Separation & Filtration RFQ template & spec checklist

Separation and filtration equipment splits a stream by particle size, density, or molecular weight: disc-stack centrifuges and decanters, membrane systems from microfiltration through reverse osmosis, plate-and-frame and pressure-leaf filters, cross-flow units, and bag and cartridge housings for polishing. Plants shop this category to raise yield, clarify a product, concentrate before drying, recover a valuable fraction, or protect a downstream membrane. The economics hinge on flux decay, cleaning frequency, and how much product is lost to the reject stream, so a low equipment price can hide a high operating cost. Ask each supplier for a mass balance, not just a machine.

What to include in your request

• ▢ Feed stream: flow rate, temperature, solids type and concentration, particle size distribution, and viscosity
• ▢ Separation goal: target clarity or turbidity, concentration factor, or a specific rejection and permeate spec
• ▢ Product value and the acceptable loss to reject, retentate, or filter cake
• ▢ Cleaning regime, chemistries, and temperatures the membranes or contact parts must tolerate
• ▢ 3-A conformance for separators, clarifiers, and product-contact housings in dairy or liquid-food duty
• ▢ Batch or continuous operation, expected run time between cleans, and available floor space
• ▢ Utilities: power, CIP supply, compressed air, and drain for backwash or desludge

What drives the quote

• Technology type and hydraulic capacity
• Membrane area and element chemistry, or bowl size and the desludge mechanism
• Contact-part metallurgy and sanitary certification
• Automation: flux control, automatic desludge, CIP integration, and instrumentation
• Number of stages or skids and the degree of concentration required

Common spec mistakes to avoid

• Sizing on clean-water flux and ignoring the real flux decay the actual feed causes
• Underestimating cleaning frequency, so the line cannot hit daily volume once fouling is real
• Overlooking product loss in the reject stream when comparing a cheap unit to a better-yielding one
• Feeding a membrane without adequate prefiltration, which shortens element life dramatically
• Not stating feed-solids variability, so the machine chokes on the worst incoming batch

Lead time

Lead time depends on the technology and scale: a cartridge housing is quick, while a large disc-stack separator or a multi-skid membrane plant with custom elements runs much longer. Sanitary certification and exotic alloys add time.

FAQ

How do I get quotes for Separation & Filtration?

Post a request describing what you need. Suppliers in the Separation & Filtration category respond with a quote covering price, lead time, and what's included. No account is required.

Is it free?

Yes. Posting a Separation & Filtration request and receiving quotes is free for buyers.

Do suppliers see who I am?

No. Your Separation & Filtration request posts anonymized — suppliers see the category, spec, and state only. Your name and contact details are shared with a supplier only if you choose to connect with their quote.