Comparison : Item # H410OPABR1/43PSI, H400-OPA Series, Brass Adjustable Check Valve, 1/4” Female BSPT Thread x 1/4” Female BSPT Thread
Item # H410OPABN1/43PSI, H400-OPA Series, Brass Adjustable Check Valve, 1/4” Female NPT Thread x 1/4” Female NPT Thread
Item # H410OPASSR1/43PSI, H400-OPA Series, SS Adjustable Check Valve, 1/4” Female BSPT Thread x 1/4” Female BSPT Thread
Item # H410OPASSN1/43PSI, H400-OPA Series, SS Adjustable Check Valve, 1/4” Female NPT Thread x 1/4” Female NPT Thread