Rosemount Hagan 4x5 Torque Power Positioner

Fits valves, dampers, and feed mechanisms that need a floor-mounted Hagan pneumatic torque power positioner — 80° shaft rotation, 240 ft-lb stall torque at recommended 100 psig supply, with pneumatic or 4–20 mA input options.

Key advantages

Type — Hagan pneumatic power positioner, 4×5 econo torque, floor mounted.
Motion / torque — 80° shaft rotation (torque type); stall 240 ft-lb (325 N·m) at recommended 100 psig supply.
Input — 3–15, 3–27, 0–30 psig and 4–20 mA.
Air — Supply 45–120 psig; recommended 100 psig; consumption 0.4 scfm free air.
Dynamics — Full stroke 2 seconds or less (unloaded); repeatability 1.0% of full stroke.

Typical applications

Damper and valve actuation needing ~240 ft-lb stall torque at 100 psig.
Floor-mounted Hagan 4×5 econo torque installs replacing legacy power positioners.
Loops with 3–15 / 3–27 / 0–30 psig pneumatic setpoints or 4–20 mA via I/P option.
Feed mechanisms requiring ≤2 s unloaded full stroke and ~1% repeatability.

Selection guide

Torque budget — Stall 240 ft-lb (325 N·m) at 100 psig; max friction load 30 ft-lb (41 N·m) — size load below friction limit.
Air supply — 45–120 psig; recommended 100 psig; lock available plant air before RFQ.
Temperature — 40–170°F (4–77°C).
Options — Manual brake, air lock, limit switches, heater, I/P, position transmitter, fail-safe.
Weight / mount — Unit weight ~60 lb (27 kg); floor-mounted torque type — confirm foundation and shaft interface.

Common mistakes

Undersizing air supply — recommended 100 psig; operable 45–120 psig; stall torque is stated at 100 psig.
Ignoring max friction load 30 ft-lb — stall torque is not continuous friction capacity.
Leaving I/P / position transmitter / fail-safe options blank when the loop is 4–20 mA or needs feedback.
Expecting a compact rack-mount servo — this is a ~60 lb floor-mounted Hagan power positioner.

When to RFQ / what to tell us

Load torque/friction, required shaft rotation (80° class), and available air pressure.
Input type (3–15 / 3–27 / 0–30 psig vs 4–20 mA), and options (brake, air lock, limit switches, heater, I/P, position transmitter, fail-safe).
Quantity, ship-to, shaft interface / foundation notes.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	42071
Brand	Rosemount
Model	4x5 Torque Type Power Positioner
Product type	pneumaticpowerpositioner
Positioner Type	Hagan pneumatic power positioner, 4×5 econo torque, floor mounted
Output Motion	80° shaft rotation (torque type)
Stall Torque	240 ft-lb (325 N·m) at recommended 100 psig supply
Max Friction Load	30 ft-lb (41 N·m)
Repeatability	1.0% of full stroke
Full Stroke Time	2 seconds or less (unloaded)
Input Signal	3–15, 3–27, 0–30 psig and 4–20 mA
Air Supply	45–120 psig; recommended 100 psig
Air Consumption	0.4 scfm free air
Temperature Limit	40–170°F (4–77°C)
Unit Weight	~60 lb (27 kg)
Options	Manual brake, air lock, limit switches, heater, I/P, position transmitter, fail-safe

Documents

Rosemount Hagan pneumatic power positioners product data (PDF)

FAQ

Q: What torque is available? A: Stall torque 240 ft-lb (325 N·m) at recommended 100 psig supply; max friction load 30 ft-lb (41 N·m).

Q: Which input signals? A: Pneumatic 3–15, 3–27, 0–30 psig and 4–20 mA (I/P option) per OEM product data.

Q: What should I send for a quote? A: Torque/friction, air supply, input type, options, quantity, ship-to. Compatible with systems using Rosemount Hagan 4×5 — we do not claim authorized-dealer status.