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buffer tank

JPSW 900 · G5 · Ecoline Vlies silver

Efficiency Class C

JPSW Type 900 - G5, assembled, silver · Includes 100 mm fleece insulation

Item No. 840450

  • Assembled tank
heat loss
141 W
Standby loss
3.38 kWh/24 h
ErP Volume
887
Weight
122 kg
Tank 1789001 Delivery time: approx. 6–10 weeks
Insulation 9727900 In stock
Total Delivery time: approx. 6–10 weeks

As of Oct 28, 2026

Request for 840450

EAN 4250659515011

Average of JPSW Type 900 - G5, assembled, silver

Dimensions and weights

H 2,090 Ø 990
Ø with insulation
990 mm
Ø without insulation
790 mm
Height including insulation
2,090 mm
Height without insulation
2,040 mm
tilt height
2,085 mm
Weight
122 kg
Insulation thickness
100 mm

Connections

No connections have been specified for this tank yet.

Technical Specifications

Volume

nominal capacity
887

Print

Operating pressure of storage tanks
4.5 bar
Test pressure of the storage tank
7.8 bar

insulation

Insulation thickness of the jacket (assembled)
100 mm
Insulation thickness of the jacket (raw)
115 mm
Insulation thickness of the lid
100 mm
Insulation color
silver
Lambda
0.0388 W/mK
Bulk density
1800 g/m²
Fire rating
B2 according to DIN 4102

Energy (ErP)

ErP Class
C
ErP - Heat loss (W)
141 W
ErP – Heat Loss (kWh)
3.38 kWh
ErP - Contents
887

specification text

JPSW JPSW ENERGY BUFFER TANK, incl. insulation

Buffer tank for all hot water central heating systems. Suitable for: solid-fuel and oil-fired boilers, heat pumps, solar systems, and gas or electric instantaneous water heaters. Manufactured from high-quality S235JR steel in accordance with EN 10025 and EC Directive 97/23/EC. Exterior anti-corrosion coating; interior left unfinished. Includes a sensor core tube for variable positioning of the sensors within the tank’s fluid.

Nominal capacity
887 L
Max. operating pressure of the storage tank
4.5 bar
Test pressure of the storage tank
7.8 bar
Minimum pressure in the storage tank
+0 bar
Max. operating temperature
95°C
Min. temperature
20 °C

Features

  • 5x 2" socket (system connection on the right)
  • System connections at the top and bottom
  • Equipped with a miter pipe for
  • Klöpper bottom oriented toward the
  • Flow stabilization and
  • Volume utilization
  • 1 x 1½" socket (air vent)
  • 4 x ½" socket (thermometer)
  • 1 x " socket (drain)
  • 1 x 1" socket (for 2.5-conductor system)

The system connection ports are spaced 90° apart.

Insulation Details

Material
Polyester fiber nonwoven
Insulation color
Silver
Insulation thickness of the jacket (assembled)
100 mm
Lambda
0.0388 W/mK
Fire rating
B2 according to DIN 4102
Temperature Resistance
110 °C
Bulk density
1800 g/m²
Includes 50 mm floor insulation
ErP Class
C
ErP - Heat loss (W)
141 W

Dimensions with insulation

  • 990 x 2090 (Ø x H) mm
Manufacturer
Juratherm GmbH
Match Code
JPSW 900 G5 silver

Assembly consisting of

  • JPSW Type 900 - G5
  • Fleece insulation Type 900
Weight
~122 kg
Tilt height
2085 mm
EAN13
4250659515011

Composition

Product video

JPSW 900 · G5 in motion