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Blackstone WY-100DM

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Blackstone Sterilisation & Disinfection

Blackstone WY-100DM

Product Code: STDI-SE-3905

Vacuum sterilising for rooms without a boiler and with only a standard door.

Compact at 640 mm wide and fitted with pulsed vacuum, the WY-100DM sterilises wrapped kits, dressings, and hollow instruments in a 100-litre cylindrical chamber while generating its own steam from the mains.

Sections

Autoclave

Categories

Sterilisation & Disinfection

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

Blackstone positions the WY-100DM as a 100-litre single-door pulsating-vacuum steam steriliser for clinics and departments without plant steam. Its cylinder measures 420 mm across and 750 mm deep, inside a vessel with design limits of −0.1 to 0.3 MPa and 150 °C. Vacuum pulses to −0.086 MPa clear the air, then the load is held between 115 and 138 °C at 0.23 MPa. The unit raises to 11 kg of steam per cycle on a 15 kW supply, about 23 A per phase. D stands for the single door, M for the vacuum.

Absence is the defining feature, and it is worth stating plainly. It has no connection for building steam, no second door, and a 420 mm bore that stops about 4 mm short of the diagonal a standard 300 × 300 × 600 mm module needs. What the design keeps is the function that matters most for wrapped, porous and hollow loads: active air removal by pulsed vacuum, in a cabinet narrow enough for an ordinary door.

Series descriptions give the WY range a jacketed round chamber that retains heat and supports drying, with a geared door secured by an electric lock. The vacuum system provides water at 0.1 to 0.2 MPa, up to 190 kg per cycle, and compressed air at 0.4 to 0.7 MPa completes the services. The enquiry team shares the programme list, any Bowie-Dick and hollow-load test cycles, the vacuum pump type and the drying times.

The cabinet is 1,100 mm long, 640 mm wide and 1,700 mm high. Medigear. UK offers it to buyers in more than 80 countries, and the enquiry team provides stock and lead times.

Community and rural hospitals, satellite clinics, day surgery units and small decontamination rooms without plant steam are the natural home for the WY-100DM. Wrapped instrument kits, dressings and other porous items, and hollow or lumened instruments are its everyday loads, which is why it keeps pulsed vacuum despite its size. Temporary and field facilities without plant steam fit the same profile, provided they can offer a three-phase supply.

Evidence on hollow loads explains the choice and its limits. In a study of 476 helix tests, every steriliser passed the Bowie-Dick test, yet 41% of the helix tests failed, with outcomes depending on test conditions and the type of air removal used. A clinical review of steam sterilisation makes the same point: the helix test checks whether trapped air can be removed from inside hollow instruments, which needs dynamic vacuum. Vacuum air removal is necessary for these loads, and a hollow-load test is what shows it is working.

The WY-100DM is a reduced design with the essential part intact. It leaves out a building-steam connection, a second door and module-sized capacity, and keeps pulsed vacuum in a cabinet that passes a standard door and runs on mains services. For a site whose loads fit a 420 mm bore and whose layout is a single room, nothing that matters is missing.

Formal tenders, including NHS ones, specify load types, testing regimes and site constraints, and public buyers in other countries do the same. The conformity documentation those procurement routes require is issued by the manufacturer and shared by the enquiry team.

Pulsed Vacuum Kept Where It Counts

Vacuum pulses to −0.086 MPa remove air from packs and lumens before the hold. The function wrapped, porous and hollow loads depend on stays in the design.

Steam From Its Own Generator

The unit raises to 11 kg of steam per cycle from its electrical supply. Sites without a boiler or steam main can still run vacuum cycles.

A Cabinet That Fits Standard Doors

At 640 mm wide, the uncrated cabinet passes most standard doorways. Installation seldom requires widening openings or altering walls.

One Chamber for Kits, Dressings and Lumens

Wrapped kits, dressings, and hollow instruments share the same 100-litre chamber and vacuum cycles. A small site does not need a second machine for difficult loads.

Mains Services Only

Power, water, compressed air and a drain are all it asks of the building. That keeps installation within the reach of an ordinary clinic.

A Jacketed Chamber With Drying

Series descriptions give the round chamber a jacket that retains heat and supports drying. Packs leave the chamber with less moisture to manage.

An Electrically Locked Door

The series description gives the door a disc-type geared mechanism held by an electric lock. Door security does not depend on hand strength.

Planning Figures on the Sheet

The sheet states water use of up to 190 kg per cycle and power of up to 15 kW. The feed, drain and circuit can be sized before delivery.

Uniformity Stated for Validation

Temperature uniformity within ±2.0 °C is listed, giving validation a defined target for every cycle type.

100-Litre Cylindrical Chamber

A 420 mm bore runs 750 mm deep, about 104 litres by calculation.

Pulsating Vacuum, Code M

M denotes the pulsed vacuum, which reaches −0.086 MPa before the sterilising hold.

Single Door, Code D

D denotes the single door, used for loading and unloading.

Built-In Steam Generation

The unit's generator produces up to 11 kg of steam per cycle.

