THROTTLE CHECK VALVE Z2FS16A8-3X/S
Manufacturer: Bosch Rexroth
Material #: R900426851
Model : Z2FS16A8-3X/S
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth Z2FS16A8-3X/S (R900426851) is a high-performance industrial hydraulic valve designed for reliable flow throttling to a set value. This particular model features a sandwich plate design, which is suitable for limiting the flow of one or two actuator ports. It incorporates two symmetrically arranged throttle check valves that limit flows via adjustable throttle spools in one direction while permitting free return flow in the opposite direction.
The Z2FS16A8-3X/S valve operates by directing hydraulic fluid through channel A to actuator A, with the throttle spool being adjustable via an internal hexagon spindle. This adjustment affects the throttling point, allowing precise control over fluid flow. The pressure within the system and a spring force maintain the throttle spool in its position during operation.
This model is particularly useful for adjusting actuator velocity as it can be installed between the directional valve and the subplate. It offers either supply or discharge throttling depending on whether it is version S or S2. The Z2FS16A8-3X/S comes with an NFPA T.. R D size CETOP D porting pattern and adheres to ISO standards for connection diagrams.
It has a maximum operating pressure of 315 bar and can handle maximum flow rates up to 80 l/min, making it suitable for a variety of demanding applications where precise fluid control is necessary. The valve's compact design allows easy integration into various hydraulic systems without significant modifications.
With its robust construction and NBR seals, this Bosch Rexroth throttle check valve ensures compatibility with hydraulic fluids such as HL, HLP, HLPD, HVLP, HVLPD, and HFC. The mechanical actuation via spindle with hexagon socket provides users with tactile feedback for accurate flow adjustments whether in meter-in or meter-out throttling configurations.
$1,253.00 USD
More are expected on April 23, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 23, 2025 when ordered in
This product is eligible for factory repair.
Size 16, A1 → A2 or A2 → A1, mechanically actuated
Industrial hydraulic valve in a high performance range. Reliable throttling of the flow to setting value.
Unpacked Weight: 4.22 kg
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
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
|
➀ |
component side |
|
➁ |
plate side |
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves (via check valve with closed throttle)
Δp-qV characteristic curves (constant throttle position)
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"
|
➀ |
component side |
|
➁ |
plate side |
Supply throttling "S"
Version "A"
Dimensions in mm
Dimensions in mm
|
1 |
Name plate |
|
2 |
Adjustment type "8“ Spindle for changing the flow cross-section (internal hexagon SW6) Left rotation = higher flow Right rotation = lower flow |
|
3 |
Through holes for valve mounting |
|
4 |
Identical seal rings for connection A, B, P, T |
|
5 |
Identical seal rings for ports X, Y, L |
|
6 |
Locking pin (included in the scope of delivery) |
|
7 |
Hexagon SW19, tightening torque MA see table |
|
8 |
Porting pattern according to ISO 4401-07-07-0-05 |
|
9.1 |
Plug screw with version "B" |
|
9.2 |
Plug screw with version "A" |
|
Version “Corrosion resistance” |
L1 |
L2 |
L3 |
L4 |
L5 |
L6 |
Pos. 7 MA in Nm ±10 % |
|
mm |
mm |
mm |
mm |
mm |
mm |
Nm |
|
| "no code" | 224 | 248 | 224 | 248 | 246 | 294 | 25 |
| „J3“ | 227 | 251 | 227 | 251 | 252 | 300 | 33 |
Valve mounting screws (separate order)
metric4 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.
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