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, válvula solenóide, 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, tamanho pequeno, reliable operation, bom desempenho de vedação, 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, químico, educational equipment, light industry, high-pressure equipment, farmacêutico, and papermaking industries for remote centralized or local control.

Nome do produto: Pneumatic High-Temperature Ball Valve

Modelo de produto: Q641H/Y
Diâmetro Nominal: DN15~DN300
Estrutura: Esférico

Pressão Nominal: 1.6Mpa～16.0Mpa
Método de conexão: Flange, Wafer, Rosca Interna, Welding

Temperatura aplicável: ≤550ºC
Método de atuação: Pneumático (Manual Operation Available)

Material do corpo da válvula: Aço fundido, Aço inoxidável
Padrão de Fabricação: GB (Padrão Nacional Chinês), DE (Padrão Alemão), API (Padrão Americano), ANSI (Padrão Americano)

Mídia Aplicável: Água, Óleo, Gás, Líquido
Fabricante:Válvula Co. de Zhejiang Kozo., Ltda.

Main Technical Parameters and Performance

Nominal Diameter DN (milímetros): 15~300
Actuator Model: GT, NO, AW series single/double-acting pneumatic actuators

Pressão Nominal (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, Welded
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, válvula solenóide, air filter regulator, position holding valve, limit switch, transmissor de posição da válvula, mecanismo de volante, etc..

Flow Characteristics: Approximately quick-opening type Utilizing a new type of pneumatic actuator, available in double-acting and single-acting (retorno na primavera) 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, menor que 0.01% de KV nominal
Applicable temperature: PPL≤300℃, hard seal≤450℃
Basic error: With positioner: less than ±2% of full stroke
Dead zone: With positioner: menor que 2% of full stroke
Adjustable range: 250:1
Actuator configuration: GT, NO, Atuadores pneumáticos de ação simples e dupla série AW
Control method: Two-position switch control, 4-20controle analógico mA

Q641H, Q641Y Pneumatic High Temperature Ball Valve Main Design Standards

Design e Fabricação: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357
Flange Dimensions: JB/T74～90, GB9112~9131, HGJ44~76, SH3406, ANSI B16.5, JISB2212~2214, DIN2543
Comprimento Estrutural: GB12221-89, ANSI B16.10, ELE B2002, NF E29-305, DIN3202
Inspection and Testing: JB/T 9092, API 598, GB/T13927
Materiais dos Componentes Principais

Q641H, Q641Y Pneumatic High Temperature Ball Valve Component Name Material Name
Valve Body: WCB 304(CF8), 316(CF8M), 316eu(CF3M)
Ball: 2Cr13 + Nitrided, 304 316 316eu
Valve Stem: 2Cr13 304 316 316eu
Sealing Ring: Reinforced PTFE (PPL), Para-Poliestireno, Stainless Steel Sealing Ring
Mídia Aplicável: Água, Gás, Steam, Óleo, etc.; Corrosive Media such as Nitric Acid; Corrosive Media such as Acetic Acid; Corrosive Media such as Urea