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Check Valves

558 Series Check Valve

This threadless, cartridge-style, one-way valve is designed for installation into metal manifolds. The valve features The Lee Company’s field-proven locking end which provides secure retention without the need for threads, O-rings or sealants. Featuring an all-stainless steel design with a high-quality metal seat, the valve offers low leakage, repeatable cracking pressures, and long life. Models are available with an integral safety screen for increased protection against contamination and a ceramic ball. The valve is 100% performance tested.

Key Product Facts
  • Mounting Configuration:Insert - Into Metal
  • Diameter:5.47 mm
  • Lohm Rate:As low as 250 Lohms
  • Maximum Working Pressure:280 Bar
  • Valve Seat Type:Metal to Metal

Product Information

General Performance
Characteristic UNSCREENED SCREENED
Lohm Rate 250 Lohms 400 Lohms
Leakage at 172 kPa (25 psid) on Air 10 SCCM (max) 10 SCCM (max)
Maximum Working Pressure, Checked Direction 280 Bar 280 Bar
Maximum Working Pressure Differential, Flow Direction 40 Bar 40 Bar
Screen Size N/A 125 micron
Installation Force 625 kgf (max) 625 kgf (max)
Materials
COMPONENT MATERIAL
Body 303 Stainless Steel
Cage 305 Stainless Steel
Pin 416 or 303 Stainless Steel
Spring 302 Stainless Steel
Ball 440C Stainless Steel or Ceramic
Screen 316 Stainless Steel
Flow Curves
Cross Section Views
Dimensional Views
Installation Hole Details

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
Filter Part Numbers
Flow Direction
Cracking Pressure
Part Number
Flow Direction
Lohm Rate
Cracking Pressure
Screen Included Ball Material Pin Material Installation Hole DRAWING NUMBER Request Information
CCFM2550200S Forward 250 Lohms 0 kPa (No Spring) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550204S Forward 250 Lohms 4 ± 3 kPa (0.6 ± 0.4 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550207S Forward 250 Lohms 7 ± 5 kPa (1 ± 0.7 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550214S Forward 250 Lohms 14 ± 5 kPa (2 ± 0.7 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550225S Forward 250 Lohms 25 ± 10 kPa (3.6 ± 1.5 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550240S Forward 250 Lohms 40 ± 15 kPa (6 ± 2.2 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2550269S Forward 250 Lohms 69 ± 17 kPa (10 ± 2.5 psid) No 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCRM2550200S Reverse 250 Lohms 0 kPa (No Spring) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550204S Reverse 250 Lohms 4 ± 3 kPa (0.6 ± 0.4 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550207S Reverse 250 Lohms 7 ± 5 kPa (1 ± 0.7 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550214S Reverse 250 Lohms 14 ± 5 kPa (2 ± 0.7 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550225S Reverse 250 Lohms 25 ± 10 kPa (3.6 ± 1.5 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550240S Reverse 250 Lohms 40 ± 15 kPa (6 ± 2.2 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCRM2550269S Reverse 250 Lohms 69 ± 17 kPa (10 ± 2.5 psid) No 440C Stainless Steel 416 Stainless Steel 1INST002604S Request
CCFM2553000S Forward 400 Lohms 0 kPa (No Spring) Yes 440C Stainless Steel 416 Stainless Steel 1INST007226S Request
CCFM2553014S Forward 400 Lohms 14 ± 5 kPa (2 ± 0.7 psid) Yes 440C Stainless Steel 303 Stainless Steel 1INST007226S Request
CCFM2553040S Forward 400 Lohms 40 ± 15 kPa (6 ± 2.2 psid) Yes 440C Stainless Steel 303 Stainless Steel 1INST007226S Request
CCFM2553069S Forward 400 Lohms 69 ± 17 kPa (10 ± 2.5 psid) Yes 440C Stainless Steel 303 Stainless Steel 1INST007226S Request
CCRM2553000S Reverse 400 Lohms 0 kPa (No Spring) Yes 440C Stainless Steel 416 Stainless Steel 1INST002681S Request
CCRM2553014S Reverse 400 Lohms 14 ± 5 kPa (2 ± 0.7 psid) Yes 440C Stainless Steel 416 Stainless Steel 1INST002681S Request
CCRM2553040S Reverse 400 Lohms 40 ± 15 kPa (6 ± 2.2 psid) Yes 440C Stainless Steel 416 Stainless Steel 1INST002681S Request
CCRM2553069S Reverse 400 Lohms 69 ± 17 kPa (10 ± 2.5 psid) Yes 440C Stainless Steel 416 Stainless Steel 1INST002681S Request
CCFM2550800S Forward 250 Lohms 0 kPa (No Spring) No Ceramic 416 Stainless Steel 1INST007226S Request
CCFM2550814S Forward 250 Lohms 14 ± 5 kPa (2 ± 0.7 psid) No Ceramic 416 Stainless Steel 1INST007226S Request
CCFM2550840S Forward 250 Lohms 40 ± 15 kPa (6 ± 2.2 psid) No Ceramic 416 Stainless Steel 1INST007226S Request
CCRM2550800S Reverse 250 Lohms 0 kPa (No Spring) No Ceramic 416 Stainless Steel 1INST002604S Request
CCRM2550814S Reverse 250 Lohms 14 ± 5 kPa (2 ± 0.7 psid) No Ceramic 416 Stainless Steel 1INST002604S Request
CCRM2550840S Reverse 250 Lohms 40 ± 15 kPa (6 ± 2.2 psid) No Ceramic 416 Stainless Steel 1INST002604S Request
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