The Sporlan 109522, technically cataloged as the FVE-1-ZP expansion valve, is a high-performance thermostatic expansion valve (TXV) designed for precision refrigerant metering in small-capacity systems. Built with a rugged brass bar stock body, this external equalizer expansion valve features 1/4" x 1/2" SAE flare connections and 1/2-ton to 1-ton nominal capacity for R-22 and high-pressure R-404A/R-507 applications. The ZP thermostatic charge is engineered specifically with a Maximum Operating Pressure (MOP) limit to prevent motor overload during high-load startup, making it the standard choice for refrigeration system maintenance and heat pump service. This 109522 is a direct drop-in for the FVE-1-ZP-2X4SAE-30, utilizing a 30-inch capillary tube for flexible bulb placement. This HVACR replacement part ensures consistent superheat control, protecting the compressor from liquid slugging while maximizing evaporator efficiency across varying load conditions. Key Benefits: MOP Charge Protection: The ZP thermostatic charge provides a critical pressure limit to protect compressors from overloading during pull-down or high-load conditions. Precision Metering: Features a stainless steel diaphragm and welded element construction for high-strength, leak-proof performance and accurate superheat regulation. Field Serviceable: Designed with a removable 50-mesh inlet strainer and accessible internal parts for straightforward cleaning and inspection by service technicians. Durable Construction: The brass bar stock body and silver-soldered joints provide maximum protection against corrosion and erosion in demanding environments. Simplified Installation: Standard 1/4" x 1/2" SAE flare fittings allow for quick connection without the need for brazing in sensitive areas. Common Questions: Where should the external equalizer be installed for this valve? For the Sporlan 109522, the external equalizer line must be connected to the suction line immediately downstream of the sensing bulb to ensure the valve accurately senses the pressure at the evaporator outlet. Is the superheat on the FVE-1-ZP adjustable? Yes, as a standard Type F valve, the 109522 features an adjustable superheat stem protected by a bottom hex seal cap, allowing for fine-tuning based on specific system load requirements. Can the ZP charge be used as a general replacement for a standard C charge? No. The ZP charge is specifically intended for applications requiring a pressure limit (MOP). Using it in systems designed for a conventional "C" charge may lead to insufficient refrigerant flow if the pressure limit is reached prematurely. 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.
