Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Delivery Time | 2 weeks |
| Nominal Size | NG6 (D03 / ISO 4401-03) |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Max. Operating Pressure | 315 bar (some refs 350 bar body rating) |
| Packaging Details | wooden box |
| Weight | Approx. 1.16 kg |
| Mounting Bolts | 4 × M5 (ISO 4762, Grade 10.9) |
| Supply Ability | 100 |
| Max. Flow Rate | 80 L/min |
| Certification | ISO |
| Brand Name | Rexroth |
| Place of Origin | German |
| Model Number | R900476838 Z2FS6-5-4X/2QV |
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Product Specification
| Delivery Time | 2 weeks | Nominal Size | NG6 (D03 / ISO 4401-03) |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Max. Operating Pressure | 315 bar (some refs 350 bar body rating) |
| Packaging Details | wooden box | Weight | Approx. 1.16 kg |
| Mounting Bolts | 4 × M5 (ISO 4762, Grade 10.9) | Supply Ability | 100 |
| Max. Flow Rate | 80 L/min | Certification | ISO |
| Brand Name | Rexroth | Place of Origin | German |
| Model Number | R900476838 Z2FS6-5-4X/2QV | ||
| High Light | Rexroth dual one-way throttle valve ，Rexroth hydraulic throttle valve ，German Rexroth Z2FS6 throttle valve | ||
|
Parameter Category |
Parameter |
Specification |
|---|---|---|
|
General Information |
Brand / Model |
Rexroth (Germany), Z2FS6-5-4X/2QV |
|
Order Code (Material No.) |
R900476838 |
|
|
Valve Type |
Twin Throttle Check Valve, Sandwich Plate Design |
|
|
Performance Parameters |
Nominal Size |
NG6 (D03 / ISO 4401-03) |
|
Max. Operating Pressure |
315 bar (some refs 350 bar body rating) |
|
|
Max. Flow Rate |
80 L/min |
|
|
Throttle Function |
One-way throttling in A→A₂ / B→B₂ direction, free return flow in opposite direction |
|
|
Version |
2Q = Both A & B ports throttled (Main Flow Limitation) |
|
|
Mechanical Interface |
Mounting Style |
Sandwich Plate (between directional valve and subplate) |
|
Porting Pattern |
ISO 4401-03-02-0-05 / DIN 24340 Form A |
|
|
Mounting Bolts |
4 × M5 (ISO 4762, Grade 10.9) |
|
|
Adjustment Type |
Spindle with Internal Hex & Scale + Lock Nut + Protective Cap ("5" code) |
|
|
Weight |
Approx. 1.16 kg |
|
|
Media & Environment |
Seal Material |
FKM (Viton®) — indicated by suffix V |
|
Compatible Fluids |
Mineral Oil (HL/HLP), HFC (Water Glycol), HFD (Phosphate Ester — with FKM) |
|
|
Operating Temp. Range |
-20°C to +80°C (with FKM seals) |
|
|
Fluid Cleanliness |
ISO 4406 20/18/15 or cleaner |
| Z2FS6A2-4X/S-2QXCJ |
| Z2FS6B2-4X/S-2QXCJ |
| Z2FS6-2-4X/S2-1QXCJV |
| Z2FS6A2-4X/S2-1QXCJV |
| Z2FS6B2-4X/S2-1QXCJV |
| Z2FS6-2-4X/S2-1QXCJ |
| Z2FS6A2-4X/S2-1QXCJ |
| Z2FS6B2-4X/S2-1QXCJ |
| Z2FS6-2-4X/S2-2QXCJV |
| Z2FS6A2-4X/S2-2QXCJV |
| Z2FS6B2-4X/S2-2QXCJV |
| Z2FS6-2-4X/S2-2QXCJ |
| Z2FS6A2-4X/S2-2QXCJ |
| Z2FS6B2-4X/S2-2QXCJ |
| Z2FS6A2-4X/1QJ3V/60 |
| Z2FS6A2-4X/1QJ3V |
| Z2FS6A2-4X/1QJ3/60 |
| Z2FS6A2-4X/1QJ3 |
| Z2FS6A2-4X/1QJ5V/60 |
| Z2FS6A2-4X/1QJ5V |
| Z2FS6A2-4X/1QJ5/60 |
| Z2FS6A2-4X/1QJ5 |
| Z2FS6A2-4X/1QV/60 |
| Z2FS6A2-4X/1QV |
| Z2FS6A2-4X/1Q/60 |
| Z2FS6A2-4X/1Q |
| Z2FS6A2-4X/2QJ3V/60 |
| Z2FS6A2-4X/2QJ3V |
| Z2FS6A2-4X/2QJ3/60 |
