06 Apr PGW 103 vs. PGW 104: Choosing the Right Actuator for High-Thrust Infrastructure

When designing large-scale municipal water systems or hydroelectric intake towers, the choice of manual actuation is one of the most critical mechanical decisions in the project lifecycle. Specifying a unit that is undersized leads to mechanical failure; specifying one that is oversized adds unnecessary cost and footprint.

At Pequoig Gear Works, the PGW 103 and PGW 104 represent our high-capacity tier. While they share the same 100% American-made pedigree, their applications are distinct.

The PGW 103: The Precision Workhorse

The PGW 103 Geared Actuator is the most advanced unit in our lineup for standard-to-large-bore gates.

• Max Thrust: 40,000 lbs (Verified by 47,000 lb destructive testing).

• Stem Capacity: Up to 2.50″ Diameter.

• Unique Feature: Patent-Pending Self-Draining Stem Cover.

• Best Use Case: High-humidity wastewater treatment plants or northern climates where ice buildup is a concern.

The 103 is chosen when environmental protection is just as important as raw power. Its multi-ratio gear set (4.5:1 or 6:1) makes it the most versatile choice for the majority of regional infrastructure projects.

The PGW 104: The Extreme-Scale Solution

When a project moves beyond standard sluice gates into the realm of primary reservoir intakes and massive penstocks, the PGW 104 Heavy-Duty Gearbox takes over.

• Max Thrust: Extreme-Capacity (Engineered for the industry’s highest axial loads).

• Stem Capacity: Up to 3.50″ Diameter.

• Unique Feature: Oversized Ductile Iron Housing.

• Best Use Case: Massive diversion gates and large-bore penstocks requiring the industry’s largest stem diameters.

The 104 is the “Heavy-Weight Champion.” It is designed with a massive footprint and reinforced internal gear sets specifically to handle the friction and torque spikes associated with 3.5″ stems.

Technical Comparison Table

Which One Do You Need?

Choose the PGW 103 if: You are managing a critical municipal gate with a stem under 2.5″, you operate in a climate with freeze/thaw cycles, or you require a patent-pending moisture-shedding design.

Choose the PGW 104 if: Your project utilizes oversized stems (up to 3.5″), you are managing a primary regional intake tower, or you require the maximum structural safety factor available in a manual operator.

Regardless of your choice, both units are 100% BABA and AIS compliant, ensuring your project’s federal funding remains secure from submittal to installation.