Throttle check valve Z2FS 16

Description

• Size 16
• Component series 3X
• Maximum operating pressure 350 bar
• Maximum flow 250 l/min

Features

• Sandwich plate valve
• Porting pattern according to ISO 4401-07-07-0-05
• Flow limitation of 2 actuator ports
• Adjustment type: Spindle with hexagon socket
• Meter-in or meter-out throttling

Product description

The valve type Z2FS is a throttle check valve in sandwich plate design. It is used for the flow limitation of one or two actuator ports.

Two symmetrically arranged throttle check valves limit flows (by adjustable throttle spools) in one direction and allow free return flow in the opposite direction.

In case of supply throttling, the hydraulic fluid is directed through channel A➀ via throttling point (1) to actuator A➁. The throttle spool (2.1) can be axially adjusted via the spindle (3) for adjustment of the throttling point (1).

Simultaneously, the hydraulic fluid in channel A➀ is directed via the bore (4) to the piston side (5).

The active pressure and the spring force retain the throttle spool (2.1) in throttle position.

The hydraulic fluid return flow from actuator B➁ displaces the throttle spool (2.2) and enables the unobstructed flow as check valve. Depending on the version ("S" or "S2"), the throttling effect may occur in supply or discharge.

Flow limitation

For actuator velocity adjustment, the throttle check valve is installed between the directional valve and the subplate.

Supply throttling

Type code

Preferred types and standard units are contained in the EPS (standard price list).

Technical data

general

hydraulic

(For applications outside these values, please consult us!)

Diagrams/characteristic curves

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves (via check valve with closed throttle)

Δp-qV characteristic curves (constant throttle position)

Symbols/Circuit diagrams

Supply throttling "S"

Version "-"

Discharge throttling "S2"

Version "-"

Discharge throttling "S2"

Version "A"

Discharge throttling "S2"

Version "A"

Supply throttling "S"

Version "B"

Discharge throttling "S2"

Version "B"

Supply throttling "S"

Version "A"

Dimensions

Dimensions in mm

Dimensions in mm

Valve mounting screws (separate order)

• metric

4 hexagon socket head cap screws ISO 4762 - M10 - 10.9-flZn-240h-L

2 hexagon socket head cap screws ISO 4762 - M6 - 10.9-flZn-240h-L

• UNC

4 hexagon socket head cap screws 3/8-16 UNC

2 hexagon socket head cap screws 1/4-20 UNC

Notice:

Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve.

Downloads

Throttle check valve Data Sheet | RE27526 | 2015-01-01 | English | PDF | 309k Product Groups: Throttle valves Type Z2FS