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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

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China R900595835 Z2FS22B8-3X/S Hydraulic valve German Rexroth one-way throttle valve
China R900595835 Z2FS22B8-3X/S Hydraulic valve German Rexroth one-way throttle valve

  1. China R900595835 Z2FS22B8-3X/S Hydraulic valve German Rexroth one-way throttle valve

R900595835 Z2FS22B8-3X/S Hydraulic valve German Rexroth one-way throttle valve

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Delivery Time 2 weeks
Certifiion ISO
Weight 9.5 kg
Cleanliness Requirement​ Minimum ISO 4406 20/18/15
Payment Terms Western Union,T/T,D/P,D/A,L/C
Packaging Details wooden box
Max. Operating Pressure​ 315 bar
Supply Ability 100
Variant​ Z2FS22B8-3X/S
Fluid Viscosity Range​ 10 to 380 mm²/s
Brand Name Rexroth
Model Number Z2FS22B8-3X/S
Place of Origin German

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  1. Product Details
  2. Company Details

Product Specification

Delivery Time 2 weeks Certifiion ISO
Weight 9.5 kg Cleanliness Requirement​ Minimum ISO 4406 20/18/15
Payment Terms Western Union,T/T,D/P,D/A,L/C Packaging Details wooden box
Max. Operating Pressure​ 315 bar Supply Ability 100
Variant​ Z2FS22B8-3X/S Fluid Viscosity Range​ 10 to 380 mm²/s
Brand Name Rexroth Model Number Z2FS22B8-3X/S
Place of Origin German
High Light Rexroth hydraulic throttle valveZ2FS22B8-3X one-way valveGerman Rexroth hydraulic control valve

Parameter

Description / Value

Manufacturer & Model

Rexroth, Type Z2FS

Part Number

R900595835

Variant

Z2FS22B8-3X/S

Function

One-Way Throttle Valve with Integrated Check Valve

Port Size

NG22 (CETOP 8, 1" UNF)

Port Connection

Subplate mounting, ISO 4401-08-... interface

Configuration

Single adjustable throttle element with reverse free-flow check valve.

Flow Direction

Adjustable throttling from Port 1 (P) → Port 2 (A). Free check valve flow from Port 2 (A) → Port 1 (P).

Adjustment Type

Handwheel with fine thread and separate locking nut.

Max. Operating Pressure

315 bar

Max. Flow Rate

~ 200 l/min (Approximate; dependent on pressure drop and precise "B" variant setting range. Consult datasheet.)

Pressure Drop (Typical)

Refer to manufacturer's performance curves (Δp-Q) for the specific "B8" variant.

Setting Range

Continuously adjustable. The "B8" code indies a specific spool/control edge design with defined flow characteristics.

Pressure Compensation

No. This is a non-compensated, adjustable orifice valve.

Housing Material

Steel

Seals

As per "/S" variant: Typically FKM (Viton) seals for standard hydraulic oils.

Fluid Compatibility

Mineral-based hydraulic oils (HL, HLP) to ISO 11158. Compatible with HFD fluids when using standard FKM seals.

Operating Temperature Range

-20°C to +80°C (with standard FKM seals)

Fluid Viscosity Range

10 to 380 mm²/s

Cleanliness Requirement

Minimum ISO 4406 20/18/15. Installation of a high-pressure filter (10 µm nominal or finer) upstream is essential.

Weight

Approximately 9.5 kg (Refer to datasheet for exact value)

Appliion

Used for speed control (metering) of hydraulic actuators in medium to high flow circuits. The "B" variant typically has specific flow characteristics suitable for precise adjustment in a defined range. Commonly used in large industrial machinery such as plastic injection machines, hydraulic presses, and heavy-duty machine tools.

