Jessberger JP-810.171 Air-Operated Diaphragm Pump 1" 170 l/min — ATEX Zone 2

The JP-810.171 is the PP/PVDF variant of the JP-810.170 platform — a 1" AODD pump delivering 170 l/min for transfer of aggressive aqueous chemicals, acids, alkalis and halogenated solvents at high volume. At 35,000 mPas and 7.5 mm solid passing, it handles both highly viscous media and slurry-laden streams that exceed the capacity of the smaller 1" model. Where ALU housing is required at the same flow and performance level, see the JP-810.160.

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-810.171 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 7.5 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-810.171 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. PP is the all-round choice for acids, alkalis and most aqueous media — the standard configuration pairs a Hytrel diaphragm with PTFE balls and PP seats. PVDF handles highly aggressive media including strong oxidising acids and halogenated solvents that would compromise PP — the standard configuration uses a Santoprene/PTFE composite diaphragm with PTFE balls and PVDF seats. Contact us for configuration advice specific to your medium and operating conditions. For solvent, fuel and hydrocarbon applications requiring ALU housing at the same flow rate, see the JP-810.160.

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 5 m dry or 9.8 m wet suction lift without manual priming
• Passes solids to 7.5 mm — large-bore ball-check design handles heavily loaded or slurry 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 and PVDF housing — matched diaphragm and seal 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: ½" BSP
• Max. air pressure: 8 bar
• Fluid connection: 1" BSP
• Max. flow rate: 170 l/min
• Max. delivery head: 80 m
• Suction lift (dry): 5 m
• Suction lift (wet): 9.8 m
• Max. solid passing: 7.5 mm
• Max. viscosity: 35,000 mPas
• Stroke volume: 700 cm³
• Noise level: 75 dB (at max. air pressure)
• Housing materials: PP, PVDF

Typical media by housing

• PP: dilute and concentrated acids, alkalis, detergents, aqueous chemical solutions, water treatment chemicals
• PVDF: concentrated oxidising acids, halogenated solvents, aggressive cleaning agents, media incompatible with PP

Applications

• High-volume transfer of aggressive aqueous chemicals from IBCs and bulk tanks in ATEX Zone 2 environments
• Large-scale chemical dosing and process supply in chemical and pharmaceutical manufacturing
• Transfer of concentrated acids and oxidising agents at production rate — PVDF housing
• Slurry and suspended-solids handling — 7.5 mm passing diameter accommodates heavily loaded media
• Water treatment — high-flow dosing of process chemicals and coagulants
• Offshore and industrial operations requiring high-throughput ATEX-certified transfer of aqueous media

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 8 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
• Note: the PVDF product image shows the Conductive (black) version — the Standard PVDF pump is supplied in grey housing.

JP-810 Series — Other Sizes

• One size smaller: JP-810.120 — 1" BSP, 120 l/min
• Same flow, ALU housing: JP-810.160 — 1" BSP, 170 l/min, ALU
• Next size up (PP/PVDF/SS): JP-810.252 — 1¼" BSP, 250 l/min, PP/PVDF/SS