Q641H, Q641Y Pneumatic High Temperature Ball Valve

Q641H, Q641Y Pneumatic High Temperature Ball Valve

The Q641H/Y pneumatic high-temperature ball valve consists of a metal hard-seal ball valve and a piston-type pneumatic actuator. The sealing surface uses a metal hard-seal valve seat, suitable for media with a temperature ≤500°C. The pneumatic high-temperature ball valve can be equipped with a valve positioner to input control signals (4-20mA DC or 1-5V DC) and a pneumatic power source for operation. It can also be equipped with a travel limit switch, solenoid valve, pressure reducing valve, and a 0.4～0.7MPa pneumatic power source to achieve on/off operation, and sends out two pairs of passive contact signals to indicate the valve’s opening and closing. The pneumatic high-temperature ball valve as a whole has advantages such as compact structure, kleine Größe, reliable operation, good sealing performance, easy maintenance, convenient installation, and strong adaptability.Especially suitable for applications involving viscous, particulate, or fibrous media. Pneumatic high-temperature ball valves are widely used in industrial automatic control systems in petroleum, chemisch, educational equipment, Leichtindustrie, high-pressure equipment, pharmaceutical, and papermaking industries for remote centralized or local control.

Produktname: Pneumatic High-Temperature Ball Valve

Produktmodell: Q641H/Y
Nenndurchmesser: DN15 ~ DN300
Structure: Spherical

Nenndruck: 1.6Mpa～16.0Mpa
Verbindungsmethode: Flansch, Wafer, Internal Thread, Welding

Anwendbare Temperatur: ≤550ºC
Betätigungsmethode: Pneumatisch (Manual Operation Available)

Ventilkörpermaterial: Gussstahl, Edelstahl
Herstellungsstandard: GB (Chinesischer nationaler Standard), AUS (Deutscher Standard), API (Amerikanischer Standard), ANSI (Amerikanischer Standard)

Anwendbare Medien: Wasser, Öl, Gas, Flüssig
Hersteller:Zhejiang Kozo Valve Co., Ltd.

Main Technical Parameters and Performance

Nenndurchmesser DN (mm): 15～300
Actuator Model: GT, AT, AW series single/double-acting pneumatic actuators

Nenndruck (MPa): PN1.6, 2.5, 4.0, 6.4; 10.0, 16.0, MPa
Supply Pressure: 0.4～0.7MPa

Ventilkörpertyp: Zweistufiger Kugelhahn aus Guss
Air Source Interface: G1/4″, G1/8″, G3/8″, G1/2″

Verbindungstyp: Mit Flansch, Welded
Umgebungstemperatur: -30～+70℃

Ventilkerntyp: “O” Typ Kugelhahnkern
Actuation Type: Single-acting actuator, double-acting actuator

Dichtungspackung: Flexible graphite, spiral wound gasket
Optional Accessories: Positioner, solenoid valve, air filter regulator, position holding valve, limit switch, valve position transmitter, handwheel mechanism, usw.

Strömungseigenschaften: Approximately quick-opening type Utilizing a new type of pneumatic actuator, available in double-acting and single-acting (spring return) versions, with gear and rack drive for safety and reliability; large-diameter valves employ the AW series pneumatic actuator with a fork-type drive, featuring a reasonable structure, high output force, and available in double-acting and single-acting versions.

1. Gear-type double piston design, high output torque, and compact size.

2. Cylinder made of aluminum alloy, lightweight and aesthetically pleasing.

3. Manual operating mechanisms can be installed at the top or bottom.

4. Rack-and-pinion connection allows for adjustment of opening angle and rated flow rate.

5. Actuators can be optionally equipped with electrical signal feedback indicators and accessories for automated operation.

6. ISO5211 standard connection facilitates product installation and replacement.

7. Adjustable screws at both ends allow for ±4° adjustment range between 0° and 90° for standard products, ensuring synchronization accuracy with the valve.

Operating range: 0~90°
Leakage Q: According to GB/T4213-92, less than 0.01% Nenn-KV
Applicable temperature: PPL≤300℃, hard seal≤450℃
Basic error: With positioner: less than ±2% of full stroke
Dead zone: With positioner: less than 2% of full stroke
Einstellbarer Bereich: 250:1
Aktuatorkonfiguration: GT, AT, AW series single and double acting pneumatic actuators
Control method: Two-position switch control, 4-20mA analog control

Q641H, Q641Y Pneumatic High Temperature Ball Valve Main Design Standards

Design and Manufacturing: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357
Flange Dimensions: JB/T74～90, GB9112～9131, HGJ44～76, SH3406, ANSI B16.5, JIS B2212～2214, DIN2543
Structural Length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202
Inspection and Testing: JB/T 9092, API 598, GB/T13927
Main Component Materials

Q641H, Q641Y Pneumatic High Temperature Ball Valve Component Name Material Name
Ventilkörper: WCB 304(CF8), 316(CF8M), 316L(CF3M)
Ball: 2Cr13 + Nitriert, 304 316 316L
Valve Stem: 2Cr13 304 316 316L
Sealing Ring: Reinforced PTFE (PPL), Para-Polystyrol, Stainless Steel Sealing Ring
Anwendbare Medien: Wasser, Gas, Steam, Öl, usw.; Corrosive Media such as Nitric Acid; Corrosive Media such as Acetic Acid; Corrosive Media such as Urea