Sporlan 100390 BFS-AA-C Expansion Valve

The 100390 Sporlan BFS-AA-C Expansion Valve is a technical-grade thermostatic expansion valve (TXV) engineered for rigorous commercial refrigeration and air conditioning service. Designed for R404A systems, this valve features balanced port construction, which ensures precise refrigerant metering by isolating the pin and port from varying head pressures. This design is essential for maintaining stable evaporator superheat across a capacity range of 1/4 to 1/3 ton, particularly in applications with widely fluctuating ambient conditions.

Constructed with a heavy-duty machined brass body and a stainless steel diaphragm, the BFS series utilizes a knife edge to metal joint for a leak-proof seal. The internal equalizer and 2x4 SAE flare connections facilitate a streamlined installation on liquid lines. With a 30-inch capillary tube and an orange-coded Type C thermostatic charge, this valve provides the rapid response required to prevent liquid slugging and optimize coil efficiency in medium and low-temperature systems.

• Balanced Port Design: Eliminates the influence of pressure drop variations, ensuring consistent superheat control.
• Internal Equalization: Simplifies piping by removing the need for an external equalizer line on smaller evaporators.
• Durable Brass Body: Features a 100-mesh removable inlet strainer to protect the internal orifice from system debris.
• Field Serviceable: The welded element and internal components are accessible for cleaning or inspection.

What is the primary application for the Sporlan 100390?
This valve is specifically calibrated for R404A systems in small-capacity commercial refrigeration units, such as reach-in coolers or ice machines requiring 1/4 to 1/3 ton capacity.

How do I adjust the superheat on this BFS model?
The valve is externally adjustable via the bottom stem. Turn clockwise to increase superheat (decrease flow) and counter-clockwise to decrease superheat (increase flow).

Does this valve include a strainer?
Yes, it includes a factory-installed 100-mesh removable strainer to prevent contaminants from fouling the port alignment.

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.