Heves megyei aprónyomtatványok 20/B

22

PNEUMATIC VALVES

Flow data of valves

Type

Conn, port

Flow data

^m«x

Ndm3/i

<Tr

Ndm’/s

APr

bar

463/xxx

R 1/4"

24

8

0,4

464/xxx

R 3/8"

59

20

0,3

465/xxx

R 1/2"

113

37

0,5

*q

= 1/3xq

max

The table of flow data gives the pressure loss £pr (bar) too at reference pressure

Marking of connection ports of valves comply with ISO 1219:

1 mains supply port

2, 4 output ports

3, 5 exhaust ports

10,12,14 input ports

Connection ports of the valves comply with ISO R 1179 standard: M5, R 1/8", R 1/4", R 3/8", R 1/2".

Dimensions of input signal ports of the valves comply with ISO R 1179 standard: M5, R 1/8". Symbols of valves comply with ISO 1219 standard.

Symbol

Description

Explanation

3/2 valve

Normally closed

Normally open

2 4

it fr ti

5/2 valve

Shut-off valve

L-[-cvw|?

Non-return valve

Fixed throttle valve

2

Adjustable throttle valve-O-"

Non-return throttle valve

4

„OR" valve

Symbol

Actuating elements for valves

Manual and mechanical control

HI

General manual

(HI

Push button

Ml

Handle

HI

Foot pedal

C

Push button

HI

Roller

'

Roller arm with automatic return

d

Spring

Pneumatic control

With pressure increase

u

t

W

ith pressure loss

Electric control

Direct

fTvj

Indirect