FieldEngineersKitMechanical
Rotating equipment, torque, and mechanical clearance calculators.
Valve Cv Sizing Calculator
ISA/IEC US Cv screening for liquid and gas: Q, P1/P2 gauge, SG, and catalog Cv,sel headroom check.
Bolt Torque & Tensioning
ASME PCC-1 flange bolt torque lookup: B16.5 studs, moly T_table (K=0.13), K/grade scaling, and Round 1–4 star sequence.
Flange Bolt Tightening Sequence
Free online flange bolt tightening sequence generator. View interactive star pattern diagrams and tightening passes for 4 to 64 bolt flanges per ASME PCC-1.
Blind Flange Thickness
Calculate ASME B31.3 / VIII-1 UG-34 flat blind thickness t = d × √(0.3P / SE) + c from diameter, design pressure, and corrosion allowance.
Pump NPSH & Cavitation
Mechanical pump NPSHa / cavitation margin calculator. Screen available NPSH vs OEM NPSHr for water, seawater, condensate, and light hydrocarbons (HI 9.6.1 · ASME B73.1 · API 610).
Total Dynamic Head (TDH) & Pump Power
Pump TDH and brake horsepower calculator. Screen Hs + Hf + Hp, BHP = Q·TDH·SG/(3960·η), and IEC/NEMA motor rating recommendations (HI 14.3 screening).
Pump Affinity Laws & Impeller Trimming
Pump affinity laws and impeller trim calculator. Predict Q₂, H₂, P₂ from speed (VFD) or diameter cut with D₂/D₁ trimming limit warnings for TA / shutdown reviews.
Pump Minimum Continuous Stable Flow (MCSF) & Thermal Protection
API 610 / HI 9.6.1 pump MCSF calculator. Compare thermal and hydrodynamic minimum continuous flow, estimate shut-off power, ΔT, ARC valve Cv, and bypass NPS.
Multiple Pump Parallel & Series Operation
HI 14.3 parallel and series pump calculator. Intersect quadratic pump and system curves for Q_op, H_op, flow/head gain, and runout warnings.
Flange Bolt & Wrench Size Quick Lookup
ASME B16.5 / B18.2.2 heavy-hex wrench AF, stud diameter, bolt count, BCD pitch, and stud length quick lookup for field spanner / socket selection.