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Shanghai Yuhu Self Control Valve Co., Ltd
GQ641M Pneumatic High Temperature Ball Valve
NegotiableUpdate on 04/07
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Overview
GQ641M Pneumatic High Temperature Ball Valve (High Temperature Resistant to 650 ℃) Pneumatic High Temperature Ball Valve (High Temperature Resistant to 350 ℃) I. Overview of Pneumatic Three way Internal Thread Ball Valve Products The GQ641M Pneumatic High Temperature Ball Valve produced by Shanghai Yuhu Company is composed of a metal hard seal ball valve and a piston type pneumatic actuator
Product Details
GQ641M Pneumatic High Temperature Ball Valve
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| Pneumatic high-temperature ball valve (resistant to high temperature of 650 ℃) | Pneumatic high-temperature ball valve (resistant to high temperature of 350 ℃) |
1、 Overview of Pneumatic Three way Internal Thread Ball Valve Products
The GQ641M pneumatic high-temperature ball valve produced by Shanghai Yuhu Company is composed of a metal hard seal ball valve and a piston type pneumatic actuator. The sealing surface adopts a metal hard sealing valve seat, which can be applied to media within ≤ 650 °. Pneumatic high-temperature ball valves can be equipped with valve positioners to input control signals (4-20mADC or 1-5VDC) for air supply to control operation. It can also be equipped with travel limit switches, solenoid valves, pressure reducing valves, and 0.4-0.7MPa gas sources to achieve switch operation, and send two pairs of passive contact signals to indicate the switch of the valve. Pneumatic high-temperature ball valves have the advantages of compact structure, small volume, reliable operation, good sealing, easy maintenance, convenient installation, and strong adaptability. Especially suitable for situations where the medium is viscous, contains particles, and has fibrous properties. Pneumatic high-temperature ball valves are widely used in automatic control systems for industries such as petroleum, chemical, teaching equipment, light industry, high-pressure equipment, pharmaceuticals, and papermaking, for remote centralized control or on-site control.
2、 Main technical parameters of pneumatic high-temperature ball valve
| Nominal diameter DN (mm) | 15~200 | Model of actuator | GT, AT, AW series single and double acting pneumatic actuators |
|---|---|---|---|
| Nominal pressure (MPa) | PN1.6、2.5、4.0、6.4 MPa | gas supply pressure | 0.4～0.7MPa |
| Valve body form | Two stage cast ball valve | air source interface | G1/4"、G1/8"、G3/8"、G1/2" |
| connection type | Flange type, welded type | ambient temperature | -30～+70℃ |
| Valve core form | O-shaped spherical valve core | mode of action | Single acting actuator, double acting actuator |
| Sealing packing | Flexible graphite, metal wrapped gasket | Can be equipped with accessories | Positioner, solenoid valve, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc |
| flow characteristics | Approximate quick opening type |
Adopting a new type of pneumatic actuator, with double acting and single acting (spring reset), gear rack transmission, safe and reliable; The large-diameter valve adopts a series of AW type pneumatic actuators with fork type transmission, with a reasonable structure and high output force, and is available in double acting and single acting types. |
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| Action range | 0～90° | ||
| Leakage quantity Q | According to GB/T4213-92, less than 0.01% of rated KV | ||
| Applicable Temperature | PPL ≤ 250 ℃, hard seal ≤ 650 ℃ | ||
| Basic error | Equipped with locator: less than ± 2% of the full stroke | ||
| dead zone | Equipped with locator: less than 2% of the full stroke | ||
| adjustable range | 250：1 | ||
| Configure execution mechanism | GT, AT, AW series single and double acting pneumatic actuators | ||
| Control method | Two position switch control, 4-20mA analog control | ||
3、 Main component materials of pneumatic high-temperature ball valve
| Part Name | Material Name | |||
|---|---|---|---|---|
| valve body | WCB | 304(CF8) | 316(CF8M) | 316L(CF3M) |
| sphere | 2Cr13+nitriding treatment | 304 | 316 | 316L |
| valve stem | 2Cr13 | 304 | 316 | 316L |
| sealing ring | Enhanced polytetrafluoroethylene (PPL), para polystyrene, stainless steel sealing ring | |||
4、 Main performance specifications for pneumatic high-temperature ball valves
| Nominal diameter DN (mm) | DN15-300 | |||||
|---|---|---|---|---|---|---|
| Nominal Pressure | PN(MPa) | 1.0 | 1.6 | 2.5 | 4.0 | 6.4 |
| Test pressure | strength test | 1.5 | 2.4 | 3.75 | 6.0 | 9.60 |
| Sealing Test | 1.1 | 1.76 | 2.75 | 4.4 | 7.04 | |
| Low pressure airtightness test | 0.5～0.7 | |||||
| Applicable Medium | High temperature media such as water, gas, steam, oil, etc | |||||
5、 Selection of Pneumatic High Temperature Ball Valve Products
(1) Valve body parameters: nominal diameter, working pressure, process medium, usage scenario, valve body material, and other series of parameters.
(2) Actuator parameters: actuator form, control mode, control signal (4-20mA, 1-5V), action mode (air open, air closed)
Please provide the above technical parameters in as much detail as possible to facilitate our company's operations and technical personnel to accurately select for you. If you have any questions You can call us and we will do our best to provide you with high-quality service!
