Stainless Steel Pneumatic Diaphragm Control Valve
Description
Stainless Steel Pneumatic Diaphragm Control Valve – Technical Datasheet
1. Product Overview
This product is a high-performance pneumatic diaphragm control valve, designed for precise flow regulation in industrial pipelines. As shown in the provided images, it features a robust CF8M (SS316) stainless steel flanged body (marked 8″ Class 150), a red pneumatic diaphragm actuator, an electro-pneumatic valve positioner, and an air filter regulator with a pressure gauge. It is widely used in chemical, petrochemical, water treatment, and pharmaceutical industries for corrosive media and strict process control requirements.
2. Technical Specifications (Nameplate Data)
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Diaphragm Control Valve |
| Brand | SAVVY |
| Nominal Diameter (DN) | 8″ (DN200) |
| Nominal Pressure (PN) | Class 150 (ANSI) |
| Body Material | CF8M (Stainless Steel 316) |
| Connection Type | Flanged (RF / FF) |
| Operation Mode | Pneumatic Diaphragm Actuator (Spring Return) |
| Action Type | Air-to-Open (FC) / Air-to-Close (FO) |
| Applicable Temperature | -20°C ~ +200°C (Depends on packing/seat material) |
| Applicable Medium | Water, steam, oil, corrosive chemical fluids |
| Flow Characteristic | Equal Percentage / Linear / Quick Opening |
| Air Supply Pressure | 0.14 – 0.4 MPa (1.4 – 4 bar) |
3. Material of Main Parts
| Part Name | Material Specification |
|---|---|
| Valve Body | CF8M (ASTM A351 SS316) |
| Bonnet | CF8M / SS304 |
| Valve Plug / Disc | SS316 / SS304 with Stellite overlay (optional) |
| Seat | SS316 / PTFE / Metal-to-Metal |
| Stem | SS316 / SS304 |
| Diaphragm Actuator Casing | Carbon Steel, Red Epoxy Coated |
| Diaphragm | NBR / EPDM / Viton |
| Spring | Si-Mn Steel / SS304 |
| Positioner | Electro-Pneumatic (Black housing, e.g., AIRTAC/YTC) |
| Air Filter Regulator | Aluminum Alloy with pressure gauge & transparent bowl |
4. Applicable Standards
| Standard Type | Reference Standard |
|---|---|
| Design & Manufacture | GB/T 4213 / ANSI/ISA S75.01 / IEC 60534 |
| Flange Connection | ANSI B16.5 / DIN 2501 / JIS B2212 |
| Face to Face | ANSI/ISA S75.16 / IEC 60534-3-2 |
| Pressure Test | API 598 / GB/T 13927 |
| Leakage Class | ANSI Class IV / V / VI (Metal seat / Soft seat) |
5. Key Features
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High-Precision Control: Equipped with an electro-pneumatic valve positioner, ensuring accurate and rapid response to control signals (4-20mA).
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Superior Corrosion Resistance: The CF8M (SS316) stainless steel body and internal parts are highly resistant to aggressive and corrosive media, extending service life.
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Integrated Accessories: Pre-assembled with a black positioner and an air filter regulator with a pressure gauge for easy installation and quick setup on site.
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Robust Actuator: The red multi-spring pneumatic diaphragm actuator provides strong thrust and reliable fail-safe operation (spring return).
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Versatile Flow Characteristics: Available in Equal Percentage, Linear, and Quick Opening characteristics to meet diverse process control requirements.
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Visual Indicator: The actuator yoke features a mechanical stroke indicator to easily monitor the valve opening position.
