Fisher CS800 Series Regulators
About Fisher CS800
The Fisher CS800 Series direct-operated, spring-loaded regulators are designed for pressure-reducing applications in commercial and light industrial installations. This series offers high flexibility with a wide range of body sizes, end connections, outlet pressure settings, and orifice options, and supports internal or external pressure registration to suit diverse installation needs. In addition, the CS800 Series provides multiple overpressure protection options to ensure safe and stable operation. These regulators are validated for hydrogen-containing gas service, supporting blends up to 25% hydrogen, and can be adapted for 100% hydrogen service under specific conditions, ensuring reliable sealing and material compatibility.
Key Features
Flow-Optimized Disks: Maximize system flow efficiency
Comprehensive Overpressure Protection: Multiple options to meet different application safety requirements
Versatile Body Sizes & End Connections: Compatible with various piping standards
Durable Materials: Body options include gray cast iron, ductile iron, and steel
Accurate Pressure Control: Fixed Factor / Pressure Factor Measurement (PFM)
Easy Maintenance: Only standard tools required for pressure adjustment and orifice removal
Hydrogen Compatibility: Suitable for hydrogen blends up to 25%, ideal for emerging energy applications
Technical Specifications
|
Parameter |
Specification |
|
Body Sizes & End Connections |
1-1/4", 1-1/2", 2" NPT (Threaded) |
|
Maximum Allowable Inlet Pressure |
Emergency: 175 psig / 12.1 bar |
|
Maximum Outlet Control Pressure (Emergency) |
15 psig / 1.0 bar |
|
Differential to Avoid Internal Damage |
3 psig / 0.21 bar above outlet set pressure |
|
Orifice Sizes |
1/4" (6.4 mm), 3/8" (9.5 mm), 1/2" (13 mm), 5/8" (16 mm), 3/4" (19 mm), 7/8" (22 mm), 1" (25 mm), 1-3/8" (35 mm) |
|
Outlet Pressure Range |
3.5 in. w.c. to 10 psig / 9 to 0.69 bar |
|
Pressure Registration |
Internal or External (External Connection: 3/4" NPT) |
|
Operating Temperature |
-20 to 150°F / -30 to 66°C |
|
Capacity |
Up to 36,270 SCFH / 974 Nm³/h |
|
Approximate Weight |
Threaded: CS800/820 25 lb / 11 kg |
Fisher CS800 Series Model Comparison Table
|
Model / Type |
Key Features |
Overpressure Protection |
Pressure Control |
Flow Capacity |
Additional Features |
Typical Applications |
|
CS800IQ |
High-capacity relief direct-operated regulator |
High-capacity relief for sudden overpressure |
Fixed Factor / Pressure Factor Measurement (PFM) |
High flow capacity |
Hydrogen blend compatible |
Commercial and light industrial applications, pressure regulation and safety protection |
|
CS803 |
Regulator with True-Monitor™ protection |
True-Monitor™ provides reliable overpressure monitoring |
Fixed Factor / PFM |
Standard CS800 flow |
Real-time monitoring and fault indication |
Safety-critical systems, pressure monitoring applications |
|
CS804IT |
Regulator with Integral functionality |
Built-in overpressure protection |
Fixed Factor / PFM |
Standard CS800 flow |
Integrated design for simplified installation |
Applications requiring compact, integrated regulators |
|
VSX8 |
Slam-Shut module |
Quick shut-off to prevent overpressure or leakage |
Modular, independent pressure control |
Works with CS800 series |
Emergency fast-shut-off device |
High-safety systems or emergency shut-off scenarios |
Notes:
CS800IQ is ideal for high-flow and high-capacity relief applications.
CS803 provides monitoring capabilities, suitable for systems requiring remote or automated supervision.
CS804IT features an integrated design, simplifying installation.
VSX8 is a modular safety accessory designed to work with the CS800 series for emergency fast shut-off.
Why Choose Fisher CS800
The CS800 Series combines durability, flexibility, and ease of maintenance, making it ideal for users seeking high reliability, safety, and stable performance. Whether handling natural gas or hydrogen-containing gas blends, the Fisher CS800 provides a reliable, efficient, and safe pressure control solution, helping your system operate smoothly and consistently over the long term.
Our Company Advantages
We specialize in supplying Fisher original regulators and spare parts, guaranteeing all products are brand new, unused, and factory-sourced. We provide an 18-month warranty and professional technical support to assist customers whenever needed. Our flexible logistics and shipping options ensure your order arrives quickly and safely. By choosing us, you benefit from high-quality products, excellent service, and peace of mind, helping your industrial systems run efficiently and reliably.
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