Torque Alignment Nut And Installation Tool

Abstract

A fluid flow control device includes a valve body defining an inlet, an outlet, a throat disposed between the inlet and the outlet, and a bonnet opening, a control element having a valve plug and an elongated stem coupled to the valve plug, an extension bonnet coupled to the bonnet opening, a bellows disposed in the extension bonnet, and a bellows nut threaded onto the stem to secure the bellows in the extension bonnet and form a seal around the stem. The bellows nut includes a first surface, a second surface, a throughbore extending between the first surface and a second surface receiving thestem, and a tapered channel extending from the first surface toward the second surface. The tapered channel comprises a first width formed by the first surface and a second width that is greater thanthe first width for receiving a tool and facilitating placement.

Description

technical field [0001] The present disclosure relates generally to a fluid flow control device, and more particularly to a system for installing and removing a bellows nut from a fluid flow control device. Background technique [0002] In many types of fluid flow control devices and assemblies, extension members are used to position sensitive mechanisms at a safe distance from potentially hazardous environments. For example, a regulator and / or valve may use an extended bonnet to move an actuator component (eg, an actuator housing) a safe distance from extreme temperatures that can often exceed 450 degrees Fahrenheit. These extended bonnets may typically include sealing mechanisms such as bellows to provide enhanced sealing around the valve stem and other components. [0003] Bellows nuts are commonly used to secure the bellows in the extended bonnet. Generally, considerable torque (eg, about 250 pounds per foot (lb.-ft.) or greater) is required to secure the bellows nut to...

AI Technical Summary

Problems solved by technology

For example, the edges of nuts and tools may be easily deformed or rounded if the parts are not aligned precisely

With parts not properly aligned, the tool may slip and cause damage

In addition, multiple people are often required to maintain proper alignment in order to ensure that parts can be used multiple times, resulting in reduced efficiency and greater operator cost and investment

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