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The Chicago Valves Series P484F1 is Class 150 Flanged piston check valve engineered to prevent reverse flow in industrial systems. Manufactured from ASTM A105N forged steel a bolted bonnet design, ASTM A276 Type 410 stainless steel disc, the valve utilizes a piston-style check design to provide reliable automatic backflow prevention in demanding service environments.
Its bolted bonnet construction enhances pressure containment and long-term serviceability, while NACE MR0175 compliance supports use in sour service applications.
Available in sizes from 1/2" to 1 1/2" and also offered in a Class 300 configuration - P484F3.
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The Chicago Valves Series P484F1 is engineered for automatic reverse-flow prevention in Class 150 industrial piping systems. Manufactured to API 602 / ISO 15761 standards and tested to API 598 requirements, the valve combines forged steel construction with a piston check design to deliver dependable performance in process, utility, and energy applications where reliable non-return service is critical.
The P484F1 is available from 1/2" to 1 1/2" and is also offered in a Class 300 configuration (Series P484F3).
General Valve Specification
- Valve Type: Piston Check Valve (2-Way)
- Body Material: Forged Steel ASTM A105N (Standard)
- Disc Material: ASTM A276 Type 410 Stainless Steel
- Operation: Automatic
- Bonnet Design: Bolted Bonnet
- Flow Function: Non-return / backflow prevention
- Service Type: Unidirectional flow service
- Pressure Rating: ASME Class 150 (285 PSI @ 100°F / 38°C)
- Maximum Temperature: 850°F (454°C)
- End connections: Class 150 Flanged
- Country of Origin: Cambodia.
Standards and Compliance
- API 602 / ISO 15761, API 598, ASME B16.10, ASME B16.5, NACE MR0175
Summary Specifications of Chicago Valves Series P484F1 Class 150
Size 1/2" 3/4" 1" 1 1/4" 1 1/2" CV 2 2.90 6.20 10 15 Weight (lbs) 4.75 6.50 9.25 11 18 - P484F1
Data sheet
- Valve Type
- Piston Check
- Valve Size
- .5 (1/2") .75 ( 3/4") 1" 1.5 (1 1/2") 1.25 (1 1/4")
- Valve Temperature Range
- -50° to 600°F (°C -46 to 316)
- Valve Body Material
- Forged Steel A105N
- Valve Body Style
- Flanged Piston Check Valve
- Valve Connection
- Class 150 Flanged
- Valve PSI
- 285
- Valve Configuration
- 2-Way
- Valve Seat
- Metal on Metal
- Warranty
- 1 year
- Valve Standards
- API 598 API 602 ASME B16.5 ASME B16.10 NACE MR0175


