GENERAL CATALOGUE API

Accessories with integrated function Slow starters

Main features

Adjustment screw

CH

Type

Description

Symbol

L3

D2

Slow starters. In nickel-plated brass.

V61

L2

L1

D1

Dimensions

Code

Item

Symbol

D1

D2

L1

L2

L3

CH

Weight (g)

G1/4”

G1/4”

6,7

17

63,9

20

99

024475

V61 00 14

024476

V61 00 38

G3/8”

G3/8”

9,2

21

69,4

20

130

024477

V61 00 12

G1/2”

G1/2”

10,5

24,5

72,4

25

180

Technical data

Type

V61

Size

1/4"

3/8"

1/2"

Fluid

Compressed air

Pressure range (P1)

3 ÷ 10 bar

Full open

2/3 of P1

Temperature range

-20°C ÷ +80°C

Parallel threads

UNI - ISO 228 / 1 (BSP)

Flow at 6 bar with ΔP 1 bar

1.040 Nl/min

1.900 Nl/min

2.570 Nl/min

P1

The slow starter allows the system to be gradually pressurised, protecting any actuators in the line from the so-called "water hammer" caused by immediate pressurisation of the previously unloaded system. Slowly opening, as the user setting through the adjustment screw, this component progressively introduces pressure into the circuit up to the desired pressure P1, within the indicated operating range (3 ÷ 10 bar), allowing the actuators to reach the operating position gradually and without suffering any sudden shocks. The filling speed of the circuit is determined by the rotation of the adjustment needle: turning clockwise will result in increasingly slower filling.

10

Without slow starter

8

6

P = 2/3(P1)

4

With V61 slow starter

Pressure (bar)

2

0

1

2

3

4

5

6

7

8

9

10 11

Time (s)

4 - ACCESSORIES

Standard materials

Type

V61

Body

Nickel-plated brass

Spring

Stainless Steel AISI 302

Ring

Nickel-plated brass

Seals

NBR - Polyurethane (PU)

Washer

Nylon (PA6)

4.129.10