Calculate globe valve stem thrust, operating torque and handwheel rim force for low-in-high-out (DDJGC/XDJGC) and high-in-low-out (GJDC) flow configurations.
Globe valves operate under three distinct flow configurations, each with different force models. Using the wrong formula leads to actuator mis-sizing — either the valve won't close under differential pressure, or the actuator is needlessly oversized. This calculator applies the correct thrust model for each configuration and shows every intermediate force component.
DDJGC (low-in-high-out, DN>=50, coeff 1.15), XDJGC (DN<50, coeff 1.50) and GJDC (high-in-low-out, coeff 1.00).
Separates seat closing force, piston effects, packing friction and stem resistance — results are fully traceable.
Built-in metric and imperial thread database with auto-populated stem coefficients (RM/RM').
High-in-low-out (GJDC) uses a distinct formula: F_open = dP*S*1.05 - f2*0.8 + f3, F_close = f1*0.25 + f2 + f3 - f5.
Automatic F0/M0 with 30% safety margin for actuator data sheet specification.
Normal and impact rim forces per MSS SP-91 — verify operator effort compliance.
Choose DDJGC (low-in, DN>=50), XDJGC (low-in, DN<50) or GJDC (high-in-low-out).
Input seat bore d, DN, handwheel D, and inlet/outlet pressures P1/P2.
Select from 60+ metric and imperial thread specs — stem data fills automatically.
All intermediate forces, thrust, torque, selection values and handwheel forces appear immediately.
Enter your valve parameters below and get instant stem thrust, operating torque and handwheel force results.