Wilden T8/AAAAB/BNS/BN/BN/0014 Aluminium Diaphragm Pump 2″

Wilden T8/AAAAB/BNS/BN/BN/0014 Aluminium Air-Operated Double Diaphragm Pump (Mfg. 2025)

The Wilden T8/AAAAB/BNS/BN/BN/0014 is a clamped-metal 51 mm (2-inch) air-operated double-diaphragm (AODD) positive displacement pump engineered for demanding fluid transfer across marine engine rooms, offshore rigs, and industrial process plants. Powered by the robust Turbo-Flo™ air distribution system, this clamped aluminum configuration provides high volumetric efficiency without the stall tendencies common to complex pilot valves in harsh or contaminated environments.

Fitted natively with commercial-grade Buna-N (Nitrile) elastomers—including standard diaphragms, check valve balls, and valve seats—this model is formulated specifically for petroleum-based products, waste oil, bilge water, hydraulic fluids, and neutral pH process slurries. Its clamped liquid chamber and manifold architecture allow rapid strip-down, inspection, and rebuilds directly in shipboard machinery spaces or field installations without requiring specialty tooling.

Model Details:

• Manufacturer: Wilden Pump & Engineering LLC (PSG Dover)
• Full Model Code: T8 / AAAAB / BNS / BN / BN / 0014
• Manufacturer Part Number (MPN / Order No.): 08-11003
• Manufacturing Date: 2025 (Fresh factory elastomers and valve packings)
• Condition: New Unused

Key Features

1. Turbo-Flo™ Pneumatic Drive: Features a differential pressure air valve mechanism that operates under variable air line pressures and withstands moisture and particulate contamination without seizing.
2. High-Flow Clamped Manifold: Eliminates bolt-hole shear stress through high-tensile band clamps, providing 360-degree uniform sealing across wetted faces and reducing turnaround during elastomer overhauls.
3. Hydrocarbon-Rated Nitrile Trim: Buna-N diaphragms, check balls, and seats deliver chemical resistance against aliphatic hydrocarbons, diesel fuel, lubricating oils, and mild hydraulic fluids.
4. Run-Dry & Deadhead Capability: Positive displacement reciprocating design allows the unit to run dry without friction damage or thermal expansion failure, and safely deadhead against closed discharge valves without relief venting.
5. Explosion-Proof Mechanical Integrity: Air-driven mechanism with non-sparking cast aluminum wetted and non-wetted housings provides safe deployment in Class 1, Division 1 / Zone 1 hazardous marine and offshore machinery spaces.

Applications

• Marine Machinery Spaces: Engine room bilge stripping, oily water separator (OWS) pre-feed, slop tank transfers, dirty oil settling tank transfer, and deck drainage scupper clearing.
• Offshore & Drilling: Mud pit chemical dosing, fuel bunkering transfer (MGO/MDO), drip-pan reclamation, and ballast tank dewatering.
• Power & Refineries: Heavy lube oil batching, turbine oil drainage, waste cooling water transfer, and skimmer collection pumping.
• Manufacturing & Mining: Bulk hydrocarbon chemical transfer, water runoff collection containing suspended abrasive fines up to 6.4 mm, and general shop sump clearing.

Frequently Asked Questions

What fluids can the Wilden T8 with Buna-N elastomers handle?

The Buna-N (Nitrile) trim is engineered for petroleum distillates, diesel fuel, engine lube oils, mineral oils, hydraulic fluids, wastewater, bilge runoff, and general neutral-pH industrial slurries. It is not recommended for concentrated acids, ketones (MEK/Acetone), chlorinated hydrocarbons, or aggressive aromatic solvents.

How does the Turbo-Flo™ air distribution system differ from Pro-Flo?

Turbo-Flo is Wilden’s classical, high-durability pneumatic design with fewer moving parts and wider clearances. While Pro-Flo utilizes unbalanced spools for slight air economy, Turbo-Flo excels in dirty, moist, or unconditioned air supplies where other spools stick or foul.

Can the T8/AAAAB/BNS/BN/BN/0014 run completely dry?

Yes, being an air-operated positive displacement diaphragm pump, it has no rotating mechanical shaft seals or internal friction components requiring liquid lubrication. It can run dry indefinitely without damaging internal mechanisms or overheating.

What is the maximum discharge head and flow rating for this pump?

This model reaches a maximum output head of 86 meters (280 feet) of water, corresponding to an operational discharge pressure of 8.6 bar (125 psi) and a peak flow capacity of 617 L/min (163 GPM).

Are spare parts for older Wilden T8 pumps interchangeable with this 2025 unit?

Yes. Wilden maintains backward compatibility for the T8 clamped-metal platform. All 08-series Wet End kits (08-9804-52) and Air kits (08-9980-07) fit legacy and newly manufactured 2025 T8 clamped aluminum series pumps without mechanical alteration.