Koolance ADT-N38M-G14F Threading Adapter, NPT 3/8 Male to G 1/4 Female Single fitting threading adapter, from NPT 3/8 (male) to G 1/4 BSPP (female). Additional Specifications &bullet; Materials: Brass, Nickel Plating, EPDM &bullet; Max Temperature: 120&deg;C (248&deg;F) &bullet; Max Pressure @ 25&deg;C: 15kgf/cm2 (213.4psi).