API AS Katup Bola Pneumatik Q641F

Pneumatic ball valves have advantages such as compact structure, ukuran kecil, operasi yang andal, low flow resistance coefficient, kinerja penyegelan yang baik, perawatan yang mudah, instalasi yang nyaman, dan kemampuan beradaptasi yang kuat.

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, ukuran kecil, operasi yang andal, low flow resistance coefficient, kinerja penyegelan yang baik, perawatan yang mudah, instalasi yang nyaman, dan kemampuan beradaptasi yang kuat. 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, partikulat, atau media berserat. Pneumatic ball valves are widely used in industrial automatic control systems in petroleum, kimia, peralatan pendidikan, industri ringan, peralatan bertekanan tinggi, farmasi, and papermaking industries for remote centralized control or local control.

Nama Produk: Pneumatic Ball Valve

Model Produk: Q641F/H
Diameter Nominal: DN15～DN400
Struktur: Bulat

Tekanan Nominal: 1.6Mpa～32.0Mpa
Metode Koneksi: Flens, Kue wafer, berulir, Lasan

Suhu yang Berlaku: ≤550ºC
Metode Aktuasi: Pneumatik (manual operation also available)

Bahan Badan Katup: Baja Tuang, Baja Tahan Karat
Standar Manufaktur: GB (Standar Nasional Tiongkok), DARI (Standar Jerman), API (Standar Amerika), ANSI (Standar Amerika)

Media yang Berlaku: Air, Minyak, Gas, Cairan
Pabrikan: Zhejiang Kozo Valve Co., Ltd.

Q641F Pneumatic Ball Valve US API Product Features

(1) Resistensi cairan rendah: 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) Penyegelan batang yang andal: 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
Diameter Nominal 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
Tekanan Nominal (MPa): PN1.6, 2.5, 4.0, 6.4 MPa; ANSI 150, 300LB
Allowable Differential Pressure (MPa): ≤Nominal Pressure
Tipe Badan Katup: Katup bola cor dua tahap
Jenis Koneksi: Bergelang, welded, threaded
Tipe Inti Katup: “HAI” tipe inti katup bola
Pengepakan Penyegelan: Pengemasan PTFE tipe V, flexible graphite packing, dll..
Karakteristik Aliran: Approximately quick-opening type
Operating Range: 0～90°
Leakage Q According to GB/T4213-92, kurang dari 0.01% dari nilai KV
Rentang yang dapat disesuaikan: 250:1 350:1
Configuration actuator: Compatible with GT, SR, ST, PADA, AW series pneumatic actuators
Metode pengendalian: Tipe hidup/mati (two-position on/off control), tipe pengatur (4～20mA control)
Actuator parameters:
Actuator model: GT, PADA, 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: Aktuator akting tunggal: Air-to-close (B) — valve position open (FO) when air is lost; Air-to-open (K) — valve position closed (FC) when air is lost
Aktuator akting ganda: 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 + Nitridasi 304 316 316L
Valve Stem 2Cr13 304 316 316L
Valve Seat Seal PTFE (Politetrafluoroetilen), PPL (Polyphenylene PLC), Segel Logam (Hard Alloy)
Packaging V-type PTFE packing, Flexible Graphite