Q641F 空気圧ボールバルブ米国 API

Pneumatic ball valves have advantages such as compact structure, 小型, reliable operation, low flow resistance coefficient, good sealing performance, easy maintenance, convenient installation, and strong adaptability.

The Q641F/H pneumatic ball valve consists of a high-precision pneumatic actuator and a precision-cast ball valve. It is mainly divided into two categories: pneumatic soft-seal ball valves (≤200°) and pneumatic hard-seal ball valves (≤550°). Pneumatic ball valves have advantages such as compact structure, 小型, reliable operation, low flow resistance coefficient, good sealing performance, easy maintenance, convenient installation, and strong adaptability. Pneumatic ball valves can be equipped with travel limit switches, solenoid valves, pressure reducing valves, and a 0.4-0.7MPa air source to achieve on/off operation, and send two pairs of passive contact signals to indicate the valve’s opening and closing. Pneumatic flange ball valves are particularly suitable for applications involving viscous, particulate, or fibrous media. Pneumatic ball valves are widely used in industrial automatic control systems in petroleum, 化学薬品, educational equipment, light industry, high-pressure equipment, 医薬品, and papermaking industries for remote centralized control or local control.

製品名: Pneumatic Ball Valve

製品型式: Q641F/H
呼び径: DN15～DN400
Structure: 球状

呼び圧力: 1.6Mpa～32.0Mpa
接続方法: フランジ, ウエハ, ネジ付き, 溶接

適用温度: ≤550℃
作動方法: 空気圧 (manual operation also available)

バルブボディ材質: 鋳鋼, ステンレス鋼
製造基準: GB (中国国家規格), から (ドイツ規格), API (アメリカンスタンダード), ANSI (アメリカンスタンダード)

対象メディア: 水, 油, ガス, 液体
メーカー: 浙江Kozoバルブ社, 株式会社.

Q641F Pneumatic Ball Valve US API Product Features

(1) 低い流体抵抗: ボールバルブは、すべてのバルブタイプの中で流体抵抗が最も低いです. Even reduced-bore ball valves have very low fluid resistance.

(2) Thrust bearings reduce stem friction torque, ensuring balanced and flexible operation of the stem over long periods.

(3) Excellent seat sealing performance: The sealing rings, made of materials such as PTFE, are easy to seal, and the sealing capacity of the ball valve increases with increasing medium pressure.

(4) 信頼性の高いステムシール: Because the stem only rotates and does not move up or down, the stem packing seal is not easily damaged, and the sealing capacity increases with increasing medium pressure.

(5) Due to the good self-lubricating properties of materials such as PTFE, friction loss with the ball is low, extending the service life of the ball valve.

(6) The bottom-mounted stem and the raised step on the stem head prevent the stem from being ejected. If a fire causes damage to the stem seal, the raised step can still form metal-to-metal contact with the valve body, ensuring the stem seal.

Technical Parameters
Nominal Diameter DN (mm): 15 20 25 32 40 50 65 80 100 125 150 200
Rated Flow Coefficient KV: 21 38 72 112 170 273 384 512 940 1452 2222 3589
呼び圧力 (MPa): PN1.6, 2.5, 4.0, 6.4 MPa; ANSI 150, 300LB
Allowable Differential Pressure (MPa): ≤Nominal Pressure
Valve Body Type: Two-stage cast ball valve
Connection Type: Flanged, welded, threaded
Valve Core Type: “O” type ball valve core
Sealing Packing: V型PTFEパッキン, flexible graphite packing, 等.
Flow Characteristics: Approximately quick-opening type
Operating Range: 0～90°
Leakage Q According to GB/T4213-92, less than 0.01% of rated KV
Adjustable range: 250:1 350:1
Configuration actuator: Compatible with GT, SR, ST, AT, AW series pneumatic actuators
Control method: On/off type (two-position on/off control), regulating type (4～20mA control)
Actuator parameters:
Actuator model: GT, AT, AR, AW series single and double-acting pneumatic actuators
Air supply pressure: 0.4～0.7MPa
Air source interface: G1/4″, G1/8″, G3/8″, G1/2″
Ambient temperature: -30～+70℃
Action type: Single-acting actuator: Air-to-close (B) — valve position open (FO) when air is lost; Air-to-open (K) — valve position closed (FC) when air is lost
Double-acting actuator: Air-to-close (B) — valve position held (FL) when air is lost; Air-to-open (K) — Valve Position Holding (FL) in case of air loss. Optional accessories include positioners, solenoid valves, air filter regulators, position holding valves, limit switches, valve position transmitters, and handwheel mechanisms.

Part Materials
Part Name Material
Valve Body WCB 304(CF8) 316(CF8M) 316L(CF3M)
Ball 2Cr13 + Nitrided 304 316 316L
Valve Stem 2Cr13 304 316 316L
Valve Seat Seal PTFE (Polytetrafluoroethylene), PPL (Polyphenylene PLC), メタルシール (Hard Alloy)
Packaging V-type PTFE packing, Flexible Graphite