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Solenoid valves 551 ASCO

3/2, 1/4 ", with one / two coils, for pressure difference 0 / 2-10 bar

Features:

  • Complies with required Euro directives
  • 551 valves (single winding) are available with TÜV-approved IEC 61508 safety standard level SIL4 and AK7
  • Threaded connection R1 / 4 ”, female thread
  • Valves are internally protected from external liquids and dust (environmental-protected construction)
  • Can be externally piloted (external air pilot supply) to convert valve to zero
    minimum operation by flipping a gasket

Fluids (*)

Air, inert gases, filtered

Pressure difference

2 – 10 bar [1 bar = 100 kPa]

Flow rate (Qv, 6 bar)

860 l / min (ANR)

Temperature range (TS)

-40… +60 °C

Seals (*)

SI (silikoon) + PUR (polyurethaan)

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

Body  Brass
Covers  Brass  

Inner parts Brass, stainless steel, POM
Core tube  Stainless steel
Shading coil Copper
Top disc  PA (nylon)
Disc holder  POM

ELECTRICAL CHARACTERISTICS :
Coil insulation class  F
Connection  Plug PG11
Electrical safety  IEC 335
Protection class  IP65

Standard voltages  

DC (=): 24 V (For other voltages and 60 Hz on request) AC (~): 24 V - 115 V - 230 V / 50 Hz

Additional options

  • With explosion protection
  • IP67 protection class
  • UL and CSA approved
  • With external control pressure

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 3_way_551_brass.pdf

Size

Orifice

Flow factor Kv

Operating pressure difference (bar)

Power level

Prefix optional solenoids

Basic model

min. (2)

Max. (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

3/2 valves

Solenoid air pilot operated - spring return (monostable)

1/4

1/4

1/4

1/4

6

6

6

6

0,75

0,75

0,75

0,75

12,5

12,5

12,5

12,5

0/2

0/2

0/2

0/2

10

10

10

10

BP

BP

LP

LP

–

•

–

♦

•

–

•

–

•

–

–

–

•

–

•

–

•

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

•

–

❖ 551A407 (1)

❖ 551G407 (1)

❖ 551A307 (1)

❖ 551G307 (1)

Solenoid air pilot operated and return (bistable)

1/4

1/4

1/4

1/4

6

6

6

6

0,75

0,75

0,75

0,75

12,5

12,5

12,5

12,5

0/2

0/2

0/2

0/2

10

10

10

10

BP

BP

LP

LP

–

•

–

♦

•

–

•

–

•

–

–

–

•

–

•

–

•

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

•

–

❖ 551A408

❖ 551G408

❖ 551A308

❖ 551G308

5/2 valves

Solenoid air pilot operated - spring return (monostable)

1/4

1/4

1/4

1/4

6

6

6

6

0,75

0,75

0,75

0,75

12,5

12,5

12,5

12,5

0/2

0/2

0/2

0/2

10

10

10

10

BP

BP

LP

LP

–

•

–

♦

•

–

•

–

•

–

–

–

•

–

•

–

•

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

•

–

❖ 551A419 (1)

❖ 551G419 (1)

❖ 551A319 (1)

❖ 551G319 (1)

Solenoid air pilot operated and return (bistable)

1/4

1/4

1/4

1/4

6

6

6

6

0,75

0,75

0,75

0,75

12,5

12,5

12,5

12,5

0/2

0/2

0/2

0/2

10

10

10

10

BP

BP

LP

LP

–

•

–

♦

•

–

•

–

•

–

–

–

•

–

•

–

•

–

♦

–

–

–

♦

–

•

–

♦

–

•

–

•

–

❖ 551A420

❖ 551G420

❖ 551A320

❖ 551G320
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