Sterilising Range

The hold runs between 115 and 138 °C at 0.23 MPa.

Design Limits

Design figures of −0.1 to 0.3 MPa and 150 °C cover both the vacuum and pressure phases.

Uniformity

The sheet specifies chamber temperature uniformity within ±2.0 °C.

Water Supply

Water arrives at 0.1 to 0.2 MPa, up to 190 kg per cycle, and mainly serves the vacuum system.

Compressed Air

The services list includes compressed air at 0.4 to 0.7 MPa.

Electrical Supply

A three-phase, five-wire AC supply at 380 V, 50 Hz, up to 15 kW, roughly 23 A per phase.

Module Fit

A standard 300 × 300 × 600 mm module needs about 424 mm diagonally, so it does not fit the 420 mm bore.

Jacket and Drying

The series jacket retains heat around the chamber and supports the drying stage.

Door Mechanism

The door closes on a disc-type gear with an electric lock, per the series description.

Hollow-Load Testing

Lumened instruments call for a hollow-load process challenge device alongside the Bowie-Dick test.

Cabinet Size and Weight

The cabinet measures 1,100 × 640 × 1,700 mm and weighs 365 kg net and 450 kg gross, per the Blackstone sheet.

The WY-100DM suits community and rural hospitals, satellite clinics and small decontamination rooms without plant steam that sterilise wrapped kits, dressings and hollow instruments in a single room. It is not the right choice for pass-through layouts, departments built around module-sized trays, or sites that cannot feed and drain up to 190 kg of water per cycle. Before ordering, confirm a 15 kW three-phase circuit, plan the water and drain, size the baskets to the 420 mm bore and add hollow-load testing to the routine. Medigear.uk lists the WY-100DM for business buyers worldwide and can arrange delivery, installation, commissioning, familiarisation and service cover. Request the basket dimensions, vacuum pump type, programme list, and EN 285 test results from the enquiry team before placing an order.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

It has no building-steam connection, a single door, and a bore too narrow for a standard sterilisation module. For a clinic or satellite unit, those absences rarely matter: it raises its own steam, one room handles loading and unloading, and sets can be packed to fit the chamber. They matter for a department that runs a segregated pass-through layout or plans its whole workflow around module-sized trays.

Because wrapped kits, dressings and hollow instruments hold air that gravity alone may not displace. Vacuum pulses draw that air out before the steam hold, which is what lets steam reach the inside of packs and lumens. A small chamber does not change the physics; the load type decides whether vacuum is needed.

No. A 300 × 300 × 600 mm module needs about 424 mm across its diagonal, and the bore is 420 mm, so trays and baskets have to be sized to the chamber instead. The enquiry team shares the dimensions of the baskets supplied, so sets can be planned to fit before the unit arrives.

With a hollow-load test, not a porous-load test alone. In a study of 476 helix tests, every steriliser passed the Bowie-Dick test, yet 41% of the helix tests failed, with results depending on test conditions and the type of air removal. Departments processing lumen-end instruments should run a hollow-load process challenge device in addition to the Bowie-Dick test.

A three-phase, five-wire 380 V, 50 Hz supply for up to 15 kW (roughly 23 A per phase), installed to BS 7671 in the UK. Water at 0.1 to 0.2 MPa behind backflow protection, compressed air at 0.4 to 0.7 MPa, and a drain capabledryer capable of handling hot discharge. No building steam is needed.

Most of that water serves the vacuum system, since the unit raises only up to 11 kg of steam per cycle. If the pump is water-sealed, as that figure suggests, it uses a steady flow of water to create the vacuum, so the feed and drain must be planned for the full 190 kg. The enquiry team identifies the pump type with the quotation.

The cabinet is 640 mm wide and 1,700 mm high, so it passes most standard doorways once uncrated, and the crate weighs 450 kg. In place, 365 kg on a 1,100 × 640 mm footprint loads the floor at about 520 kg per square metre before water, and any lift into position is planned under LOLER.

EN 285, by volume: its chamber holds about 104 litres by calculation, above the 60-litre threshold, even though a full module does not fit. Ask for the manufacturer's EN 285 test results, and plan validation to EN ISO 17665 with periodic testing under Part C of HTM 01-01, or of SHTM 01-01 in Scotland.

In Great Britain, a competent person draws up the written scheme of examination that the Pressure Systems Safety Regulations 2000 require for the vessel, built-in steam generator and compressed air supply. The water connection follows the Water Fittings Regulations. Medigear.uk can arrange installation, commissioning and service cover.

Healthcare decontamination needs a record of every cycle. The enquiry team confirms whether the WY-100DM records cycles by printer or data export so that the department can link each load to its record from day one.

The WY-100DM is typically Class IIa under UK MDR 2002, or higher depending on use, as stated on the manufacturer's declaration of conformity, which the enquiry team shares. The declaration identifies the legal manufacturer and, for a steriliser of this volume, should list EN 285, EN 61010-1, and EN 61010-2-040.