The Fisher LS200 Series Direct-Operated Regulators are engineered for high-capacity, reliable pressure control in natural gas distribution and industrial applications. Designed with a balanced port and optional integral slam-shut, the LS200 ensures precise regulation and safety for furnaces, boilers, burners, and district stations. Its ease of maintenance, requiring only 15 minutes for a disc change, and compatibility with up to 25% hydrogen blending make it a sustainable and future-ready solution. Certified to EN334, EN14382, and DVGW, the LS200 delivers industry-leading performance with minimal environmental impact.
| Parameter | Specification |
|---|---|
| Body Sizes | Gray Iron: 2x2 DN50x50 (NPT, 125FF), 2x4 DN50x100 (125FF); Ductile Iron/Steel: 2x2 DN50x50 (NPT, PN16, 150RF), 2x4 DN50x100 (PN16, 150RF) |
| Operating Inlet Pressure | LS220: 125 psi (8.6 bar) for set points <10 psi, 284 psi (19.6 bar) for set points >10 psi; LS250: 284 psi (19.6 bar) |
| Maximum Emergency Inlet Pressure | 284 psi (19.6 bar) |
| Maximum Emergency Outlet Pressure | Medium Pressure: 50 psi (3.44 bar); High Pressure: 150 psi (10.34 bar) |
| Spring Ranges (LS220/LS224, 350mm) | Light Green: 4.35–5.1 psi (0.3–0.35 bar); Pink: 4.35–10.6 psi (0.3–0.73 bar); Dark Blue: 4.8–15.7 psi (0.33–1.08 bar); Orange: 8.3–21.75 psi (0.57–1.5 bar) |
| Spring Ranges (LS250/LS254, 255mm) | Pink: 20–30.3 psi (1.38–2.09 bar); Dark Blue: 20–44.8 psi (1.38–3.09 bar); Orange: 25–60 psi (1.72–4.14 bar) |
| Temperature Ratings | -20°C to +66°C (Non-PED); -20°C to +60°C (PED); Functionally tested to -40°C |
| Pressure Registration | External |
| Certifications | DVGW, V9, CRN, EN334, EN14382, 25% H2 Blending Approved |
| Hydrogen Compatibility | Validated for 25% H2 blending; contact Emerson for 100% H2 details |
The Fisher LS200 Series Regulators are designed for high-capacity pressure control in critical applications:
Its design allows a disc change in under 15 minutes with one person, minimizing downtime.
Yes, it is validated for up to 25% hydrogen blending, with testing for 100% compatibility.
The optional integral slam-shut shuts off gas flow during overpressure or underpressure events, preventing system failures.
It is certified to DVGW, V9, CRN, EN334, EN14382, and approved for 25% hydrogen blending.
Yes, it is functionally tested to -40°C, ensuring reliability in extreme conditions.
For more information about the Fisher LS200 Series Regulators, pricing, or to request a demo, contact our team:
