2-Way Manifold
A 2-way manifold is a simple valve system used with gauge or absolute pressure transmitters. It has two valves:
- Isolation Valve – Allows or blocks process pressure from reaching the transmitter.
- Vent/Drain Valve – Used to release trapped pressure or drain the system.
✅ Application: Used for direct pressure measurement, calibration, and maintenance.
5-Way Manifold
A 5-way manifold is designed for differential pressure transmitters. It consists of five valves:
- Two Isolation Valves – One for the high-pressure side and one for the low-pressure side.
- Two Equalization Valves – Used to balance the pressure between the high and low sides.
- One Vent/Drain Valve – Releases trapped pressure for calibration or maintenance.
✅ Application: Used in flow measurement, tank level monitoring, and applications requiring accurate differential pressure readings.
Key Differences:
| Feature | 2-Way Manifold | 5-Way Manifold |
|---|---|---|
| Number of Valves | 2 | 5 |
| Main Purpose | Isolating and venting a single pressure source | Managing differential pressure measurement |
| Used With | Gauge/absolute pressure transmitters | Differential pressure transmitters |
| Typical Applications | Direct pressure measurement, calibration | Flow measurement, tank level monitoring |
Summary:
- 2-way manifolds are simple and used for isolation and venting in single pressure measurements.
- 5-way manifolds are more complex and used with differential pressure transmitters for balancing, venting, and accurate readings.