Jessberger JP-810.120 Air-Operated Diaphragm Pump 1" 120 l/min — ATEX Zone 2

The JP-810.120 steps up the JP-810 series to 1" BSP connections and 120 l/min — chosen when ¾" pipework is the bottleneck and sustained high-volume transfer is required. It handles the same 25,000 mPas viscosity ceiling as the JP-810.90, making it equally suited to thick resins, heavy adhesives and high-viscosity process fluids in large-scale IBC and bulk tank operations. Four housing materials are available: PP, PVDF, ALU and AISI 316, each paired with a matched internal configuration for diaphragm, ball valves and seats.

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-810.120 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 4 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-810.120 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. 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 4 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: 3/8" BSP
• Max. air pressure: 8 bar
• Fluid connection: 1" BSP
• Max. flow rate: 120 l/min
• Max. delivery head: 80 m
• Suction lift (dry): 5 m
• Suction lift (wet): 9.8 m
• Max. solid passing: 4 mm
• Max. viscosity: 25,000 mPas
• Stroke volume: 200 cm³
• Noise level: 72 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

• High-volume IBC emptying and bulk tank transfer in chemical and petrochemical production
• Large-scale transfer of heavy resins, thick adhesives and polymers requiring 1" pipework
• Sustained production-rate solvent and fuel supply — ALU housing for hydrocarbon media
• High-flow chemical dosing and filling in pharmaceutical and fine chemical manufacturing
• Process supply to reactors, mixing vessels and large storage tanks
• Offshore and industrial operations requiring high throughput with ATEX Zone 2 certification

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-810.90 — ¾" BSP, 100 l/min
• Next size up (ALU): JP-810.160 — 1" BSP, 170 l/min, ALU
• Next size up (PP/PVDF): JP-810.171 — 1" BSP, 170 l/min, PP/PVDF