Self operated pressure control valve DN50

The ZZYP series self operated pressure regulating valve provides a highly efficient and self sufficient fluid automation solution engineered specifically for constant pressure regulation, reduction, and stabilization within gas, steam, and liquid piping systems. Fabricated from high grade corrosion resistant investment cast CF8 stainless steel, this valve operates solely on the energy of the process medium itself, entirely eliminating the need for external electrical power supplies or pneumatic instrument air networks. The mechanical layout incorporates a sensitive top-mounted diaphragm actuator balanced against an adjustable high strength carbon steel spring, enabling real time pressure adjustments through a simple manual setting nut. This fully autonomous turnkey valve provides reliable long term pressure balance and bubble tight shutoff, making it essential for nitrogen gas blanketing loops, steam distribution grids, and oil refinery process lines.

Technical Specifications

• Valve Design Classification Self Acting Diaphragm Balanced Single Seat Mechanical Pressure Regulating Valve

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

• Operational Control Source Energy Autarkic Self Powered Operation Utilizing Process Media Feedback Forces

• Pressure Adjustment Mechanism Heavy Duty Externally Coated Adjustable Steel Compression Return Spring

• Actuator Housing Component Robust Formed Steel Diaphragm Casing Coated in Industrial Protective Gray

• Pressure Regulation Functionality Available in Pressure Reducing Inlet Regulation or Back Pressure Relief Configurations

• 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 Seat and Plug Profile Structure

• Internal Pressure Balance Mode Stainless Steel Sealing Bellows Core Design to Neutralize Inlet Pressure Fluctuations

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

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

• Actuator Diaphragm Core Element High Elasticity Fabric Reinforced EPDM or Durable Fluororubber Membrane Disc

• Pressure Setpoint Tuning Interface Lower Mounted High Thread Pitch Mechanical Manual Hexagonal Adjusting Nut

• Flow Trajectory Geometry Profile Streamlined Globe Pattern Casting for High Flow Capacity and Low Noise Generation

• Valve Seat Leakage Class Class IV or Class V Standard Tightness Shutoff Compliance with ANSI B16 104

• Stem Sealing Arrangement Low Friction Self Lubricating High Density PTFE V Ring Packing Assembly

• Maximum Medium Working Temperature 150 degrees Celsius for Gases and 200 degrees Celsius for Steam with Condensate Pot

• Primary Media System Suitability Compressed Air Saturated Steam Nitrogen Gas Natural Gas and Light Process Oils

• Quality Verification Protocols Factory Hydrostatic Shell Integrity Pressure Setpoint Deadband Calibration and Seat Tightness Tests