1. Overview Concepts
TAG No: Unique factory equipment identifier, e.g., FV-1001
Quantity: Procurement/installation count of this model, e.g., 1 unit
P & ID No: Pipeline number in P&ID for location positioning
Line Size: Pipeline nominal diameter, wall thickness etc., supplement with engineering drawings
Line Material: Pipeline material such as carbon steel, stainless steel
Service: Used for transporting media e.g., sodium chloride, sodium sulfate solutions
Project Name/Contract No/Unit Name: Identification information of project, contract and unit
2. Fluid and Operating Condition Concepts
Fluid Name: Medium through control valve, e.g., sodium chloride, sodium sulfate solutions
Fluid State: Physical state of medium, e.g., Liquid
Operation Temp: Medium temperature at control valve, max/normal/min e.g., 25℃
Flow Rate Unit: Measurement unit of flow rate, e.g., m³/H
Flow Rate: Flow range through control valve, max 8 m³/H, normal 5 m³/day, min 2 m³/day
Pressure Unit: Measurement unit of pressure, e.g., MPa(g)
Inlet Pressure: Pressure at control valve inlet, max/normal/min e.g., 0.3 MPa(g)
Outlet Pressure: Pressure at control valve outlet, max/normal/min e.g., 0.28 MPa(g)
Differential Pressure: Difference between inlet and outlet pressure, 0.02 MPa(g)
OP. Gr.: Relative density of medium under operating conditions, e.g., 1.010
ST Density: Medium density under standard conditions, e.g., 1010 Kg/m³
Calculated KV Value: Flow coefficient, max 17.98, normal 11.24, min 4.49
Valve Travel (%): Valve core opening degree, max 90.31%, normal 76.49%, min 49.55%
Noise Level: Operation noise intensity, e.g., ≤80 dB
3. Valve Body Component Concepts
Type: Globe Valve, suitable for medium-low pressure with small leakage
Model No.: Manufacturer's model designation, e.g., ZJHP
Body Size (DN): Nominal diameter of valve body, e.g., 40
Port Size (dN): Nominal diameter of valve seat, e.g., 40
Rated KV Value: Flow coefficient at full open, e.g., KV=25
Nominal Pressure (Rating): Pressure resistance grade, e.g., PN10
Connection: Flange standard, e.g., HG/T20592-2009 RF
Material:
Body: e.g., 4A
Plug, Seat, Stem: e.g., 2205 duplex stainless steel
Leakage Class: Sealing performance grade, e.g., ANSI B16.104-IV
Flow Characteristic: EQ % equal percentage characteristic for precise regulation
Bonnet Type: Normal Temperature Type, applicable to -29~200℃
Packing: PTFE with chemical corrosion and high temperature resistance
Action Type: Air-to-Open, auto-closes on air supply failure
4. Actuator Concepts
Type: Multi-Spring Pneumatic Diaphragm Type, compact with stable output
Model No.: Manufacturer's model designation, e.g., ZHB23
Travel (mm): Maximum moving distance of valve core, e.g., 25 mm
Air Supply Pressure (MPa): Driving air source pressure, e.g., 0.3 MPa
Spring Range (KPa): Pressure adjustment range, e.g., 80-240 KPa
Input Signal: Control electrical signal, usually 4-20mA
Handwheel Mechanism: TOP-mounted for manual operation
Shut-off Differential Pressure (MPa): Maximum withstand pressure when closed, e.g., 1 MPa
5. Positioner and Solenoid Valve Concepts
Positioner: Precise control device, match air supply pressure and input signal
Solenoid Valve: Quick cut-off/conduct valve, specify model, voltage and interface
Air Regulator (AIR SET): Reduces air source pressure, dimensions L=222, H=455, D=140, D1=100, n-d=4-Φ18
6. Special Requirement Concepts
Special Inspection: Additional inspection requirements for control valve
Copper-Free Requirement: Prohibition of copper materials
Specified Coating Color: Anti-corrosion coating color requirement
Oil and Water Removal: Air source treatment requirement for pneumatic valves
Tropical or Frigid Zone Application: Adaptability to extreme temperature environments
Sand and Dust Proof: Dust-proof structure requirement
High Corrosion Resistance: Resistance to highly corrosive media
High Frequency Operation: Requirement for frequent switching
Open/Close Time: Full opening/closing time requirement
