Yarway 3484-R 1-1/2 1007469

The seatless blow-off valve is a sliding plunger type, opened and closed by means of a hand wheel and non-rising stem and sealed against leakage by packing rings above and below the ports. This valve is provided with heavy coil compression springs under the yoke nuts. Designed to help prevent leaking when the valve is open, yoke nuts are screwed down evenly and tightly placing compression on the springs and the packing rings. Ample flow area is provided in the hollow plunger, absence of projections or pockets prevents accumulation of scale and sediment that can impede flow and shorten the life of the valve. Annular space in the body permits pressure to surround the plunger, making the valve a fully balanced unit easy to operate at high pressures. For complete protection of the packing, the valve has a long stroke plunger so that the packing is never exposed to the mainstream flow. The gland and plunger have double inlet ports to balance flow pressures. This valve is available in angle or straightway styles, cast iron or steel construction and flanged ends.

Yarway Type B Straight Way Seatless Blow-Off Valve, 1-1/2 in Nominal, NPS Connection, Flanged End, 200 psi, 250 lb Pressure Class, 11 in Inlet to Outlet Length, 16 in Top to Inlet Center, 2, Iron Body, Stellate Seat, Stainless Steel Stem, Steel Disc, Graphite/PTFE Packing, Iron Handle, Handwheel Operator, 30 Cv Flow Coefficient (Cv), ASTM A126, ASTM A395 Material Standard

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Yarway_T3948_3928_2_Catalog.pdf