Sporlan OZE-50-GA Thermostatic Expansion Valve – 175 kW / 50 Ton, R410A

Sporlan OZE-50-GA is an externally equalized thermostatic expansion valve (TXV) for R410A refrigerants. With a nominal capacity of 175 kW (≈50 tons), it regulates the liquid feed to the evaporator according to the suction line superheat. It has a GA thermostatic charge, and thanks to its external equalizer connection it opens correctly even in evaporators with a high pressure drop.

Sporlan TXV: The Reference Valve in the Field

• 175 kW nominal capacity — verify your selection in the Sporlan capacity table for your evaporating/condensing conditions.
• Externally equalized: The design required for evaporators with a distributor and long coils.
• Replaceable power element: On Sporlan bodies the thermostatic head can be renewed separately; the charge is changed without removing the body.

Technical Specifications and Installation Notes

• Model: Sporlan OZE-50-GA | Type: TXV, externally equalized
• Capacity: 175 kW / ≈50 tons (nominal)
• Refrigerant: R410A | Charge: GA
• Connection: Inlet 1 1/8" / Outlet 1 3/8" — ODF solder

• 🔧 Mount the sensing bulb on the suction line at the 3-4 o'clock position, clamp it tightly and insulate it; a loose bulb makes the valve overfeed.
• Connect the external equalizer line 15-20 cm downstream of the bulb, on top of the suction line.
• Cool the body with a wet cloth during soldering — the power element charge is damaged by heat.
• Do not move the superheat setting far from the factory value; in case of instability, first check the refrigerant charge and bulb contact.