Threaded Check Valves Series RK, RB ... - Parker Hannifin

Hydraulic Controls Division. Kaarst, Germany. Threaded Check ... unrestricted. Fluid. Hydraulic oil in accordance with DIN 51524/51525. Viscosity permitted.
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Threaded Check Valves Series RK, RB

Catalogue HY11-3500/UK

Characteristics / Ordering Code The check valves are designed to go into simple, threaded cavities. The connection is O-ring sealed on the 118° shoulder in the mounting cavity.

Type RK

Type RB

Technical data Series design with pipe thread Code Flow Operating pressure Opening pressure Thread (DIN ISO 228/1) Tightening torque* ±20% Weigh Mounting position Fluid Viscosity permitted Temperatures

[l/min] [bar] [bar] [Nm] [g]

[cSt]/[mm²/s] [°C]

RK0 RK1 RK2 RK3 RB1 10 20 50 80 20 700 700 700 500 700 0.15 0.18 0.2 0.25 0.15 G1/8A G1/4A G3/8A G1/2A G1/4A 10 15 20 40 15 5 5 15 15 5 unrestricted Hydraulic oil in accordance with DIN 51524/51525 4...1500 ; opt. 10...500 viscosity recommended Ambient and oil -40...+80, observe viscosity range.

RB2 50 700 0.07 G3/8A 20 15

RB3 80 500 0.17 G1/2A 40 20

* In case of strong vibration, it is recommended to secure the mounting threads.

Ordering code

R Check valve, screwable Code K B

Mounting direction

Mounting direction in the blocked direction in open flow direction

Size

Code Flow [l/min] Thread 0* 10 G1/8A 1 20 G1/4A 2 50 G3/8A 3 80 G1/2A * only series RK available

RK-RB_UK.INDD RH

6-5

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

6

Threaded Check Valves Series RK, RB

Catalogue HY11-3500/UK

Characteristics ∆p/Q perfomance curves Oil viscosity during measurement 50mm²/s

6

Mounting direction Type RK

Type RB

Screwed in, in the blocked direction

Screwed in, in the open flow direction

Mounting tool Type RK

Type RK0 RK1 RK2 RK3

D2 8.6 11.5 15 18.8

a 2 2.5 2 4

d3 1.5 2 2.5 3.5

RK-RB_UK.INDD RH

6-6

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

Dimensions

Threaded Check Valves Series RK, RB

Type RK

Type RB

Catalogue HY11-3500/UK

Type Thread L RK0 G1/8A 7.2 RK1 G1/4A 9 RK2 G3/8A 11 RK3 G1/2A 13

l1 d d1 4 8.6 1.8 4.5 11.5 2.4 6 15 3.2 7.5 18.5 4

d2 1.6 2.2 3 3.8

h 1.3 1.5 2.5 3

d.c. 6.8 8.8-0.1 11 14.2-0.1

O-ring 6x1 9x1 11x1.5 14x1.5

Type Thread L RB1 G1/4A 9.8 RB2 G3/8A 11.5 RB3 G1/2A 13.15

l1 5 7.0 7.5

d 11.6 15 18.5

d1 2 2.8 3.2

h 1.3 2 2.5

ww 5 6 8

O-ring 9x1 11x1.5 14x1.5

6 Mounting cavity • for internal line channels

• for connecting in combination with tube fitting

* Required depth depending on type of screw plug, connecting plate, etc. used. Type RK0 RK1 and RB1 RK2 and RB2 RK3 and RB3 1)

2)

Thread G1/8 G1/4 G3/8 G1/2

D 8.7 11.8 15.25 19

D1 5 8 9 12

t 16 22 24.5 29

t12) 13.7 19 21.5 25.5

x1) 2.3 3 3 3.5

Type Thread D RK0 G1/8 8.7 RK1 and RB1 G1/4 11.8 RK2 and RB2 G3/8 15.25 RK3 and RB3 G1/2 19

D1 5 8 9 12

t t12) x1) 12.3 10 2.3 14 11 3 17 14 3 22 18.5 3.5

a1 9.5 11 13 16

d2 5 6 8 12

Thread runout x must be maintained. It may be smaller, but not larger (requirement for a perfect seal using the O-ring). Fully cut-out thread

RK-RB_UK.INDD RH

6-7

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany

Threaded Check Valves Series RK, RB

Catalogue HY11-3500/UK

Notes

6

RK-RB_UK.INDD RH

6-8

Parker Hannifin GmbH & Co. KG Hydraulic Controls Division Kaarst, Germany