Standards

ISO 4401 (Mounting interface), CETOP

Z2FS6-2-4X/1QJ5V
Z2FS6-2-4X/1QJ5/60
Z2FS6-2-4X/1QJ5
Z2FS6-2-4X/1QV/60
Z2FS6-2-4X/1QV
Z2FS6-2-4X/1Q/60
Z2FS6-2-4X/1Q
Z2FS6-2-4X/2QJ3V/60
Z2FS6-2-4X/2QJ3V
Z2FS6-2-4X/2QJ3/60
Z2FS6-2-4X/2QJ3
Z2FS6-2-4X/2QJ5V/60
Z2FS6-2-4X/2QJ5V
Z2FS6-2-4X/2QJ5/60
Z2FS6-2-4X/2QJ5
Z2FS6-2-4X/2QV/60
Z2FS6-2-4X/2QV
Z2FS6-2-4X/2Q/60
Z2FS6-2-4X/2Q
Z2FS6-3-4X/1QJ3V/60
Z2FS6-3-4X/1QJ3V
Z2FS6-3-4X/1QJ3/60
Z2FS6-3-4X/1QJ3
Z2FS6-3-4X/1QJ5V/60
Z2FS6-3-4X/1QJ5V
Z2FS6-3-4X/1QJ5/60
Z2FS6-3-4X/1QJ5
Z2FS6-3-4X/1QV/60
Z2FS6-3-4X/1QV
Z2FS6-3-4X/1Q/60
Z2FS6-3-4X/1Q
Z2FS6-3-4X/2QJ3V/60
Z2FS6-3-4X/2QJ3V
Z2FS6-3-4X/2QJ3/60
Z2FS6-3-4X/2QJ3
Z2FS6-3-4X/2QJ5V/60
Z2FS6-3-4X/2QJ5V
Z2FS6-3-4X/2QJ5/60
Z2FS6-3-4X/2QJ5
Z2FS6-3-4X/2QV/60
Z2FS6-3-4X/2QV
Z2FS6-3-4X/2Q/60
Z2FS6-3-4X/2Q
Z2FS6-5-4X/1QJ3V/60
Z2FS6-5-4X/1QJ3V
Z2FS6-5-4X/1QJ3/60
Z2FS6-5-4X/1QJ3
Z2FS6-5-4X/1QJ5V/60
Z2FS6-5-4X/1QJ5V
Z2FS6-5-4X/1QJ5/60
Z2FS6-5-4X/1QJ5
Z2FS6-5-4X/1QV/60
Z2FS6-5-4X/1QV
Z2FS6-5-4X/1Q/60
Z2FS6-5-4X/1Q
Z2FS6-5-4X/2QJ3V/60
Z2FS6-5-4X/2QJ3V
Z2FS6-5-4X/2QJ3/60
Z2FS6-5-4X/2QJ3
Z2FS6-5-4X/2QJ5V/60
Z2FS6-5-4X/2QJ5V
Z2FS6-5-4X/2QJ5/60
Z2FS6-5-4X/2QJ5
Z2FS6-5-4X/2QV/60
Z2FS6-5-4X/2QV
Z2FS6-5-4X/2Q/60
Z2FS6-5-4X/2Q
Z2FS6-7-4X/1QJ3V/60
Z2FS6-7-4X/1QJ3V
Z2FS6-7-4X/1QJ3/60
Z2FS6-7-4X/1QJ3
Z2FS6-7-4X/1QJ5V/60
Z2FS6-7-4X/1QJ5V
Z2FS6-7-4X/1QJ5/60
Z2FS6-7-4X/1QJ5
Z2FS6-7-4X/1QV/60
Z2FS6-7-4X/1QV
Z2FS6-7-4X/1Q/60
Z2FS6-7-4X/1Q
Z2FS6-7-4X/2QJ3V/60
Z2FS6-7-4X/2QJ3V
Z2FS6-7-4X/2QJ3/60
Z2FS6-7-4X/2QJ3
Z2FS6-7-4X/2QJ5V/60
Z2FS6-7-4X/2QJ5V
Z2FS6-7-4X/2QJ5/60
Z2FS6-7-4X/2QJ5
Z2FS6-7-4X/2QV/60
Z2FS6-7-4X/2QV

FAQ: R900595835 Z2FS22B8-3X/S One-Way Throttle Valve

Q1: What is the primary function and key difference of the "B8" variant?

A:​ The primary function is to provide manually adjustable, one-way flow control for hydraulic actuators, with free return flow via an integrated check valve. The key identifier "B8" specifies a particular spool design and flow characteristic curve. This means its flow rate at a given handwheel setting follows a predefined, repeatable relationship with the pressure drop, which may differ from other variants (like "5" or "8" in smaller sizes). It is engineered for predictable performance within a specific operating range.

Q2: What does the "NG22" size mean for installation and performance?

A:NG22​ is the nominal size, corresponding to a CETOP 8 / ISO 4401-08 subplate. It indies a valve designed for high-flow appliions. This requires larger port connections (typically 1" UNF) and is physically larger and heavier than NG10 or NG16 valves. Its internal passages are sized to handle flows up to approximately 200 L/min with acceptable pressure losses.

Q3: What is the maximum system pressure rating?

A:​ The valve is rated for a maximum operating pressure of 315 bar.

Q4: How is the valve adjusted and the setting secured?

A:​ Flow is adjusted by turning the handwheel, which moves a precision-ground spindle to vary the orifice size. To prevent the setting from changing due to system vibration or accidental contact, a separate locking nut​ is provided. Once the desired flow is set, this nut must be tightened firmly against the valve housing to lock the spindle in position.

Q5: How are the throttle and check valve functions routed?

A:​ The valve has two main functional paths:

  • Throttled Flow (Controlled Speed):​ Fluid is metered when flowing from Port 1 (P, pressure port)​ to Port 2 (A, actuator port). This controls actuator speed.

  • Free Return Flow:​ Fluid can flow freely from Port 2 (A)​ back to Port 1 (P)​ by pushing open the internal check valve, allowing fast actuator return.

Company Details

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  • 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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  • Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
  • Nan'an, Fujian Province, China
  • https://www.electrichydpump.com/

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