Jessberger JP-810.8 Air-Operated Diaphragm Pump ¼" 7 l/min — ATEX Zone 2

The JP-810.8 is the most compact model in the Jessberger JP-810 AODD pump series — designed for controlled, low-volume transfer where precision matters more than throughput. At 7 l/min and ¼" BSP connections, it fits naturally into laboratory benches, analytical environments and small-batch production lines where a full-sized pump would be oversized. Three housing materials are available: PP, POM and PVDF, covering reagent-grade aqueous chemicals, food-contact and fuel-compatible media through to concentrated oxidising acids.

Purpose

The AODD operating principle means compressed air alternates between two chambers, driving a pair of flexible diaphragms back and forth. No electric motor contacts the fluid zone — making the JP-810.8 inherently safe for flammable and explosive media classified for ATEX Zone 2. The pump is fully self-priming, can run dry without damage and handles media containing suspended solids up to 2 mm. For applications involving high-viscosity media that require pre-heating before transfer, the pump pairs well with a HeatXperts drum heater to reduce viscosity to pumpable levels. Where stricter Zone 1 certification is required, the JP-810.8 Conductive version with carbon-filled housing is available as a separate product.

Selecting your housing

Housing selection determines chemical compatibility and dictates the standard internal configuration. All three housings for the JP-810.8 use an NBR/PTFE composite diaphragm with PTFE ball valves — the housing material and seat material differ by choice. PP is the all-round choice for acids, alkalis and most aqueous media — standard configuration uses PP seats. PVDF handles highly aggressive media including strong oxidising acids and halogenated solvents that would compromise PP — standard configuration uses PVDF seats. POM (polyoxymethylene) offers good resistance to fuels, oils, hydrocarbons and alcohols where PP is not suitable — standard configuration uses POM seats. Contact us for configuration advice specific to your medium and operating conditions.

Key features

• AODD operating principle — no electrical components in the fluid path, inherently safe for flammable media
• Dry-running capable — no mechanical seal, no damage if air supply continues with empty chamber
• Self-priming — pulls liquid from 3 m dry or 9.8 m wet suction lift without manual priming
• Passes solids to 2 mm — ball-check valve design tolerates particulate media
• Adjustable flow and delivery head via inlet air pressure — no frequency inverter required
• Non-lubricated air operation — no oil separator required in the air supply line
• Separable manifold — allows two different media to be pumped simultaneously
• Easy field maintenance — modular design, standardised spare parts kit available
• Available in PP, POM and PVDF housing — matched diaphragm and seat configuration per material

Certification & Approvals

• ATEX Zone 2 gas: II 3/3 G Ex h IIC T4 Gb
• ATEX Zone 2 dust: II 3 D Ex h IIIB T 135°C Db X
• CE marked

Technical Specifications

• Drive: compressed air (non-lubricated)
• Air connection: 4 mm
• Max. air pressure: 6 bar
• Fluid connection: ¼" BSP
• Max. flow rate: 7 l/min
• Max. delivery head: 60 m
• Suction lift (dry): 3 m
• Suction lift (wet): 9.8 m
• Max. solid passing: 2 mm
• Max. viscosity: 5,000 mPas
• Stroke volume: 18 cm³
• Noise level: 62 dB (at max. air pressure)
• Housing materials: PP, POM, PVDF

Typical media by housing

• PP: dilute acids, alkalis, detergents, aqueous chemical solutions, water treatment chemicals
• PVDF: concentrated acids, oxidising agents, halogenated solvents, aggressive cleaning agents
• POM: fuels, oils, hydrocarbons, alcohols, non-aggressive solvents

Applications

• Transfer of reagents, solvents and acids in laboratory and R&D environments
• Small-batch pharmaceutical compounding and filling in ATEX Zone 2 settings
• Analytical dosing — controlled, low-flow transfer of hazardous or reactive media
• Quality control sampling from small containers and cans
• Filling vials, bottles and small vessels where precise, adjustable output is required
• Offshore and process industry applications requiring a compact, intrinsically safe pump

Operational Requirements

• Air supply must be clean, dry and non-lubricated — do not use lubricated air (damages internal seals)
• Inlet air pressure must not exceed 6 bar — operating above rated pressure reduces diaphragm life
• Can be run dry without damage — no minimum flow requirement
• Ensure fluid connection piping is adequately supported — do not use the pump housing as a pipe anchor
• If the pump is stalled (air on, no flow), the diaphragm is under constant load — avoid prolonged stall conditions
• Verify chemical compatibility for the specific medium and temperature before commissioning

JP-810 Series — Other Sizes

• Next size up: JP-810.20 — 3/8" BSP, 20 l/min