10 16 6 12 6 12 3 7 16 16
16 12 16 16 6 10 16 12 6 10 16 6 12 6 12 3 7 16 16
10 10 10 10 6 10 10 10 6 10 10 6 10 6 10 3 7 10 10
32 32 50 63 32 50 63 63 50 63 90 63 90 63 90 63 90 125 125
()
4 4 4 2,5 4
10 10 10 10 10
0 0 0 0 0
4
10
0
2,5 4
10 10
0 0
4
10
0
2,5
10
0
4
10
0
2,5
10
0
4 2,5
10 10
0 0
catalogue number
operator diameter steam
bronze
stainless steel
E290A384 E290B002 E290A385 E290B005 E290B004 E290A386 E290B010 E290B011 E290B008
E290B009 E290A016 E290A017 E290A014 E290A015 E290A642 E290A641
E290A791 E290A792 E290A393 E290B045 E290A793 E290A394 E290B048 E290B047 E290A395
E290B053 E290B054 E290B051 E290B052 E290A059 E290A060 E290A057 E290A058 E290A646
E290A645
(1)
All leaflets are available on: www.asco.com Pressure Operated Valves (2/2) - 15