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Solenoid valves 551-553 ASCO

3 / 2-5 / 2, 1/4 "-1/2", NAMUR, for pressure difference 0 / 2-10 bar

Features:

  • Solenoid valves comply with EU directives
  • 551 valves (single-coil) comply with TÜV-approved IEC 61508 safety standard level SIL4 and AK7
  • AISI 316L housing, threaded parts and NAMUR base plate
  • The same valve can be used as a 3/2 NC or 5/2 acting control for double acting and single acting actuators
  • Valves are protected against liquids and dust (environmental protected execution)
  • The valves can be used at a pressure difference of 0 if compressed air is also connected

Fluids (*)

Air, inert gases, filtered

The pressure differencial

2 – 10 bar [1 bar = 100 kPa]

Flow rate (Qv, 6 bar)

1/4 = 700 l / min (ANR)

1/2 = 3000 l / min

Temperature range (TS)

551: -40… +80 °C

553: -40… +60 °C

Seals (*)

VMQ (silikon) + PUR (polyurethaan)

MATERIALS IN CONTACT WITH THE FLUID:
(*) Check the suitability of the materials

Body AISI 316L
Internal parts  stainless steel, POM
Core tube  Stainless steel
Core and plugnut Stainless steel
Core spring  Stainless steel
Seat  Stainless steel
Shading coil Silver

Sales information

Wermundsen OÜ
Mustamäe tee 55
EE-10620 Tallinn, Estonia
Tel: (+372) 601 4202
wermundsen@wermundsen.ee

Product images

Manufacturer's homepage

http://www.asconumatics.eu

Additional information

PDF icon namur_551-553_aisi_316l.pdf

Size

Orifice

Flow factor Kv

Operating Pressure differencial (bar)

Power level

Prefix optional solenoids

Basic catalogue number

min. (2)

Maxim. (PS)

NEMA 7&9

ATEX/CENELEC

IP65

air (*)

EEx d

EEx em

EEx m

EEx i

EEx n

(❖)

(mm)

(m3 / h)

(L / min.)

~/=

~/=

EF (1)

NF

NK

IN

PV

IS

ZN

SC

Solenoid air pilot operated - spring return (monostable)

1/4

1/4

1/4

1/4

1/2

1/2

1/2

1/2

6

6

6

6

13

13

13

13

0,60

0,60

0,60

0,60

3,15

3,15

3,15

3,15

10

10

10

10

52,5

52,5

52,5

52,5

0/2

0/2

0/2

0/2

0/2

0/2

0/2

0/2

10

10

10

10

10

10

10

10

BP

BP

LP

LP

BP

BP

LP

LP

–

•

–

♦

–

•

–

♦

•

–

•

–

•

–

•

–

•

–

–

–

•

–

–

–

•

–

•

–

•

–

•

–

•

–

♦

–

•

–

♦

–

–

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

♦

–

•

–

•

–

•

–

•

–

❖ 551A409 (1)

❖ 551G409 (1)

❖ 551A309 (1)

❖ 551G309 (1)

❖ 553A409

❖ 553G409

❖ 553A309

❖ 553G309

Solenoid air pilot operated and return (bistable)

1/4

1/4

1/4

1/4

1/2

1/2

1/2

1/2

6

6

6

6

13

13

13

13

0,60

0,60

0,60

0,60

3,15

3,15

3,15

3,15

10

10

10

10

52,5

52,5

52,5

52,5

0/2

0/2

0/2

0/2

0/2

0/2

0/2

0/2

10

10

10

10

10

10

10

10

BP

BP

LP

LP

BP

BP

LP

LP

–

•

–

♦

–

•

–

♦

•

–

•

–

•

–

•

–

•

–

–

–

•

–

–

–

•

–

•

–

•

–

•

–

•

–

♦

–

•

–

♦

–

–

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

♦

–

•

–

•

–

•

–

•

–

❖ 551A410

❖ 551G410

❖ 551A310

❖ 551G310

❖ 553A410

❖ 553G410

❖ 553A310

❖ 553G310

Thread: ❖ select G: ISO G (228/1)
select 8: NPT ANSI 1.20.3
• • available
♦ available only for DC

(1) Certified IEC 61508, level SIL4: add jlelli appendix SL
(2) to 0-pressure difference only by adding external control pressure

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