Industrial Hydraulic type Z2FRM6 Sandwich flow control valve
Cartridge 32 L/min 315 Bar 6
Features
– Sandwich plate valve
– Porting pattern to DIN 24 340 Form A, without locating pin hole
(standard)
– Porting pattern to ISO 4401 and CETOP–RP 121 H
– With 1 or 2 flow control cartridges
– Adjustment element with internal hexagon
Function and configuration
The valve type Z2FRM is a 2-way flow control valve of sandwich
plate design and type 2FRM6K is a 2-way flow control cartridge
valve. The former is used for maintaining a constant flow and is
independent of the pressure and temperature. The valve basically
consists of a housing (1) and one or two flow control cartridges
type 2FRM6K (9). The throttling of the flow from port A2/B2(A) to
portA1/B1(B) occurs at the throttle area (3). The throttle bolt (4)
is driven by the adjustment element (2). To maintain a constant
flow in port A1/B1(B) which is independent of pressure, a pressure
compensator (5) is fitted downstream of the throttle area (3). The
pressure compensator (5) is pressed against the plug (8) , via a
compression spring (7). When there is no oil flow, pressure
compensator (5) keeps in open position. If there is flow through
the valve then the pressure in port A2/B2(A) acts on the pressure
compensator (5). Then the pressure compensator (5) moves until the
forces are balanced. If the pressure in port A2/B2(A) increases,
then the pressure compensator (5) moves in the closing direction
until the forces are balanced again. Due to the continuous
compensation by the pressure compensator, a constant flow is
achieved. Free flow from port A1/B1(B) to port A2/B2 (A) is via
check valve (6).
Symbols ( ① =valve side ② = sub-plate side)
Specification
· Sandwich flow control valve Type Z2FRM6
· Flow control valve Type 2FRM6K
Technical data
| Sandwich flow control valve type Z2FRM 6 | Flow control valve type 2FRM6K |
| Mounting type | Flat mounting interface | Install position:optional |
| Connection type | Indirect connection via a subplate or block, porting pattern to DIN
24 340 form A, ISO 4401 and CETOP-RP 121 H |
| Weight | kg | 1.3 (flow control function in ports A, B or T) | 0.2 |
| 1.5 (flow control function in ports A and B) |
| Nominal pressure | bar | 315 |
| Fluid | Mineral oil,Phosphoric acid ester |
| Fluid temperature range | ℃ | -20 to +80 |
| Viscosity range | mm2/s | 10 to 800 |
| Flow range | L/min | 0.05~6; 0.25~32 |
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS
1638 or 20/18/15, ISO4406 |
| Min.pressure drawdown | bar | 18 (Flow control valve type 2FRM6K) |
| Pressure stability to ΔP=315 bar | % | ±3 (Qmax) |
Unit dimensions (Dimensions in mm)
Type Z2FRM6A... and Z2FRM 6 B...
Type Z2FRM 6 C...
· Sandwich flow control valve Type Z2FRM6
1 Name plate
2 Flow control cartridge type 2FRM6K hexagon 27A/F, MA = 50 Nm
3 Adjustment element with internal hexagon 3A/F
4 O-rings 9.25×1.78 (Ports A2, B2, P2, T2)
5 Valve fixing holes Valve fixing screws M5×** GB/T70.1-10.9
tightening torque MA = 50 Nm, the screws length accords to the
sandwich valves
6 To convert from meter-out into meter-in control for version A, B
and C, rotate the component about the "X"–"X" axis, and for version
T, convert from Port T flow control into Port P flow control.
7 Z2FRM6A2... flow control in port A
8 Z2FRM6B2...flow control in port B
· Flow control valve Type 2FRM6K
