Jessberger JP-810.35 Air-Operated Diaphragm Pump ½" 35 l/min — ATEX Zone 2

The JP-810.35 is the first ½" model in the JP-810 series and the first with ALU housing — broadening the range to cover solvents, fuels, oils and non-aqueous hydrocarbons. At 35 l/min it is the standard choice for 200L drum emptying where the medium is not compatible with polymer housings. Four housing materials are available: PP, PVDF, ALU and AISI 316, covering the full range from dilute aqueous chemicals through concentrated acids, halogenated solvents and corrosive process fluids.

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-810.35 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 3 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-810.35 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 (air side) 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. ALU (aluminium) is suited to solvents, fuels, oils and non-aqueous hydrocarbons — the standard configuration uses an NBR/Santoprene diaphragm with stainless steel seats. AISI 316 stainless steel covers highly corrosive aqueous media, strong acids and alkalis that attack aluminium, and food or pharmaceutical process fluids — the standard configuration pairs a Hytrel/PTFE composite diaphragm with PTFE balls and stainless steel 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 5 m dry or 9.8 m wet suction lift without manual priming
• Passes solids to 3 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, PVDF, ALU and AISI 316 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: 6 mm
• Max. air pressure: 7 bar
• Fluid connection: ½" BSP
• Max. flow rate: 35 l/min
• Max. delivery head: 70 m
• Suction lift (dry): 5 m
• Suction lift (wet): 9.8 m
• Max. solid passing: 3 mm
• Max. viscosity: 15,000 mPas
• Stroke volume: 65 cm³
• Noise level: 65 dB (at max. air pressure)
• Housing materials: PP, PVDF, ALU, AISI 316

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
• ALU: solvents, fuels, oils, hydrocarbons, non-aqueous media compatible with aluminium
• AISI 316: highly corrosive acids and alkalis, aggressive aqueous media, food and pharmaceutical process fluids

Applications

• Solvent and fuel transfer from 200L drums in ATEX Zone 2 environments — ALU housing
• Chemical drum emptying in production and warehousing operations
• Adhesive, coating and resin supply to production lines
• Transfer of concentrated acids and halogenated solvents — PVDF housing
• Surface treatment chemical dosing in industrial manufacturing
• Process pumping of highly corrosive aqueous media — AISI 316 housing

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 7 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-810.20 — 3/8" BSP, 20 l/min
• Next size up: JP-810.56 — ½" BSP, 55 l/min