Image may not reflect selected features Parker PGI Valve, Mini, 1/4in MNPT, SS SKU: V-554SDT Please Login to See Price Quantity discounts available QuantityPrice Quantity -+ Description Miniature Mini Valve. 1/4" MNPT x 1/4" MNPT. Soft Seat with .136" Orifice Size. ASTM A479-316 Stainless Steel Body, Acetal Resin Seat Material. Details Throttling and shut-off design. Interchangeable between soft or metal seats. Easily replaced. DescriptionDetails Back Miniature Mini Valve. 1/4" MNPT x 1/4" MNPT. Soft Seat with .136" Orifice Size. ASTM A479-316 Stainless Steel Body, Acetal Resin Seat Material. Back Throttling and shut-off design. Interchangeable between soft or metal seats. Easily replaced.