Pneumatic diaphragm single seat control valve

The ZJHP series pneumatic diaphragm single seat linear control valve provides a premier automated throttling solution specifically engineered for modulating complex fluid variables including system pressure, medium temperature, and accurate flow velocity within high capacity piping infrastructure Fabricated from investment cast CF8 stainless steel, the single seat body alignment features top guided trim elements that optimize mechanical tracking longevity and minimize vibration during severe pressure drops The upper assembly features an ultra responsive multi spring pneumatic diaphragm actuator linked to a robust electro pneumatic positioner instrument, allowing the valve assembly to adapt instantly to fluctuating analogue control signals This total automation combination ensures minimal seat leakage and excellent linear regulation making it highly essential for industrial boiler utilities, chemical refinement reactors, and thermal oil heating loops

Technical Specifications

• Valve Design Classification Pneumatic Actuated Multi Spring Diaphragm Single Seat Globe Control Valve

• Body Material Construction Premium Cast Stainless Steel CF8 Grade ASTM A351 Specifications

• Actuator Operational Drive Heavy Duty Multi Spring Pneumatic Diaphragm Actuator with High Sensitivity

• Valve Positioning Instrument Top Tier Modulating Electro Pneumatic Positioner Assembly Attached to Yoke

• Command Input Signal Standard 4 to 20 mA DC Industrial Analogue Control Loop Input

• Pneumatic Instrument Air Supply 0.14 to 0.40 MPa Clean Dry Instrument Grade Compressed Air

• Nominal Pipe Joint Size DN50 or 2 inch Equivalent Full Bore Line Connection Diameter

• Main Pipe Pressure Rating PN16 Nominal Operational Pressure Rating 1.6 MPa Equivalent

• Internal Sealing Trim Material Hardened Stainless Steel 304 Linear Tapered Single Seat and Plug Configuration

• Valve Seat Leakage Class Class IV or Class V Standard Shutoff Alignment Matching ANSI B16 104

• Main Pipeline Connection Type RF Raised Face Flanged Ends for Secure Bolted Alignment

• Main Flange Standard Specification EN 1092 1 DIN 2501 Flange Clearance Connection Standards

• Stem Sealing Construction Multi Ring Self Adjusting High Density PTFE V Ring Packing Assembly

• Flow Characteristic Profile Equal Percentage or Highly Accurate Linear Modulating Curve Output

• Instrument Air Interface Fitting Threaded Female G 1 4 inch or NPT Air Line Connectors

• Actuator Housing Protection Weatherproof Industrial Baked Enamel Powder Coated Blue Finish Casing

• Travel Status Indication Integrated Clear Mechanical Pointer Scale Plate and Gauge on Actuator Pillar

• Maximum Medium Working Temperature 230 degrees Celsius for Saturated Steam and High Heat Thermal Oils

• Primary Media System Suitability Industrial Saturated Steam Thermal Conductive Oil Fresh Water Chemical Solvents

• Quality Verification Protocols Hydrostatic Shell Testing Control Loop Calibration and Seat Leakage Evaluation