Globe Valve

Overview

	Size / Design Variable	Diameter
	Costing Variable (Built-in Model)	Diameter
	Costing Variable (User-Defined Model)	Diameter in cm
	Emissions Port	No
	Hosts	Liquid Pressure Drop in a Globe Valve Procedure Gas Pressure Drop in a Globe Valve Procedure

A Globe Valve is used to represent an equipment resource used to control the flow of liquids and gases flowing through it. The procedure can be executed in a batch or continuous mode.

Globe Valve: Equipment Tab

See Gate Valve: Equipment Tab.

Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable	Default Value	Range

◙ Diameter The diameter of the valve.	5.0 cm	Positive
◙ Max Diameter The maximum diameter that a unit of this type is available for purchase in the market.	38.10 cm	Positive
● Flow Capacity The fully open flowing capacity of the valve.	250.0 Cv	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Sizing: Design Mode

In Calculate (Design Mode), the user specifies the Maximum Diameter and the system computes the Number of Units and the Diameter. See also Liquid Pressure Drop in a Globe Valve: Modeling Calculations and Gas Pressure Drop in a Globe Valve: Modeling Calculations.

Sizing: Rating Mode

In User-Defined (Rating Mode), the user specifies the Number of Units and the Diameter.

Costing

Equipment purchase cost is based on the diameter and the material of construction. It is supplied by the built-in model assuming as material of construction SS316.