Complete Alfa Laval hygienic-line brochure covering the Front, HL and M lines including plate patterns, gasket materials, frame options and 3-A compliance.

Hygienic line — Gasketed plate-and-frame heat exchangers

Alfa Laval "In Good Hands" catalog — the definitive reference for the hygienic component portfolio (pumps, valves, tank equipment, fittings) with performance data.

Fluid handling equipment portfolio

Alfa Laval 360° Service Portfolio brochure — services across the equipment lifecycle: planning, installation, commissioning, condition monitoring, spare-parts supply, upgrades and replacement.

Alfa Laval 360° Service Portfolio

Official Alfa Laval sensing and control portfolio overview — ThinkTop indication and control units for hygienic valves.

Sensing & control portfolio

Official Alfa Laval ThinkTop V20 valve indication unit product leaflet (PDF).

ThinkTop® V20 — product leaflet

Official Alfa Laval ThinkTop V50 and V70 control-unit product leaflet (PDF).

ThinkTop® V50 & V70 — product leaflet

Official Alfa Laval ThinkTop V50 / V70 installation and operation manual (PDF).

ThinkTop® V50 & V70 — technical manual

Official Alfa Laval ThinkTop V70 control-unit product leaflet (PDF).

ThinkTop® V70 — product leaflet

Alfa Laval ThinkTop V20 product page with the latest datasheets and IODD / PLC integration files.

ThinkTop® V20 — product page

Alfa Laval ThinkTop V50 product page with the latest datasheets and IODD / PLC integration files.

ThinkTop® V50 — product page

Alfa Laval ThinkTop V70 product page with the latest datasheets and IODD / PLC integration files.

ThinkTop® V70 — product page

Official Alfa Laval LKH hygienic centrifugal pump product leaflet (PDF).

LKH centrifugal pump — product leaflet

Alfa Laval LKH centrifugal pump product page with the latest datasheets and performance curves.

LKH centrifugal pumps — product page

Official Alfa Laval LKH Prime self-priming centrifugal pump product leaflet (PDF).

LKH Prime — product leaflet

Official Alfa Laval LKH UltraPure performance curves and specifications (PDF).

LKH UltraPure — performance curves

Official Alfa Laval LKHSP self-priming centrifugal pump product leaflet (PDF).

LKHSP — product leaflet

Official Alfa Laval LKHSP installation and operation instruction manual (PDF).

LKHSP — instruction manual

Official Alfa Laval hygienic valves portfolio page with datasheets, manuals and CAD models.

Hygienic valves — portfolio & documentation

Official Alfa Laval Unique Mixproof valve product leaflet (PDF).

Unique Mixproof valve — product leaflet

Official Alfa Laval Unique SSV single-seat valve (standard) product leaflet (PDF).

Unique SSV (standard) — product leaflet

Official Alfa Laval Unique SSV Aseptic single-seat valve datasheet (PDF).

Unique SSV Aseptic — datasheet

Alfa Laval LKB butterfly valve product page with the latest datasheets and options.

LKB butterfly valve — product page

Alfa Laval "Intelligent reliability — solutions for superior flow control" valves & automation brochure (PDF).

Superior flow control — solutions brochure

Official Alfa Laval tank-cleaning equipment portfolio page with datasheets and manuals.

Tank cleaning equipment — portfolio

Official Alfa Laval TJ20G rotary jet head product leaflet (PDF).

Rotary Jet Head TJ20G — product leaflet

Official Alfa Laval Toftejorg TJ20G rotary jet head instruction manual (PDF).

Rotary Jet Head TJ20G — instruction manual

Official Alfa Laval GJ 7 compact rotary jet head product leaflet (PDF).

Rotary Jet Head GJ 7 — product leaflet

Official Alfa Laval GJ PF FT rotary jet head product leaflet (PDF).

Rotary Jet Head GJ PF FT — product leaflet

Official Alfa Laval Toftejorg MultiMidget / MultiMagnum rotary spray head instruction manual (PDF).

Rotary Spray Heads (Multi) — instruction manual

Thermal and hygienic fluid-handling equipment.

Alfa Laval

Valve indication unit for sensing-only duties — 360° LED status indication and ±1 mm position feedback where a valve position must be confirmed but not controlled. IP69K. Ideal for retrofit indication on existing hygienic valves.

ThinkTop® V20

Compact control unit for hygienic valves with up to one solenoid (butterfly / single-seat). ±0.1 mm accuracy, Auto / Live / Flex setup, Digital, AS-Interface or IO-Link. For valve stems under 65 mm.

ThinkTop® V50

Second-generation control unit for demanding duties — up to three solenoids for mixproof valves, ±0.1 mm accuracy, Burst & Pulse seat cleaning (CIP media savings up to 95 %) and IO-Link diagnostics. For valve stems over 65 mm.

