Пневматический шаровой кран Q641F, API США

Pneumatic ball valves have advantages such as compact structure, small size, reliable operation, low flow resistance coefficient, хорошие характеристики уплотнения, 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, small size, reliable operation, low flow resistance coefficient, хорошие характеристики уплотнения, 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, химический, educational equipment, light industry, high-pressure equipment, фармацевтический, and papermaking industries for remote centralized control or local control.

Название продукта: Pneumatic Ball Valve

Модель продукта: Q641F/H
Номинальный диаметр: DN15～DN400
Структура: сферический

Номинальное давление: 1.6МПа～32,0 МПа
Способ подключения: Фланец, вафля, Резьбовой, Сварной

Применимая температура: ≤550°С
Метод срабатывания: Pneumatic (manual operation also available)

Материал корпуса клапана: Литая сталь, Нержавеющая сталь
Производственный стандарт: ГБ (Китайский национальный стандарт), ОТ (Немецкий стандарт), API (Американский стандарт), АНСИ (Американский стандарт)

Применимые носители: Вода, Масло, Газ, Жидкость
Производитель: Чжэцзянская компания Kozo Valve Co., ООО.

Q641F Pneumatic Ball Valve US API Product Features

(1) Низкое сопротивление жидкости: Шаровые краны имеют самое низкое гидравлическое сопротивление среди всех типов клапанов.. 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) Надежное уплотнение штока: 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
Номинальный диаметр Ду (мм): 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
Номинальное давление (МПа): PN1.6, 2.5, 4.0, 6.4 МПа; АНСИ 150, 300LB
Допустимый перепад давления (МПа): ≤Номинальное давление
Valve Body Type: Two-stage cast ball valve
Тип подключения: Flanged, welded, threaded
Valve Core Type: “O” type ball valve core
Sealing Packing: Уплотнение V-образного типа из ПТФЭ, flexible graphite packing, и т. д..
Характеристики потока: Approximately quick-opening type
Рабочий диапазон: 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: Тип включения/выключения (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″
Температура окружающей среды: -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
Корпус клапана WCB 304(CF8) 316(CF8M) 316л(CF3M)
Ball 2Cr13 + Азотированный 304 316 316л
Стержень клапана 2Cr13 304 316 316л
Valve Seat Seal PTFE (Polytetrafluoroethylene), ЗГЗ (Polyphenylene PLC), Металлическое уплотнение (Hard Alloy)
Packaging V-type PTFE packing, Гибкий графит