Q641F 공압 볼 밸브 US API

Pneumatic ball valves have advantages such as compact structure, 작은 크기, 안정적인 작동, low flow resistance coefficient, 좋은 밀봉 성능, 쉬운 유지 보수, 편리한 설치, 그리고 적응력이 강하다.

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, 작은 크기, 안정적인 작동, low flow resistance coefficient, 좋은 밀봉 성능, 쉬운 유지 보수, 편리한 설치, 그리고 적응력이 강하다. 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, 미립자, 또는 섬유질 매체. Pneumatic ball valves are widely used in industrial automatic control systems in petroleum, 화학적인, 교육 장비, 경공업, 고압 장비, 제약, and papermaking industries for remote centralized control or local control.

제품명: Pneumatic Ball Valve

제품 모델: Q641F/H
공칭 직경: DN15～DN400
구조: 구의

공칭 압력: 1.6Mpa～32.0Mpa
연결 방법: 플랜지, 웨이퍼, 스레드, 용접됨

적용온도: ≤550°C
작동 방식: 영적인 (manual operation also available)

밸브 본체 재질: 주강, 스테인레스 스틸
제조표준: GB (중국 국가 표준), 에서 (독일 표준), API (미국 표준), 안시 (미국 표준)

적용 가능한 미디어: 물, 기름, 가스, 액체
제조업체: 절강고조밸브(Zhejiang Kozo Valve Co.), 주식회사.

Q641F Pneumatic Ball Valve US API Product Features

(1) Low fluid resistance: Ball valves have the lowest fluid resistance of all valve types. 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) Reliable stem sealing: 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
공칭 직경 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
공칭 압력 (MPa): PN1.6, 2.5, 4.0, 6.4 MPa; 안시 150, 300LB
Allowable Differential Pressure (MPa): ≤Nominal Pressure
밸브 몸체 유형: 2단 캐스트 볼 밸브
연결 유형: 플랜지형, welded, threaded
밸브 코어 유형: “영형” 유형 볼 밸브 코어
씰링 포장: V-type PTFE packing, flexible graphite packing, 등.
흐름특성: Approximately quick-opening type
Operating Range: 0~90°
Leakage Q According to GB/T4213-92, 미만 0.01% 정격 KV의
조정 가능한 범위: 250:1 350:1
Configuration actuator: Compatible with GT, SR, ST, 에, AW series pneumatic actuators
제어방식: On/off type (two-position on/off control), regulating type (4～20mA control)
Actuator parameters:
Actuator model: GT, 에, 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: 단동 액츄에이터: 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) 316엘(CF3M)
Ball 2Cr13 + 질화 304 316 316엘
Valve Stem 2Cr13 304 316 316엘
Valve Seat Seal PTFE (Polytetrafluoroethylene), PPL (Polyphenylene PLC), Metal Seal (Hard Alloy)
Packaging V-type PTFE packing, Flexible Graphite