Ham-Let 1/4" 450 PSI pressure relief valve.
H900HP Series, SS High Pressure Relief Valve, Let-Lok 1/4" x 1/4" Let-Lok, Flourocarbon FKM Seal material, Calibrated to 450 psi, 316 Stainless steel. In the box and unopened. Selling because I overpurchased and no longer need them.
Model:
H900HPSSL1/4B450PSI