ThinkTop® V70

Intrinsically-safe basic sensing and control for hazardous-area hygienic lines across dairy, food, beverage, biotechnology and pharmaceutical applications.

Indication units (ThinkTop® Basic)

The core Alfa Laval hygienic centrifugal pump range — 316L wetted parts, efficient and gentle handling for general transfer, CIP supply and process duties across dairy, food, beverage and pharma.

LKH — hygienic centrifugal pump

Self-priming centrifugal pump using air-screw technology to handle CIP return and liquids with entrained air. Sizes 10/20/40, up to ~100 m³/h at 50 Hz and 7.5 bar differential.

LKH Prime — self-priming centrifugal pump

High-purity variant for biotech and pharmaceutical duties — easy cleanability, EHEDG-oriented design and comprehensive Q-doc documentation. Eight sizes, capacities up to ~275 m³/h.

LKH UltraPure — high-purity centrifugal pump

Traditional self-priming pump (tank + non-return valve on a standard LKH) for tank drainage and CIP return where liquids contain air or gas. Sizes LKHSP-10 to -40.

LKHSP — self-priming centrifugal pump

Double block-and-bleed valve for matrix systems — independent plugs and an atmospheric leakage chamber prevent cross-contamination during simultaneous product/CIP flows. Basic, SeatClean, HighClean and UltraClean versions; ThinkTop V50/V70 compatible.

Unique Mixproof valve

Pneumatic single-seat valve platform (standard, aseptic, tank-outlet, tangential) — EHEDG-certified and 3-A authorised with a semi-maintainable actuator for routing and shut-off on hygienic lines.

Unique SSV single-seat valve

In-line butterfly valve for low-to-medium viscosity liquids — manual handle or pneumatic actuator (NC/NO/A-A), and compatible with Unique Control automation units for CIP and recipe control.

LKB butterfly valve

3D-indexed high-impact rotary jet heads for hygienic tanks — TJ20G for 15–150 m³ and TJ40G for 150–2250 m³, with HD and Burst variants. Self-lubricated by the cleaning fluid; ATEX options.

Rotary Jet Head — TJ series

Compact rotary jet heads for small tanks, drums and barrels — GJ 7 for small vessels and GJ PF FT to retrofit existing spray balls on 15–150 m³ tanks.

Rotary Jet Head — GJ series

Swirling fan-pattern spray heads (MultiMidget / MultiMagnum) for lighter-duty cleaning of 0.1–125 m³ vessels — self-lubricated by the cleaning media.

Rotary Spray Heads (Toftejorg Multi)

Plate, gasketed and welded heat exchangers for heating, cooling, pasteurization and heat recovery.

Centrifugal, rotary lobe and twin-screw pumps for sanitary process duties.

Mix-proof, seat, butterfly and control valves plus sanitary fittings.

Control units, sensors and process automation for hygienic lines.

Static and rotary tank-cleaning machines for effective CIP.

Spirax Sarco

Pressure-reducing stations, control valves and safety valves.

Thermodynamic, thermostatic, float and inverted-bucket traps.

Pumps, receivers and management systems for closed-loop condensate return.

Audits, monitoring and upgrades to reduce steam-related energy costs.

Official Praj HiPurity overview of the complete pharmaceutical water-system offering and business lines.

Water Systems overview

Official reference for the end-to-end water-system approach — treatment stages from raw water to point of use.

Raw Water to Point of Use

Official reference for feed-water conditioning and microbial-control options.

Pre-treatment systems

Official reference for hot-water-sanitisable RO and EDI purified-water generation.

Purified Water Generation

Official reference for sanitary storage and recirculating distribution loops.

Storage and Distribution

Official reference for WFI and Combi pure-steam distillation systems.

WFI and Pure Steam Generation

Praj HiPurity corporate portal for company information and the latest revisions.

Praj HiPurity — corporate & contact

The end-to-end view: assessing incoming raw water and defining the treatment train needed to reach the final point-of-use specification. Setting this basis first avoids under- or over-designing the individual stages.

Feed-water conditioning and microbial control ahead of purification — multi-grade / disc filtration, softening, dechlorination, ultra-filtration and, where required, nano-filtration or a first RO pass — sized to protect the downstream membranes.

Pre-treatment

USP/EP-compliant PW generation — typically hot-water-sanitisable reverse osmosis combined with EDI in skid-mounted, zero-dead-leg configurations that hold sanitary conditions and consistent conductivity.

Holding generated water at grade from the generation outlet to every user point — sanitary storage tanks and 24/7 recirculating loops with hot-water (85 °C), pure-steam (121 °C) or ozone sanitisation, in SS316L electropolished tube with full traceability.

