Y1系列鍛鋼截止閥

Y1 Series

●Size: 1/2"~4"(15mm～100 mm)

●Class: 1500,1690,2500,2680 and 4500

Specifications

●Design: ASME B16.34

●Testing: ASME B16.34 and API 598

●Marking: MSS-SP-25

●Socket weld ends: ASME B16.11

●Butt weld eends: ASME B16.25

●Threaded ends: ASME B1.20.1

Features

●One-piece, forged, bonnetless globe valves eliminate the potential for body-to-bonnet joint leakage, and not require cut or disassemble the bonnet for senvicing.

●65° inclined body reduces pressure drop compared with T-type.

●Splined bushing guides the stem allows quick and easy maintenance by removing all working parts at one time.

●The non-rotating stem hardened and polished to reduce operating torque.

●Linearly instead of helical movement of the non-rotating stem reduces the total friction area between the packing and stem.

●Packing chamber burnished and combination graphite rings individually pre-stressed for tight seal.

●Two-piece glａnd ensures glａnd and packing self-aligning.

●Stellite disc, seat and backseat provide excellent long service life even in severe services.

●Fuly guided disc assures seat and disc precise alignment in spite of side thrust caused by high velocilyflow, and prevents stem from scoring and galing, and provides longer disc seal and body life.

●Double orifice design Protects seating faces because part of the erosive flow energy dissipates through disc.

●Two flat slots design at the interal bottom of the disc prevent the disc from rotating,so avoid high-speed rotating disc and seat contact damage to disc and seat

●Large clearance between stem and disc allows disc to move freely.

●Dust cover and sleeve protect stem threads from dirt, dust and sand.

●Fully enclosed stem driving lubrication system with two needle roller bearings ensures low operating torque.

●Upper stem position indicates if valve is open or closed.

●Optional live-loading packing, disc springs keep packing tight for long periods of time without maintenance.

●Stop, regulating, and stop check discs are available.

●Handwheel is rugged and knobbed to make sure the grip even when wearing gloves.

●Optional handwheel colors are available.