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Stainless steel inline ball cone check valve FNPT connections

Apollo

Apollo 6210701 1-1/2" FNPT Stainless Steel Ball Cone Spring Check Valve

SKU CH-M03F-2HA40

Inline ball-cone check valve in stainless steel with FNPT connections, 0.5 psi cracking pressure, EPDM seals, 400 psi water and 150 psi steam ratings, 33 °F to 180 °F range, 316 stainless steel spring

  • Prevents backflow with inline ball-cone mechanism
  • Stainless-steel body handles 400 psi water pressure
  • EPDM seals rated from 33 to 180 °F
  • Spring in 316 stainless steel for corrosion resistance
  • 5 psi cracking pressure suits low-head systems

Apollo 6210701 1-1/2" FNPT Check Valve

The Apollo 6210701 is a stainless steel inline ball cone check valve designed for 1-1/2 inch FNPT connections. It features a 316 stainless steel spring and RPTFE seat with EPDM seals. The valve operates in both horizontal and vertical mounting orientations.

Suits systems needing low cracking pressure

This valve opens at 0.5 psi cracking pressure, making it suitable for low-head applications requiring minimal pressure drop. Builders needing higher pressure ratings beyond 400 psi water or 150 psi steam should look elsewhere. It is not for systems exceeding 180 degrees F or dropping below 33 degrees F.

Fits 1-1/2 inch FNPT piping with inline flow design

The inline ball cone mechanism allows straight-through flow without directional changes in the pipeline. Stainless steel construction frees the system from concerns about rust in aggressive water or chemical environments. The 316 stainless spring maintains consistent closing force across the rated temperature range.

Highlights

  • Prevents backflow with inline ball-cone mechanism
  • Stainless-steel body handles 400 psi water pressure
  • EPDM seals rated from 33 to 180 °F
  • Spring in 316 stainless steel for corrosion resistance
  • 5 psi cracking pressure suits low-head systems

Specifications

BrandAPOLLO VALVES

Questions about this item

What piping must I already have to install the 1-1/2" FNPT check valve?

You need 1-1/2 inch female NPT threaded pipe or fittings on both the inlet and outlet sides so the valve can thread directly onto them.

Will the 0.5 psi cracking pressure let the valve open with a low-head gravity-fed system?

Yes, the spring begins to lift at 0.5 psi, which is low enough for most gravity-fed installations, and the valve mounts in any orientation.

How can I confirm the EPDM seals and RPTFE seat are holding after installation?

Pressurise the line up to the 400 psi water or 150 psi steam rating and check that no fluid passes downstream when flow stops.

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