N/en 5.10.001.01

1/08

Our policy is one of continued research and development. We therefore reserve the right to amend,

without notice, the specifications given in this document.

Heavy Duty Non-Return Valves

S/520, C/520 Series

In-Line, Non-Return Valves

G 1/8 to G 1 or 1/8 to 1 NPT

Technical data

Medium:

Compressed air, filtered, lubricated

and non-lubricated

Operation:

Non-return valve

Mounting:

Line mounted

Port sizes:

G 1/8

S/520

1/8 NPT C/520

G 1/4

S/521

1/4 NPT C/521

G 3/8

S/532

3/8 NPT C/532

G 1/2

S/522

1/2 NPT C/522

G 3/4

S/523

3/4 NPT C/523

G 1

S/524

1 NPT

C/524

Operating pressure:

0,3 - 16 bar

Operating temperature:

-20°C to +80°C

*Consult our Technical Service for use below +2˚C

For high temperature applications (150˚C Max) TS, TC/520

Series version should be ordered

Materials:

Brass body, nitrile rubber seals, aluminium valve

Note: FKM Seals for high temperature version

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Ordering information

To order, quote model number from table

overleaf, e.g. S/521 for the G 1/4 model

Alternative Models

T50 Series In-line push-in non-return valves,

see page 5.10.002

T55 and 56 Series In-line threaded Aluminium

non-return, see page 5.10.007

2

1

Permit free flow of air in one direction only

Simple, reliable design

High operating pressure