Storage & Distribution

Water for Injection and pure steam — standalone or 'Combi' distillation units (designed with Aqua-Nova) that produce WFI and pure steam together, with proportionate output regulation, faster start-up and 15–20 % higher pure-steam output for sterilisation cycles.

WFI & Pure Steam Generation

Praj HiPurity

The end-to-end treatment basis — from raw-water assessment to the final point-of-use specification.

Feed-water conditioning and microbial control ahead of the purification stages.

USP/EP-compliant PW generation — hot-water-sanitisable RO with EDI.

Sanitary storage and 24/7 recirculating distribution loops that hold water at grade.

Water for Injection and pure steam — standalone or Combi distillation.

Plate heat exchangers for heating, cooling, pasteurization and heat recovery.

Thermal Solutions

Pumps, valves, tank-cleaning equipment and process automation for sanitary duties.

Hygienic Fluid Handling

Steam distribution, trapping, condensate recovery and system-efficiency improvements.

Steam and Utility Solutions

Purified water, high-purity water and related process utility solutions.

Pharmaceutical Process Utilities

Hygienic processing for milk, cream, cheese, yoghurt and cultured products.

Dairy

Food Processing industry — Delta Flow Tech

Sanitary heating, cooling and fluid handling for food and ingredient plants.

Food Processing

Wort cooling, CIP and utility support for craft and industrial breweries.

Brewery

Hygienic mixing, pasteurization and fluid handling for juices and soft drinks.

Beverage

Fluid handling and utility solutions for detergents and household formulations.

Home Care

Personal Care industry — Delta Flow Tech

Sanitary process equipment for cosmetics, creams and personal-care formulations.

Personal Care

Pharmaceutical and Life Sciences industry — Delta Flow Tech

Purified-water, high-purity water and utility solutions for regulated pharma.

Pharmaceutical and Life Sciences

Delta Flow Tech Engineers Pvt. Ltd. was established in 2012 and operates from Delhi, India. We support customers with hygienic process equipment, thermal solutions, fluid handling, steam systems, pharmaceutical utility solutions, spares and after-sales service. Our work covers equipment selection, technical discussions, supply, installation support, maintenance and lifecycle assistance — positioning us as an engineering partner rather than a trader.

An engineering and service partner for hygienic process industries

Own the sales cycle for hygienic process equipment — from application discovery and technical discussion to selection, quotation and order closure.

Sales Engineer

Handle installation, commissioning, maintenance and troubleshooting of plate heat exchangers, pumps, steam traps and other equipment supplied by DFT.

Service Engineer

Engineering Efficient and Hygienic Process Solutions

Direct relationships with plant heads, projects and utilities teams across dairy, food, brewery, beverage, personal care and pharma.

Strong customer access across North India

Engineering-led selling — solutions matched to the process, media and utility conditions.

Application-focused technical sales

Long-standing coordination with plant engineering, maintenance and projects teams.

Established plant-level relationships

Installation, commissioning, breakdown attend and preventive maintenance handled in-house.

Site service and after-sales support

Selection, supply, installation, spares and maintenance under one relationship.

Complete enquiry-to-lifecycle coordination

This placeholder policy explains how Delta Flow Tech Engineers Pvt. Ltd. handles information submitted through the enquiry form. It is marked for review by Delta Flow Tech before launch and is not legal advice.

1. Information we collect. When you submit an enquiry we collect your name, company, work email, phone number, industry, nature of requirement and message.

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Privacy Policy

A dairy pasteuriser built around a gasketed plate heat exchanger is really four coordinated sections: regeneration, heating, holding and cooling. Regeneration recovers heat from the hot pasteurised stream into the incoming cold stream — a tight 2–4 °C approach here can recover 90 %+ of the heat and slash utility demand, but it drives plate count and pressure drop. The heating section trims the product to pasteurisation temperature with hot water or steam-heated water; the holding tube fixes residence time; the cooling section drops the product to storage temperature against chilled water or glycol.

For cream, higher viscosity and fat content reduce the film coefficient, so the plate pattern and approach must be chosen for the actual product properties, not water. Gasket material is set by the CIP chemistry and temperature. DFT captures product properties, flow, temperatures, allowable pressure drop and CIP regime, then coordinates the plate selection and utility interfaces so the pasteuriser meets duty without oversizing.

How a gasketed PHE pasteuriser is arranged for regeneration, heating, holding and cooling — and where the design margins really matter.

Cream & milk pasteurization with plate heat exchangers

A compliant PW/WFI system is designed backwards from the point-of-use specification. The pharmacopoeia grade, peak and average demand and sanitisation method fix the basis; pre-treatment then protects the membranes, generation (hot-water-sanitisable RO with EDI for PW; distillation or Combi units for WFI and pure steam) produces water at grade, and a 24/7 recirculating loop holds it at grade to every user point.

