Q641F บอลวาล์วนิวเมติก US API

Pneumatic ball valves have advantages such as compact structure, ขนาดเล็ก, 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, ขนาดเล็ก, 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, วาล์วลดความดัน, 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, เคมี, educational equipment, light industry, high-pressure equipment, ยา, and papermaking industries for remote centralized control or local control.

ชื่อสินค้า: Pneumatic Ball Valve

รุ่นสินค้า: Q641F/H
เส้นผ่านศูนย์กลางที่กำหนด: DN15～DN400
โครงสร้าง: ทรงกลม

ความดันที่กำหนด: 1.6เมกะปาสคาล~32.0เมกะปาสคาล
วิธีการเชื่อมต่อ: หน้าแปลน, เวเฟอร์, เกลียว, Welded

อุณหภูมิที่ใช้งานได้: ≤550oC
วิธีการกระตุ้น: นิวเมติก (manual operation also available)

วัสดุตัววาล์ว: เหล็กหล่อ, สแตนเลส
มาตรฐานการผลิต: กิกะไบต์ (มาตรฐานแห่งชาติจีน), จาก (มาตรฐานเยอรมัน), เอพีไอ (อเมริกันสแตนดาร์ด), แอนซี่ (อเมริกันสแตนดาร์ด)

สื่อที่เกี่ยวข้อง: น้ำ, น้ำมัน, แก๊ส, ของเหลว
ผู้ผลิต: เจ้อเจียง โคโซ วาล์ว บจก., บจ.

Q641F Pneumatic Ball Valve US API Product Features

(1) ความต้านทานของเหลวต่ำ: 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) การปิดผนึกก้านที่เชื่อถือได้: 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 (มม): 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
ความดันที่กำหนด (MPa): PN1.6, 2.5, 4.0, 6.4 MPa; แอนซี่ 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: บรรจุภัณฑ์ PTFE ชนิด V, flexible graphite packing, ฯลฯ.
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(ซีเอฟ8) 316(CF8M) 316ล(CF3M)
Ball 2Cr13 + Nitrided 304 316 316ล
Valve Stem 2Cr13 304 316 316ล
Valve Seat Seal PTFE (Polytetrafluoroethylene), ปปล (Polyphenylene PLC), ซีลโลหะ (Hard Alloy)
Packaging V-type PTFE packing, Flexible Graphite