Q641H, Robinet à bille pneumatique haute température Q641Y

Q641H, Robinet à bille pneumatique haute température Q641Y

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, petite taille, 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, chimique, educational equipment, light industry, high-pressure equipment, pharmaceutique, and papermaking industries for remote centralized or local control.

Nom du produit: Pneumatic High-Temperature Ball Valve

Modèle de produit: Q641H/Y
Diamètre nominal: DN15 ~ DN300
Structure: Sphérique

Pression nominale: 1.6Mpa～16.0Mpa
Méthode de connexion: Bride, Tranche, Filetage interne, Welding

Température Applicable: ≤550ºC
Méthode d'actionnement: Pneumatique (Manual Operation Available)

Matériau du corps de vanne: Acier moulé, Acier inoxydable
Norme de fabrication: FR (Norme nationale chinoise), DEPUIS (Norme allemande), API (Norme américaine), ANSI (Norme américaine)

Médias applicables: Eau, Huile, Gaz, Liquide
Fabricant:Zhejiang Kozo Valve Co., Ltée.

Main Technical Parameters and Performance

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

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

Valve Body Type: Two-stage cast ball valve
Air Source Interface: G1/4″, G1/8″, G3/8″, G1/2″

Connection Type: Flanged, Soudé
Ambient Temperature: -30～+70℃

Valve Core Type: “O” type ball valve core
Actuation Type: Single-acting actuator, double-acting actuator

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

Flow Characteristics: 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% of rated KV
Température applicable: 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
Adjustable range: 250:1
Actuator configuration: 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

Conception et fabrication: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357
Dimensions de la bride: JB/T74～90, GB9112～9131, HGJ44～76, SH3406, ANSI B16.5, JIS B2212～2214, DIN2543
Longueur structurelle: 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
Corps de vanne: WCB 304(CF8), 316(CF8M), 316L(CF3M)
Balle: 2Cr13 + Nitrided, 304 316 316L
Valve Stem: 2Cr13 304 316 316L
Sealing Ring: Reinforced PTFE (PPL), Para-Polystyrene, Stainless Steel Sealing Ring
Médias applicables: Eau, Gaz, Steam, Huile, etc.; Corrosive Media such as Nitric Acid; Corrosive Media such as Acetic Acid; Corrosive Media such as Urea