| Z2FS6A2-4X/2QJ3 |
| Z2FS6A2-4X/2QJ5V/60 |
| Z2FS6A2-4X/2QJ5V |
| Z2FS6A2-4X/2QJ5/60 |
| Z2FS6A2-4X/2QJ5 |
| Z2FS6A2-4X/2QV/60 |
| Z2FS6A2-4X/2QV |
| Z2FS6A2-4X/2Q/60 |
| Z2FS6A2-4X/2Q |
| Z2FS6A3-4X/1QJ3V/60 |
| Z2FS6A3-4X/1QJ3V |
| Z2FS6A3-4X/1QJ3/60 |
| Z2FS6A3-4X/1QJ3 |
| Z2FS6A3-4X/1QJ5V/60 |
| Z2FS6A3-4X/1QJ5V |
| Z2FS6A3-4X/1QJ5/60 |
| Z2FS6A3-4X/1QJ5 |
| Z2FS6A3-4X/1QV/60 |
| Z2FS6A3-4X/1QV |
| Z2FS6A3-4X/1Q/60 |
| Z2FS6A3-4X/1Q |
| Z2FS6A3-4X/2QJ3V/60 |
| Z2FS6A3-4X/2QJ3V |
| Z2FS6A3-4X/2QJ3/60 |
| Z2FS6A3-4X/2QJ3 |
| Z2FS6A3-4X/2QJ5V/60 |
| Z2FS6A3-4X/2QJ5V |
| Z2FS6A3-4X/2QJ5/60 |
| Z2FS6A3-4X/2QJ5 |
| Z2FS6A3-4X/2QV/60 |
| Z2FS6A3-4X/2QV |
| Z2FS6A3-4X/2Q/60 |
| Z2FS6A3-4X/2Q |
| Z2FS6A5-4X/1QJ3V/60 |
| Z2FS6A5-4X/1QJ3V |
| Z2FS6A5-4X/1QJ3/60 |
| Z2FS6A5-4X/1QJ3 |
| Z2FS6A5-4X/1QJ5V/60 |
| Z2FS6A5-4X/1QJ5V |
| Z2FS6A5-4X/1QJ5/60 |
| Z2FS6A5-4X/1QJ5 |
| Z2FS6A5-4X/1QV/60 |
| Z2FS6A5-4X/1QV |
| Z2FS6A5-4X/1Q/60 |
| Z2FS6A5-4X/1Q |
| Z2FS6A5-4X/2QJ3V/60 |
Q1: What does "2QV" mean in the model number?
A: "2Q" means both ports A and B are equipped with throttle/check combinations for main flow limitation (used between directional valve and subplate). "V" indicates FKM (Viton®) seals, making this version suitable for HFC water-glycol or HFD phosphate-ester fluids — unlike the standard NBR-sealed version which is for mineral oil only.
Q2: How should this sandwich valve be installed in the stack?
A: The Z2FS6 is installed directly between a directional control valve (NG6/D03) and its mounting subplate or manifold. The throttle side (A₁→A₂, B₁→B₂) faces the directional valve; the free-flow (check) side faces the actuator. Ensure port alignment matches ISO 4401-03 and tighten the M5 bolts with even torque (~8–10 Nm in cross pattern).
Q3: Which direction is throttled and which is free-flow?
A: Flow from the directional valve side (A₁/B₁) to the actuator side (A₂/B₂) passes through the adjustable throttle orifice. The reverse flow (A₂/B₂ → A₁/B₁) lifts the check valve seat and returns unrestricted (free flow). If you need inlet throttling vs. return throttling, mount the valve accordingly in the stack.
Q4: Why does cylinder speed seem unstable or the valve "clog"?
A: The most common cause is oil contamination blocking the tiny throttle gap — always maintain ISO 4406 20/18/15 cleanliness and use a 10 µm return-line filter. Also verify the lock nut is not over-tightened (which can shift the spindle setting) and that system pressure is sufficient — very low differential pressure across the orifice can make flow less repeatable.
Q5: Can I use this valve for pilot flow (switching time) adjustment?
A: The "2Q" version is intended for main flow limitation (actuator speed control). For pilot flow limitation (adjusting pilot-operated directional valve switching time), a "1Q" version (throttling only one pilot line) would normally be used, though a 2Q can physically work in some pilot circuits. Match the version to your application requirement.
Company Details
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
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