• ALL TEFLON WETTED SURFACE
 • LIGHTWEIGHT COMPACT VALVE
 • POLYPROPYLENE ACTUATOR
 • AVAILABLE IN 2-WAY AND 3-WAY CONFIGURATION

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Corrosion Resistant (CR) Valves offer corrosion control through a complete fluoroplastic design and construction. The wetted surface is manufactured from virgin Teflon® while the pneumatic side is constructed from PVC. This is a large flow valve capable of handling tough chemicals internally while operating in severe external environments.

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The BECO “DV” series is a large orifice valve capable of handling large volumes of corrosive fluids via an all non-metallic wetted surface. For cost efficiency this valve is fabricated from PVC or Polypropylene. However, it is available in PVDF, with Kalrez® O-rings.
This valve is also available in 2, 3 and 4 way configurations with each port operating independently. The “DV” can be operated either by air to open/air to close or by spring return. Either operating method can be specified in the ordering format. Custom configurations available. Specifications
Applications:
Primarily used for quick draining and filling of process tanks which contain mild solutions or DI water. For hard to handle media the “DV” valve, machined from PVDF, is the perfect solution.

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The BECO Dilution Drain Valve is ideal for cooling and diluting solutions while draining. The valve is designed to shut off the drain automatically if the water flow is interrupted. The DDV fits tanks with 1/2” and 3/4” main drain hook-up. Standard dilution ratios are 2:1 and 6:1.
Other dilution rates are available at an additional charge.
Note:
Higher dilution rates will cause slower drain rates.
Applications:
Used to drain a tank while diluting and cooling the discharge.

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Features all Teflon® wetted path diaphragm design for ultra pure use as a DI water valve or acid drain valve. The IDF valve can significantly reduce bacteria buildup and maintain a consistent flow via an independent mechanism. This control mechanism will allow for precise adjustments and a cleaner cavity. The IDF valve is presently offered in a two-way closed configuration. The anti-bacteria configuration can be designated by adding –AB onto the suffix of the model number.

 

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The BECO MP Valve Body is manufactured in Teflon, PVC, Polypropylene, or PVDF depending on the individual application. The Teflon configuration is ideal for anti-corrosion and elevated temperature applications as well as making an excellent acid drain valve. The PVC, Poly, and PVDF configurations are the choice for wet bench manufacturers and semiconductor facilities where ultra pure DI Water is required.

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Features:
 • One Piece Teflon Body
 • Optimum Anti-Corrosion Design
 • Hi-Temp use-Upgraded Materials
 • Justifies use as DI Water Valve
 • No Media Contact with Elastomers,
 • Lube or Spring
Materials of Construction
Body..................... TFE Teflon
Bellows/Poppet.... TFE Teflon
Backing Plate....... TFE Teflon
Piston.................... PVDF
Cap....................... Polypropylene
Spring....................Stainless Steel

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BECO offers two styles of Suckback Valves. The original Suckback (this page) must be used with other valving to first shut off the flow. BECO’s latest design (back page) incorporates everything into one valve, and the vacuum is adjustable.
Suckback:
Valve BECO Suckback Valves are ideal for photoresist dispensing equipment to prevent excess dripping of the photoresist solution from dispense nozzles. When air pressure is removed from the valve actuator, the diaphragm is pulled up forming a vacuum in the valve body chamber, thus pulling and sucking the last drop of photoresist. The BECO Suckback Valve features all Teflon® wetted surfaces.

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This BECO Suckback Valve, is a normally closed Diaphram Valve. As the air pressure is removed from the valve actuator, a diaphram moves upward creating a vacuum. The adjustment knob on top of the valve allows the amount of vacuum to be controlled, thus controlling the volume of suckback. The BECO Suckback Valve features all Teflon® wetted surfaces.

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The BECO Water Valve (WV) is manufactured from industrial plastics such as PVC, Polypropylene, and PVDF. The valve has a spring return and is pneumatically actuated to open or close depending upon the model.
The valve is compact and comes with four tapped holes on the base for ease of mounting. Porting is generally 1/2" or 1" FNTP. Butt weld end configurations are available on the PVDF model to eliminate any chance of bacteria build up in the pipe threads.
Applications:
Primarily used for DI water in rinse tanks and quick dump applications. Valves of PVC are the most widely used, but for severe applications, polypropylene or PVDF will generally meet the requirements.

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The Quick Dump (QD) Valve is designed to be welded to the bottom of a tank and allows for quick drainage. This valve is manufactured in polypropylene, or PVDF stainless steel depending on the individual application. The Quick Dump is available with either an ORing of domed hardseat design which prevents ponding and allows for slight trickle action. The valve is compact and comes with optional air to open/spring to close or air to open/air to close configurations.

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Air & Liquid:
BECO Aspirators are machine from virgin Teflon, and are designed for efficient and rapid siphoning of hard to handle chemicals. The Air Aspirator, using city or DI Water pressures from10-50 psi or more will effect aspiration of viscous acids such as HF and H2SO4. Both Liquid & Air Aspirators may be ordered individually or in kit form.

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Tthe BECO Check Valve features all Teflon® wetted surfaces to make this valve inert to corrosives, able to handle varying viscosities and maitain purity levels. External materials used in addition to Teflon?, are polypropylene, and/ or anodized aluminum. Custom configurations available.
Applications:
Prevents unwanted fluids from backflowing into clean process tanks or other plumbing. Ideal for applications where directional control is a must.

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