Flagship Product

Yamada AODD Diaphragm Pump

Air-operated double-diaphragm pump for aggressive, viscous, and slurry fluids. Stock ready in Bekasi, parts on the shelf, sale & rental across Indonesia.

Authorized distributor Yamada Pump Capacity 30 - 1,000 lpm Available in Indonesia

We Share What We KnowMon - Fri 08:00 - 17:00 WIBBekasi, Indonesia

The AODD (Air-Operated Double-Diaphragm) pump is a positive-displacement pump driven by compressed air. Two diaphragms alternately push the fluid with no electric motor, no mechanical seal, and no rotating part touching the process fluid. Yamada AODD handles critical fluid transfer - acids, solvents, fuel oil, slurry, viscous liquids - in chemical, pharmaceutical, automotive, and mining plants.

ATEX-safeNo electric motor, no spark
Run-dry tolerantWill not damage when the tank goes empty
Self-priming to 5 mDry suction lift up to 5 metres
Viscous to 50,000 cPParticles up to 12 mm

Yamada AODD pump anatomy

Six main components that drive cost, performance, and fluid compatibility on a diaphragm pump:

Yamada AODD main component diagram: pump body in/out manifold and chamber, center body, diaphragm, and check valve — Pump body (in/out manifold + chamber), center body, diaphragm, and check valve. Port size sets capacity; body and diaphragm material set fluid compatibility.

How the Yamada AODD works, layer by layer

Scroll to watch the Yamada AODD diaphragm cycle from the inside: two diaphragms alternating, the air spool flipping, and fluid flowing through ball check valves - all without an electric motor.

01 · No electric motor

AODD is driven by compressed air, not electricity.

Two diaphragms alternately push the fluid. No motor, no rotating shaft, no mechanical seal. Safe for ATEX-classified explosive atmospheres and tolerant of dry-run.

02 · Bolted construction

Four bolts hold one leak-proof pump housing.

Body in polypropylene, aluminium, or SS316. Diaphragm in Santoprene or PTFE depending on the fluid service. Field-repairable with standard wrenches.

03 · Cross-section

Split the pump: two chambers, two diaphragms, one air spool.

Left and right chambers are linked by a central shaft. The air spool at the centre alternates compressed-air supply to the back side of each diaphragm.

04 · Stroke 1

Air pushes the left diaphragm outward: discharge.

Fluid in the left chamber is compressed, the top ball check lifts, fluid flows to the discharge manifold. The right diaphragm is pulled inward: bottom ball check lifts, fluid enters through suction.

05 · The spool flips

Pilot signal fires: the spool shifts to the opposite position.

As the shaft approaches the end of travel, the pilot valve triggers the air spool. Pressure side and exhaust side swap in under 0.1 seconds. The classic tick-tick-tick AODD sound comes from this event.

06 · Stroke 2

Now the right diaphragm takes the push.

Fluid in the right chamber is compressed out through the top ball check. The left diaphragm is pulled back, drawing fresh fluid through the bottom ball check. The cycle repeats continuously.

07 · Continuous

Hit Run: the pump finds its own rhythm.

Real-world operation: 60-180 strokes per minute depending on air pressure and back pressure. Air consumption 0.5-3 SCFM per gpm. Self-priming to 5 m, run-dry safe.

A summary of the Yamada AODD diaphragm cycle for readers with animation disabled or devices without WebGL.

No electric motor

The AODD pump is driven by compressed air, not an electric motor. No mechanical seal, safe for ATEX explosive atmospheres.

Bolted construction

The pump housing is held by bolts, not a clamp band. Field-repairable with standard wrenches, no special tools.

Two-chamber cross-section

Left and right chambers are linked by a central shaft, with one air spool in the middle alternating pressure to each diaphragm.

Stroke 1: discharge left

Air pushes the left diaphragm outward; compressed fluid exits through the top ball check while the right diaphragm draws fresh fluid in.

The spool flips

The pilot valve fires the air spool when the shaft hits the end of travel. Pressure side and exhaust side swap in under 0.1 seconds.

Stroke 2: discharge right

Now the right diaphragm pushes the fluid out while the left diaphragm draws fresh fluid in. The cycle repeats indefinitely.

