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OS & Y Needle Valve

Introduction

The OS & Y (Outside Screw & Yoke) Needle Type Valve Model is a precision valve designed for accurate flow control in various industrial applications. Featuring an outside screw and yoke design, this valve allows for smooth operation and fine adjustment of flow rates, making it ideal for regulating fluid and gas flow in high-precision systems. The needle valve mechanism provides a sharp-pointed needle that tightly controls flow through a small orifice, offering excellent flow regulation and shut-off capability.

The outside screw design ensures that the valve stem remains clean and free from contaminants, while the yoke provides a sturdy support structure for the valve, making it durable and reliable for demanding applications. These valves are typically used in systems requiring accurate flow control and where space constraints or safety concerns necessitate tight, reliable regulation.

Design Features

  • Investment case yoke is formed by precision casting which enhances strength and perfect stem alignment.
  • Standard non-rotating free swivel stem tip.
  • Upper stem thread lubricant is isolated from system fluid.
  • Non-rotating lower stem avoid galling damage to the seat and tip, as well as reduces the total friction area between the packing and lower stem.
  • Back seating design provides secondary stem sealing and prevents stem blowout.
  • Adjustable gland flange allows packing adjustment.
  • Stem packing below thread design prevent media contamination and thread lubrication washout.
  • Pressure rating upto 10,000 psig (690 Bar)
  • Temperature rating are as follows: PTFE: -65°F to 450°F (-54°C to 232°C) Graphite: -65°F to 1200°F (-54°C to 649°C)

Material of Construction

No.ComponentMaterial of Constructions
1.BodySS316 SS316LCarbon steel A105DuplexInconel 625
2.Lower Bonnet
3.Packing Bolt
4.Stem TipSS316 SS316L
5.Stem
6.Washer
7.HandleSS316
8.Lock Nut
9.Locking pin
10.CapPVC
11.ScrewSS 316
12.PackingPTFE Graphite

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