Centrifugal pump Atmos TERA-SCH-HE series

waterfor potable waterfor industrial water

Overview
The Atmos TERA-SCH-HE is an axially split case centrifugal pump designed for reliable continuous operation and energy‑efficient transport of large volume flows across extensive distribution networks.

Main benefits

• Reliable continuous duty for efficient drinking water supply and large-scale distribution systems.
• Reduced energy costs through high overall hydraulic efficiency.
• Simplified alignment with optional tolerant coupling and motor adjustment device.
• Quiet-running hydraulics with low vibration and reduced noise for improved operational reliability.
• Optimised NPSH behaviour to reduce cavitation tendency.
• Compact design to save installation space.
• Optional certified drinking-water version and optional Ceram CT coating (approved for drinking water) — Ceram CT can increase efficiency by up to ~3%.
• Standard volume flow up to 18,000 USgpm (≈4,100 m³/h).

Design
Pump with axially split housing mounted on a welded base frame; available as single-stage split-case centrifugal design.

Applications

• HVAC systems
• Municipal and industrial water supply
• Process and utility systems

Type key (example and key attributes)
Example: Wilo-Atmos TERA-SCH-HE-10x6x16/MS/100/4/208-230/460V~3 ODP

• Brand Name: Wilo
• Product Family: Atmos TERA-SCH-HE
• Suction (inlet) flange: 8"–20" (example: 10")
• Discharge (outlet) flange: 6"–16" (example: 6")
• Impeller diameter max: up to 16" (example)
• Seal: Mechanical seal (MS) or packed seal (PS)
• Motor poles: 4-pole or 6-pole
• Voltage options: 3~208-230/460V 60 Hz or 3~575V 60 Hz
• Enclosure: ODP or TEFC

Technical data (summary)

• Fluid temperature: 18°F to 248°F (≈ -8°C to 120°C); for gland packed seal max 212°F (≈100°C)
• Ambient temperature: -4°F to 104°F (≈ -20°C to 40°C)
• Maximum operating pressure: 175 PSI (≈12 bar) or 232 PSI (≈16 bar) depending on design
• Standard volume flow: up to 18,000 USgpm (≈4,100 m³/h)
• Typical nominal diameters (examples): suction 8"–20"; discharge 6"–16"
• Mains connection options: 3~208-230/460V, 60 Hz or 3~575V, 60 Hz

Materials

• Pump housing: ASTM A48 Class 35 grey cast iron
• Pump shaft & shaft sleeve: ASTM A276 GR. 410 stainless steel
• Impeller: ASTM A743 Gr.CF8 stainless steel
• Mechanical seal: Carbon / Silicon Carbide / EPDM (E1)
• Gland packed seal: 20% GF PPE & PS with graphited cotton packing

Construction

• Axially split casing for easy access to hydraulics and maintenance; single-stage configuration standard.
• Available delivery options: pump end only (bare shaft), pump with base/coupling/guard, or complete assembly with motor.
• Shaft sealing by mechanical seal or stuffing box packing.
• 4-pole and 6-pole motor options; NEMA ODP and TEFC frames.
• Welded steel base frame for rigid installation.

Scope of delivery

• Pump end only (bare shaft)
• Pump, base, coupling and coupling guard
• Complete assembly (pump, base, coupling, guard and motor)
• Installation and operating instructions

Series / Performance information
Family curves and performance charts available for selection. Standard volume flow up to 18,000 USgpm (≈4,100 m³/h) depending on configuration.

Characteristics / technical specifications

• Series: Atmos TERA-SCH-HE (axially split case pump)
• Fluid temperature range: 18°F to 248°F (≈ -8°C to 120°C)
• Ambient temperature range: -4°F to 104°F (≈ -20°C to 40°C)
• Max operating pressure: 175 PSI (≈12 bar) or 232 PSI (≈16 bar)
• Seal options: Mechanical seal (MS) or packed seal (PS)
• Nominal suction diameters: 8"–20"; nominal discharge diameters: 6"–16"
• Motor options: 4-pole / 6-pole; enclosure ODP or TEFC
• Optional Ceram CT coating and drinking-water certified versions available