Continuous operation

At 60-180 strokes per minute the pump runs at a constant rhythm. Self-priming to 5 m, run-dry safe with no damage.

Yamada AODD product range at Arsindo

The two main families we configure most often for Indonesian customers. Stock parts (diaphragms, ball checks, air valves) are on the shelf at our Bekasi warehouse.

Yamada NDP-25 1-inch series: NDP-25BA metal body, NDP-25BP polypropylene, NDP-25BV conductive plastic, flange and Rc thread types — **NDP-25 series (1")** - capacity up to 165 lpm. Metal body (NDP-25BA aluminium/SS) or plastic body (NDP-25BP polypropylene, NDP-25BV conductive). Flange or Rc thread type.

Yamada NDP-40 1.5-inch series: NDP-40BS stainless, NDP-40BF aluminium, NDP-40BP polypropylene, NDP-40BV conductive plastic — **NDP-40 series (1.5")** - capacity up to 400 lpm. Metal body NDP-40BS/BF (stainless or aluminium) or plastic body NDP-40BP/BV. Fits light slurry transfer and chemical batching.

Also available: DP series for aggressive fluids (full-PVDF body), DP-F40 (4") for mining slurry, and NDP-50 (2") for high-volume duty. Request a quote with your target flow rate and fluid type.

Body and diaphragm material variants

Polypropylene (PP)

Weak acids and bases, temperature up to 65 °C. Lowest cost, lightest weight, most chemical-resistant for general industrial fluids.

PVDF (Kynar)

Strong acids (HCl, HNO₃, H₂SO₄), aggressive organic solvents. Temperature up to 90 °C. Default choice for chemical dosing.

Aluminium

Hydrocarbons, fuel oil, lubricants, non-polar solvents. ATEX-certified for flammable fluid transfer.

Stainless Steel SS316

Food and beverage, pharmaceutical (FDA-compliant), corrosive chemicals at temperatures up to 120 °C.

Diaphragm: Santoprene (general, abrasion-resistant), PTFE (universal chemical-resistant), EPDM (food-grade), Hytrel (high-temperature). Ball check valve material follows the body, or a custom spec for the fluid service.

Optimal operating conditions

Capacity: 5 - 1,000 litres per minute
Discharge head: Up to 8 bar
Dry suction lift: 4 m
Suction lift after priming: 8 m
Air supply pressure: 2 - 8 bar
Viscosity: Up to 40,000 cP (50,000 cP with Hytrel)
Solids content: ≤25 % by volume, particles ≤12 mm
Fluid temperature: -20 to 120 °C (material-dependent)

In the field

Photos from Arsindo customer installations: chemical dosing, solvent transfer, paint & coating, automotive (lubricant transfer + machine coolant), and packaging skids.

Yamada AODD at a coating site, body coated with dry yellow paint — Paint & coating transfer

Yamada AODD at an IBC dispensing station with transfer hoses and ball valves — IBC dispensing station

Three parallel Yamada AODDs with strainers and ball valves in an open cabinet — Triple-parallel dosing skid

Yamada AODD skid in a steel cabinet with mounted control panel — Enclosed skid + panel

Three wall-mounted Yamada AODD SS316 pumps with overhead manifolds and isolation valves — Wall-mounted SS316 bank

Yamada engineering design

Yamada AODD cutaway showing rugged bolted construction, outside-accessible air valve, maintenance indicator, unified air valve concept, pilot valve, and optimal stroke length — Yamada AODD cutaway: rugged bolted construction, outside-accessible air valve, maintenance indicator.

Rugged, bolted construction - four bolts hold the pump housing, not a clamp band. Eliminates leak paths, simplifies assembly torque, allows field repair without special tools.
Outside-accessible air valve - air valve inspection and maintenance without removing the pump from service.
Maintenance indicator - a reset button shows when maintenance is due. Removes the guesswork on service intervals.
Unified air valve concept - one air-valve size across many model sizes. Reduces parts confusion at the warehouse.
Modular pilot valve - an individual pilot valve depressed by the centre disc creates the pressure drop for spool shifting. Maintenance-free, no snap rings or lubricated dynamic o-rings.
Optimal stroke length - the result of Yamada's extensive research, maximizing diaphragm life and performance while minimizing downtime.

