APOLLO

Water Tanks / Buffer Tanks

APOLLO BF175 / BF250 Stainless Buffer Tanks

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Product overview

APOLLO Stainless Buffer Tank – 175 / 250 Gal (Hydronic Heat Pump Buffer)

High-capacity stainless buffer tanks designed to stabilize hydronic heat pump systems, ensuring smooth operation during low-load conditions and improving efficiency during defrost cycles. Built for durability, flexibility, and long-term performance in residential and commercial applications.

Key Benefits

  • Optimized for heat pump systems to prevent temperature spikes and ensure proper shutdown
  • Supports defrost cycles in winter for improved system efficiency
  • Built with SS316 stainless steel for corrosion resistance and long service life
  • Insulated to reduce heat loss and condensation
  • Available with or without internal coils for system flexibility

Specifications

BF175 – 175 Gallon

  • Volume: 175 gal
  • Material: SS316 (1/16") inner tank / painted galvanized steel (1/32") outer jacket
  • Insulation: 2" polyurethane foam
  • Connections: NPT female
  • Relief Valve: 3/4" CSA/UL rated – 125 psi / 210°F
  • Dimensions: 79" height × 30" diameter

BF250 – 250 Gallon

  • Volume: 250 gal
  • Material: SS316 (1/16") inner tank / painted galvanized steel (1/32") outer jacket
  • Insulation: 1.5" polyurethane foam
  • Connections: NPT female
  • Relief Valve: 3/4" CSA/UL rated – 125 psi / 210°F
  • Dimensions: 85" height × 34" diameter

Additional Features

  • Includes sensor well, drain valve, and pre-installed plugs for easy installation
  • Max Working Pressure: 200 psi
  • Warranty: 10 years

Models and variants

Available model options
ModelAvailable attributes
AP-BF175-NCModel: BF175 / Coil: No Coil
AP-BF250-NCModel: BF250 / Coil: No Coil
AP-BF175-2CModel: BF175 / Coil: Dual Coil
AP-BF250-2CModel: BF250 / Coil: Dual Coil

Specifications

Technical specifications
Volume175 gal / 250 gal
Inner tankSS316, 1/16 in
Outer jacketPainted galvanized steel, 1/32 in
Insulation2 in (BF175) / 1½ in (BF250)
ConfigurationsWithout coil (0C) or with 2 internal coils (2C)
Relief valve¾ in, CSA/UL rated 125 PSI / 210°F
Volume
175 gal / 250 gal
Inner tank
SS316, 1/16 in
Outer jacket
Painted galvanized steel, 1/32 in
Insulation
2 in (BF175) / 1½ in (BF250)
Configurations
Without coil (0C) or with 2 internal coils (2C)
Relief valve
¾ in, CSA/UL rated 125 PSI / 210°F