Power Section Specification
212-3435
2.125" 3:4 Lobes 3.5 Stages
Rotor Specifications
Overall Length 90.13 in
Avg. Diameter 1.038 in
Contour Length 86.00 in
Eccentricity 0.129 in
Major Diameter 1.297 in
Head Diameter 1.500 in
Head Length 4.13 in
Weight 23 lb
Thread Form M16-Mfg only
Stator Specifications
Overall Length 95.25 in
Tube OD 1.75 in
Contour Length 85.00 in
Tube ID 5.125 in
Rubber Cut-back
Side 1: 5.12 in
Side 2: 5.12 in
Weight 35 lb
Material Alloy Steel
Performance Specifications
Flow Range 63-126 GPM
Rev per Unit Volume 6.95 Rev/Gal
Speed Range 437-875 RPM
No Load Pressure Loss 159 psi
  XTH RTP
Max Rec Press 780 psi 710 psi
Torque @ Max Press 320 ft-lbs 300 ft-lbs
Stall Pressure 1,180 psi 1,070 psi
Stall Torque 490 ft-lbs 440 ft-lbs
Stator Minors and Fit (in) at 70°F
  RTP XTH
Group Minor Fit Minor Fit
4 1.053 -0.015 1.053 -0.015
Reline Lengths (in) Max 95 Min 89 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 500 Torque (ft-lb) 0
Fit Increase
Change in Temperature (°F) 0 100 200 300 Fit Increase (in) 0
Speed
Differential Pressure (psi) 0 500 Speed (RPM) 0 1,000
Mechanical Power
Differential Pressure (psi) 0 500 1,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 100 200 300 400 500 600 700 800 900 Torque (ft-lb) 0 100 200 300 400
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.02 0.04 0.06
Speed
63 GPM 95 GPM 126 GPM Differential Pressure (psi) 0 200 400 600 800 Speed (RPM) 0 200 400 600 800 1,000
Mechanical Power
63 GPM 95 GPM 126 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 Mechanical Power (hp) 0 10 20 30 40 50
©2026 NOV. All rights reserved. Except as noted, all trademarks referenced in this document are trademarks of NOV. Performance curves describe theoretical performance with 175°F (79°C) water and are for reference only. Operational fit and drilling conditions will affect performance. Operation above maximum recommended limits will reduce life. Specification data are subject to change without notice.
PS App v.