Certifications and standards

ATEX-certified for aluminium and stainless variants, Zone 1 and Zone 2 classifications for gas/vapour
FDA-compliant material set (SS316 + PTFE + EPDM) for food and pharmaceutical industries
3-A Sanitary Standard optional for dairy + food applications
Bolted construction leak-resistant, no dynamic wear part (mechanical seal-free design)

Project references

Riau Andalan Pulp & Paper / Amazon Papyrus - design and delivery of a chemical injection package using AODD pumps for biocide, sizing-agent, and retention-aid dosing on pulp and paper production lines. PVDF body selected for compatibility with the aggressive pulp-sector chemistry.

Automotive sector (machine coolant + lubricant transfer) - coolant and lubricant transfer across the automotive value chain, with aluminium body for fuel transfer and SS316 for water-based coolants. See the AODD-in-automotive case study for application detail (Indonesian).

FAQ

Frequently asked questions

01What is an AODD pump and when do you use a double diaphragm instead of a centrifugal?

AODD (Air-Operated Double Diaphragm) is a positive-displacement pump driven by compressed air, with two diaphragms alternately pushing fluid without direct contact with rotating mechanical components. Choose AODD when the fluid is abrasive, slurry, viscous (up to 50,000 cP), shear-sensitive, or contains particles up to 12 mm. AODD is self-priming up to 5 metres, run-dry safe, and needs no electricity in ATEX-classified explosive atmospheres.

02What capacity and size range of Yamada pumps does Arsindo carry?

As Yamada's authorized distributor, we stock the NDP series (1/2 inch to 3 inch) for general fluid transfer, the DP series for aggressive fluids with polypropylene/PVDF bodies, and the DP-F40 series (4 inch) for mining slurry. Capacity ranges from 30 to 1,000 lpm, head up to 70 m water column, suction lift 5 m. Stock parts (Santoprene diaphragms, valve balls, air valves) are ready at our Bekasi warehouse.

03What are the standard materials and upgrade options for Yamada AODD?

Standard body: polypropylene (chemical-resistant, economical), aluminum (general-purpose), or cast iron (oil/lubricant transfer). Upgrades: PVDF (Kynar) for strong acids, stainless SS316 for food grade and pharma, conductive-grade for Class I Div 1 ATEX areas. Diaphragm options: Santoprene (general), PTFE (chemical-aggressive), or Buna-N (oil-based). Selection follows Yamada's chemical-compatibility chart per fluid service.

04Is the Yamada pump suitable for ATEX-classified explosive atmospheres?

Yes. Because AODD is driven by compressed air and has no electric motor, it is inherently safe for Class I Division 1 or ATEX Zone 0/1 areas. For full ATEX certification, we supply a grounding kit, conductive PTFE diaphragm, and grounded-conductive body material. Suitable for solvent transfer (toluene, IPA, methanol), flammable substances, and Zone 0 chemical storage tanks.

05What is the air consumption and operating cost of an AODD Yamada vs a centrifugal?

AODD needs compressed air at 6-7 bar with consumption of 0.5-3 SCFM per gpm depending on operating point. For facilities without compressed-air infrastructure, this is a real cost item. But for services that fit the AODD use case (abrasive slurry, chemicals, shear-sensitive fluids), savings from reduced maintenance and zero leak risk usually outpace the energy cost. Rule of thumb: AODD is more economical than a centrifugal when the alternative would require SS316 or lined materials.

REFERENCES

References

Yamada Pump Asia Pacific - AODD Catalog & Compatibility Chart - Yamada Asia Pacific
Hydraulic Institute ANSI/HI 10.6 Air-Operated Pumps for Nomenclature, Definitions - Hydraulic Institute
ATEX Directive 2014/34/EU for Equipment in Explosive Atmospheres - European Commission
FDA 21 CFR 177.2600 Rubber Articles Intended for Repeated Use (food-grade diaphragm) - U.S. Food and Drug Administration