Macon Controls OPSK Steam Kit

The Macon Controls OPSK One Pipe Steam Kit is a field-proven solution designed for the precise thermostatic control of individual radiators in one-pipe steam heating systems. As an experienced contractor, you know that balancing these systems is notoriously difficult; the OPSK steam valve assembly simplifies this by utilizing a non-electric, self-acting thermostatic operator that regulates steam flow based on ambient room temperature. The kit features a nickel-plated forged brass valve with a 1/8-inch NPT connection, making it compatible with standard radiator vent tappings. By integrating a vacuum breaker and a high-capacity radiator air vent, the OPSK minimizes the large temperature swings and "banging" often associated with steam heat. This modulating steam control ensures that the radiator only heats when necessary, providing significant energy savings and improved occupant comfort without requiring any electrical wiring or external power sources.

Key Benefits for HVAC Professionals

• Optimized System Balancing: Allows for individual room temperature regulation, preventing the common issue of over-heating in rooms near the boiler.
• High-Durability Construction: Features a stainless steel spindle and EPDM disc for long-term reliability in high-temperature steam environments up to 248°F.
• Streamlined Installation: The 1/8" NPT straight pattern design fits directly into existing vent tappings, allowing for upgrades without repiping the radiator supply.
• Energy Efficiency: Helps reduce fuel consumption by up to 30% by automatically throttling steam flow once the setpoint is reached.
• Maintenance-Friendly: Thermostatic actuators and valve inserts can be replaced or serviced without a full system shutdown.

Common Questions Regarding the OPSK Kit

Does this kit eliminate the need for a main boiler control?
No. The Macon OPSK regulates individual radiation units, but the boiler must still be cycled via a primary pressure control or master thermostat to ensure proper condensate return and prevent flooding.

What is the maximum operating pressure for this assembly?
The OPSK steam kit is most effective within a pressure range of 0 to 1.5 PSI. It is recommended that system pressure does not exceed a maximum of 2 PSI for optimal modulating performance.

Can I use this on a system without existing air vents?
The OPSK must be used in conjunction with atmospheric steam air vents. This kit includes a vacuum breaker and vent to assist in air elimination and condensate drainage, which are critical for one-pipe operation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.