Description

Fisher Type S402Y Pressure Reducing Regulator
✅🔹 Product Overview
The Fisher S402Y Pressure Reducing Regulator is engineered for low-pressure gas systems where precise and stable outlet control is critical.
It is specially designed to handle very small pressure ranges, making it suitable for pilot lines, instrumentation systems, and sensitive downstream equipment.
With color-coded orifice options and compact construction, S402Y allows engineers to fine-tune flow and pressure without complex system modification.
✅🔹 Key Performance Advantages
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Designed for low outlet pressure applications
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Multiple orifice sizes with color identification
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Prevents internal damage under pressure fluctuations
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Stable performance in small-flow systems
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Simple installation and maintenance
✅🔹 Typical Applications
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Pilot gas supply systems
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Instrument air and control lines
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Small burner gas systems
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Laboratory gas equipment
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Secondary pressure regulation units
Especially suitable for projects where standard regulators are too rough for delicate control requirements.
✅Specifications
| Item | Specification |
|---|---|
| Body Size | 3/4 NPT |
| Max Inlet Pressure | 125 psig / 8.6 bar |
| Emergency Inlet Pressure | 175 psig / 12.1 bar |
| Outlet Range | 4.2 in.w.c to 2.5 psig |
| Max Casing Pressure | 10 psig / 0.69 bar |
| Orifice Size | 1/8″, 3/16″, 1/4″ |
| Temperature | -29°C to 71°C |
✅🔹 For Engineering & Purchasing Teams
Low-pressure control failures often cause unstable operation and frequent system adjustments.
Our S402Y regulators are carefully selected, tested, and matched to your working conditions—helping you reduce commissioning time and long-term maintenance costs.
We also support orifice and range selection for your specific application.

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