Adjustable. Secure. Anti-Freezing.

HA4AM

The HA4AM can be ordered “less motor,” which includes control module, cam, and motor-mounting bracket. A three port bonnet with blanking plugs is standard on the HA4AM (up to 4²/100 mm port) so that other pilots can be field installed if required.

The “M” feature can also be ordered with other valve combinations, most commonly the HA4ADM Dual Pressure Regulator with motorized pilot. All material Features for the HA4A modular pressure regulator apply to the HA4AM.

Adjusts for varying load conditions.
Welded bracket motor mount provides secure, stable mounting.
Quad ring seal prevents moisture leakage into the stem area, eliminating the possibility of freezing.
Quad ring eliminates the packing nut, preventing the possibility of over-tightening the nut.
Interchangeable and direct replacement for Parker R/S A4AM Modutrol valves.

HA4AM

Construction

The motor mount on the Hansen electric motor compensated regulator is of superior design. Unlike designs with “legs,” the HA4AM has a solid, welded bracket motor mount. This design provides a sturdy and stable base that will not flex or warp with motor torque or temperature changes.

The control module stem is a quad-ring-seal design. The quad ring is more flexible and durable over time than stem packing or O-rings, which means continuous protection against condensation inside the control module. If present, this condensation may freeze, making the regulator inoperative. In addition, the stainless steel nut holding the motor bracket to the control module is machined in a way to help direct any condensation away from the control module stem, preventing possible freezing problems. The control module shaft also has a roller bearing that rides on the cam, allowing smooth operation with little wear over time.

Operation

The regulator inlet pressure setting changes as the motor receives a signal from a controller, such as a thermostat or PLC. The rotation of the motor is
transmitted through a cam to the control module stem, and then to the control module range spring connected to the top of the control module diaphragm.

PENN MOTOR

• NEMA 2/IP 52, NEMA 3/IP 64 with optional weather-resistant cover
• 24VAC power input
• 4–20 mA or 135 ohm control signal input (specify)
• 270° of rotation, factory-set at midpoint
• Ambient temperature range: –40°F/–40°C to +125°F/+50°C

HONEYWELL MOTOR

• NEMA 3/IP 64, NEMA 4/IP 65 with optional weatherproofing kit
• 4–20 mA control signal input, 120VAC or 230VAC power input. (This motor includes a transformer, the controller transformer must be supplied.)
• 135 ohm control signal input, 24VAC power input
• 160° of rotation, factory set at midpoint
• Ambient temperature range: –40°F/–40°C to +150°F/+65°C

Support: (800) 426-7368

HA4AM

Construction

Operation

PENN MOTOR

HONEYWELL MOTOR

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