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Chicago Valves series 25 Stainless Steel Ball Valve, 1000 CWP NPT RPTFE 1/4"-2"
2566R1
The Chicago Valves Series 25 is an industrial-grade max 1000 CWP 316 stainless steel ball valve featuring a 2-piece full port design and an integrated ISO 5211 direct-mounting pad for seamless actuator coupling.
Built and tested to ASME B16.34 standards, it is constructed from durable cast 316 stainless steel. Features a high-cycle live-loaded PTFE stem packing system, anti-static design, and highly reliable RTFE seat. It is rated for steam service up to 150 PSI WSP, vacuum service to 29” Hg, and operating temperatures from -50°F to 450°F (-46°C to 232°C), manufactured with threaded NPT ends to ASME B16.11.
Available in sizes from 1/4" to 2".
Please Note: This valve is supplied with a bare stem by default for direct actuation; a lever handle is optionally available.
Valve Automation: This valve can also be purchased pre-paired and tested with pneumatic actuators as a complete automated package, saving you critical field assembly and testing time.
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The Chicago Valves Series 25 is an industrial-grade max 1000 CWP 316 stainless steel ball valve. Conforming to ASME B16.34, this 2-piece full port valve is designed for high-performance fluid control, isolation, and modulating automation services. The integrated direct-mounting pad (ISO 5211) allows for the direct installation of pneumatic or electric actuators without the need for brackets or couplings, minimizing hysteresis and saving critical installation space.
The Series 25 is available from 1/4" to 2" with threaded NPT ends.
General Valve Specification
- Valve Type: 316 Stainless Steel Ball Valve (2-Piece)
- Port Design: Full Port
- Pressure Class: 1000 CWP (Cold Working Pressure)
- Steam Rating: 150 PSI WSP (Saturated Steam)
- Temperature Range: -50°F to 450°F / -46°C to 232°C
- Vacuum Rating: 29" Hg (Direct Mounted)
- Body Material: 316 Stainless Steel (ASTM A351 CF8M)
- End Piece Material: 316 Stainless Steel (ASTM A351 CF8M)
- Seat Material: RTFE (Reinforced PTFE)
- Stem Material: 316 Stainless Steel
- Body Seal Material: PTFE
- Thrust Washer Material: Carbon Filled PTFE
- Stem Packing Material: PTFE
- Gland Flange Material: 304 Stainless Steel
- Gland Bolt Material: 300 Series Stainless Steel
- Travel Stopper Material: 304 Stainless Steel
- Handle Material: 304 Stainless Steel (Optional)
- Operation: Bare Stem (Lever Handle Optional)
- Body Style: 2-Piece, Direct Mount
- Stem Design: High-Cycle Live-Loaded
- Flow Function: Isolation / Flow Control
- End Connections: Threaded NPT (ASME B16.11)
- Country of Origin: China
Standards and Compliance
- Design: ASME B16.34
- Testing: ASME B16.34 (Shell & Seat testing)
- Thread Standard: ASME B16.11 (NPT to ASME B1.20.1)
- Mounting Pad Standard: ISO 5211
- Safety/Design: Anti-Static Design
Actuation and Automation Options
For automated flow control systems, this valve can be purchased pre-assembled and tested with pneumatic actuators as a complete package, saving you valuable field assembly, pressure testing, and configuration time. Contact us for custom automated valve packages.
Summary Specifications of Chicago Valves Series 25 NPT
Size Part Number Cv ISO 5211 Brk Torque
(ibf-in)Weight (lbs) 1/4" 2566R1002 6 F03-F04 40 1.21 3/8" 2566R1004 7 F03-F04 40 1.12 1/2" 2566R1005 10 F03-F04 40 1.06 3/4" 2566R1006 25 F03-F04 80 1.32 1" 2566R1010 35 F04-F05 110 2.01 1 1/4" 2566R1012 46 F04-F05 160 2.76 1 1/2" 2566R1015 80 F05-F07 240 4.74 2" 2566R1020 110 F05-F07 300 6.97 - 2566R1
Data sheet
- Valve Type
- Ball Valve
- Valve Size
- .5 (1/2") .25 (1/4") .75 ( 3/4") .375 (3/8") 1" 1.5 (1 1/2") 1.25 (1 1/4") 2"
- Valve Temperature Range
- -50° to 450°F (°C -46 to 232)
- Valve Body Material
- Stainless Steel 316L
- Valve Body Style
- Full Port
- Valve Connection
- FNPT
- Valve PSI
- 1000
- Valve Body Type
- 2 Pieces
- Valve Configuration
- 2-Way
- Valve Seat
- RTFE
- Warranty
- 1 year
- Valve Standards
- ASME B16.11 ASME B16.34 ISO 5211
The Chicago Valves Series 25 is an industrial-grade max 1000 CWP 316 stainless steel ball valve featuring a 2-piece full port design and an integrated ISO 5211 direct-mounting pad for seamless actuator coupling.
Built and tested to ASME B16.34 standards, it is constructed from durable cast 316 stainless steel. Features a high-cycle live-loaded PTFE stem packing system, anti-static design, and highly reliable RTFE seat. It is rated for steam service up to 150 PSI WSP, vacuum service to 29” Hg, and operating temperatures from -50°F to 450°F (-46°C to 232°C), manufactured with threaded NPT ends to ASME B16.11.
Available in sizes from 1/4" to 2".
Please Note: This valve is supplied with a bare stem by default for direct actuation; a lever handle is optionally available.
Valve Automation: This valve can also be purchased pre-paired and tested with pneumatic actuators as a complete automated package, saving you critical field assembly and testing time.