Features

01. This valve adopts double-guide structure with stable operation of valve stem and valve core&stable performance
02. This is modelled Taiwan model, neoteric structure
03. Normally with top handwheel
04. Special configuration: Q569-◆---with limit switch (valve position signal output)

Basic Structure Diagram

Main Component Material Table

Main Technical Parameters

Note: Applicable temperatures for bellows sealed type (℃), normal Vd:-29～350, special Va:-29～150 (PTFE sealing), 
          Vc:-29～250 (PPL sealing), Ve:-60～-100, Vf:-100～-196.

External Dimension and Weight

Notes:

1. The unit of nominal pressure PN in the above table is bar. The weight in the table is normal type data without accessories.                
2. The flange is manufactured according to JB/T79-1994 standard by default, and can also be manufactured according to the standards specified by the user, such as GB/T9124, HG/T20592, ANSI, JIS, DIN, etc.

Q569 Series Pneumatic Piston Quick Cut-off Valve – Taiwan Model

The BEST Q569 Series Pneumatic Piston Quick Cut-off Valve is designed for rapid on-off control in industrial process piping systems. Modelled on the Taiwan-style design, this valve features a double-guide structure to support stable movement of the valve stem and valve core.

Equipped with a pneumatic piston actuator, the Q569 series provides quick valve operation and is suitable for applications requiring fast shut-off. The valve is commonly supplied with a top-mounted handwheel. A limit switch for valve position signal output is available as a special configuration.

Key Features

• Pneumatic Piston Actuator: Provides pneumatic operation for rapid valve opening and closing.

• Double-Guide Structure: Helps stabilize the movement of the valve stem and valve core.

• Quick-Opening Characteristic: The inherent flow characteristic is specified as quick open.

• Top-Mounted Handwheel: Normally supplied with a handwheel for manual operation.

• Optional Position Feedback: Limit switch configuration is available for valve position signal output.

• Multiple Bonnet Options: Normal, cryogenic, heat-dissipation, high-temperature and bellows-sealed configurations are listed.

• Multiple Connection Options: Flanged, threaded and welded connections are available.

• Material Options: WCB, SS304, SS316 and SS316L configurations are listed, with additional trim and sealing options.

Technical Specifications

Main Applications

The Q569 series is suitable for industrial process applications requiring rapid pneumatic shut-off. The instruction manual's ordering example includes fuel gas as the medium and also provides fields for liquid, gas and steam flow requirements.

Typical application areas should be selected according to the actual medium, pressure, temperature and valve configuration.

Valve Body and Trim Materials

The manual lists the following material options:

• Valve Body and Bonnet: WCB, CF8, CF8M and CF3M.

• Valve Core: SS304, SS316 and SS316L, with overlaying Stellite alloy or PTFE options.

• Valve Seat: SS304, SS316 and SS316L, with overlaying Stellite alloy or PTFE options.

• Valve Stem: 2Cr13, 17-4PH, SS304, SS316 and SS316L.

• Packing: PTFE for the stated normal temperature range; flexible graphite for temperatures above 150°C.

• Cylinder O-ring: NBR as standard, VITON as a special option.

• Spring: 60Si2Mn as standard, 50CrVA as a special option.

Pneumatic Actuator and Accessories

The Q569 series uses a pneumatic piston actuator. Available control modes include:

• Single-acting normally closed

• Single-acting normally open

• Double-acting

The valve's position during air supply failure can be configured to open, close or hold position, depending on the selected control arrangement.

Accessory options listed in the manual include:

• Solenoid valve

• Explosion-proof solenoid valve

• Air filter pressure-relief valve

• Passive-contact travel switch

• Electromagnetic induction switch

• Silencer

The manual lists AC220V 50/60Hz and DC24V solenoid valve supply options, with an allowable voltage tolerance of ±10%. Standard protection is IP65, with IP67 available as a special option.

Bonnet and Temperature Options

The manual lists several bonnet configurations:

• Normal type: -29°C to 250°C, with a special range of -60°C to -196°C listed for cryogenic configurations.

• Heat-dissipation type: -29°C to 350°C or -29°C to 450°C, depending on the configuration.

• High-temperature type: -29°C to 595°C.

• Bellows-sealed type: temperature ranges depend on the selected sealing material and configuration.

The allowable operating temperature must be confirmed against the selected bonnet, packing, sealing material and valve configuration.

Installation and Selection

For accurate valve selection, users should provide the medium, required flow, design pressure, medium temperature, inlet and outlet pressures, nominal diameter, valve seat diameter, nominal pressure, flow coefficient, body and trim materials, connection standard, leakage requirement and actuator control mode.

The instruction manual recommends confirming the flow coefficient according to the actual operating parameters.

Warranty

The instruction manual specifies a one-year warranty under the technical conditions stated in the manual, effective from delivery. Faults caused by user operation or installation are excluded from warranty coverage; assistance will be provided to help resolve such issues.

For selection assistance, please provide the operating conditions and required accessories to BEST AUTOVALVE.