Honeywell HON402 Pressure Regulator with HON625 Gas Pressure Regulator, DN50 Flange, Class 150, Suitable for Municipal Use, Power Plants, and Industrial Stations
Brand: Honeywell
Model: HON402HOT
Attached (or accompanying) model: HON625
Connection size: DN50 flange
Flange rating: Class 150
Flow medium: Gas
Application scope: Municipal areas, power plants, and industrial stations
Description
The gas pressure regulator Honeywell HON 402, often paired with the HON 625 regulator, is a sophisticated device designed for precise control of gas pressure in various applications. The flow diagram illustrates the internal structure and components of the HON 402 regulator with outlet expansion and the HON 625 regulator. Key components include the setpoint adjuster, setpoint spring, pilot stage, throttle, fine mesh filter, measuring line, pressure stage, loading pressure line, start-up valve, bleed line, throttling diaphragm, closing spring, and foamed materials.
Applications
The HON 402 gas pressure regulator is suitable for a wide range of applications, including:
- Municipal consumers, power plants, and industrial stations
- Suitable for gases in accordance with DVGW Worksheet G 260 and neutral, non-aggressive gases; other gases upon request
Characteristics
The regulator boasts several key features that make it ideal for these applications:
- Large inlet pressure range
- Diaphragm valve acts as the final control element
- Available with safety shut-off valve (SSV)
- CE mark according to the Pressure Equipment Directive (PED)/GAD
- Composed of few parts, easy to maintain, and operates quietly
- Approved as an equipment component of gas consumption devices in accordance with the EC Gas Equipment Directive
Technical Specifications
Max. Permissible Pressure (PS)
- 25 bar integral overpressure protection (IS) with regulator HON 625
- 40 bar integral overpressure protection (IS) with regulator HON 630/630-1
Setpoint Spring Specifications
The setpoint spring specifications for the HON 625 regulator are as follows:
| Regulator HON 625 | Spring No. | Wire Ø (mm) | Colour Coding | Specific Setting Range (Wds) |
|---|---|---|---|---|
| LP Measuring Unit | 1 | 2.5 | Cream White | 0.02 bar to 0.06 bar |
| 2 | 3.5 | Green | 0.04 bar to 0.18 bar | |
| 3 | 4 | Red | 0.07 bar to 0.35 bar | |
| 4 | 5 | Blue | 0.3 bar to 0.5 bar | |
| HP Measuring Unit | 5 | 4 | Red | 0.3 bar to 1 bar |
| 6 | 5 | Blue | 0.5 bar to 2 bar | |
| 7 | 5.5 | No Colour | 1 bar to 3.5 bar | |
| 8 | 6 | Silver | 2 bar to 5 bar |
Minimum Pressure Drop (Δpmin)
- Difference between inlet and outlet ≥ Δp 0.5 bar
Material Composition
- Main valve housing: Ductile iron GJS/cast steel GS
- Internal parts of main valve: Steel/Al alloy
- Pilot: Steel/Al alloy
- SSV control device: Steel/Al alloy
- Diaphragms: Rubber plastics (NBR, ECO)
- Seals: Rubber plastics (NBR)
Valve Specifications and Flow Rate Coefficient
The valve specifications and flow rate coefficient for the HON 402 regulator are detailed below:
| Valve Specifications | Inlet/Outlet | Flow Rate Coefficient KG*in (m³/h)/bar |
|---|---|---|
| HON 402 with DNᵤ = DNd (without outlet expansion) | DN 25 / DN 25 (only ductile iron GJS) | 350 |
| DN 50 / DN 50 | 1300 | |
| DN 80 / DN 80 | 3500 | |
| DN 100 / DN 100 | 5200 | |
| HON 402 with outlet expansion | DN 50 / DN 100 | 1500 |
| DN 80 / DN 150 | 3800 | |
| DN 100 / DN 200 | 5500 |
Type of Connection
- Body made of ductile iron GJS: DIN flanges PN 16, PN 25, Class 150 according to ANSI 16.5
- Body made of cast steel GS: DIN flanges PN 16, PN 25, PN 40, and Class 150 and Class 300 according to ANSI 16.5
Accuracy Class and Closing Pressure Group
The accuracy class and closing pressure group for the HON 625 regulator are as follows:
| Pd Range | Accuracy Class AC | Lock-up Pressure Class SG |
|---|---|---|
| 0.02–0.03 bar | 10 | 30 |
| >0.03–2.5 bar | 5 | 10 |
| >2.5–5 bar | 1 | 10 |
Additional information
| Brand |
Honeywell |
|---|