The common failure mode is designing each unit in isolation — a generation skid that cannot hold conductivity because the loop velocity or sanitisation strategy was fixed too late. DFT captures the raw-water analysis, demand profile and user-point layout and coordinates the whole journey with Praj HiPurity so pre-treatment, generation, storage and distribution are consistent. Final engineering, qualification and validation are confirmed per project.

Treating a pharma water requirement as one journey — pre-treatment, generation, storage and distribution — against the point-of-use specification.

Purified Water & WFI generation for regulated plants

A brewery wort cooler is a heat-recovery opportunity as much as a cooling duty. A single- or two-stage plate heat exchanger cools hot wort to pitching temperature: the first stage recovers heat into brewing liquor sent to the hot-liquor tank (cutting energy for the next brew), and the second stage trims to pitching temperature against glycol or chilled water.

The design levers are the approach temperature on the recovery stage, the glycol supply temperature and the allowable pressure drop on the wort side (which is fouling-prone from trub and hop matter). DFT sizes the cooler for the recovery target and pitching temperature, integrates the glycol supply and specifies a plate pattern and gasket suited to wort duty and CIP.

Sizing a wort cooler that hits pitching temperature while recovering heat to the hot-liquor tank.

Wort cooling with heat recovery

A jacketed cooking or heating vessel depends on dry, stable steam and effective condensate removal. A separator and correctly sized trap deliver dry steam to the jacket; the right trap type (often a float trap for modulating loads) drains condensate without waterlogging or steam loss; and a condensate recovery arrangement returns hot water to the boiler feed to reclaim energy and treated water.

Common problems are undersized traps that waterlog the jacket (slow, uneven heating) and failed traps that pass live steam. DFT frames the steam load, pressure and condensate arrangement and specifies the Spirax Sarco separators, traps, strainers and control valves to keep the process stable and efficient.

Getting stable, dry steam to a jacketed vessel and recovering the condensate for energy savings.

Steam-heated jacketed process & condensate recovery

It is a common site complaint: the heat-transfer area is clearly sufficient on paper, yet the exchanger will not reach the target temperature. Area is rarely the real problem. The usual causes are:

1. Fouling. A scaled or fouled plate surface adds thermal resistance and raises the approach temperature. Trending the approach against the design sheet shows this creeping up long before it becomes critical — a performance audit and CIP or reconditioning restores duty.

2. Air or non-condensables. Trapped air blankets the plates and reduces effective area. Proper venting at start-up matters.

3. Flow arrangement and maldistribution. A changed pass arrangement, throttled flow or a partially blocked port skews the flow distribution across the pack, so parts of the area do little work.

4. An impossible approach. If the specified outlet demands a closer approach than the terminal temperatures physically allow, no amount of area will get there — the second-law limit, not the area, is binding.

Before adding plates, check the approach trend, vent the unit, confirm the flow arrangement and verify the duty is thermodynamically achievable. More often than not the fix is cleaning or correct operation, not a bigger frame.

Why your plate heat exchanger won't reach target temperature — even with 'enough' area

Steam traps fail in two ways, and both cost money. A trap failed open passes live steam continuously — an invisible, ongoing loss that never shows on a gauge. A trap failed closed waterlogs the line, so heat transfer collapses and water hammer damages fittings.

Because the loss is invisible, the only defence is a regular trap survey: checking each trap for correct operation and logging failures for replacement. Alongside the survey, three habits keep a steam system efficient — matching the trap type to the duty, fitting a strainer before each trap to keep dirt off the seat, and recovering condensate and flash steam so the energy already paid for is not vented to atmosphere.

For plants running Spirax Sarco equipment, DFT can frame a trap survey and specify the correct trap, strainer and condensate-recovery arrangement for each duty.

Steam traps: the quiet drain on plant efficiency

Retrofitting a control-top unit (such as an Alfa Laval ThinkTop) to an existing manual or pneumatic hygienic valve changes more than who turns the handle. Three things arrive with it:

1. Position feedback. The unit confirms open/closed (and seat position) back to the PLC with high accuracy — so recipes and interlocks can trust the actual valve state, not an assumption.

2. Seat-lift CIP. On mixproof valves, Burst and Pulse seat cleaning lifts each seat briefly during CIP to clean the seat area, using dramatically less CIP media than continuous lifting.

3. Traceability and diagnostics. IO-Link variants report diagnostics and unique identity, which supports condition monitoring and audit trails.

The practical selection is driven by the valve type and duty: an indication-only unit where you just need to confirm position, a single-solenoid unit for a butterfly or single-seat valve, or a multi-solenoid unit for a mixproof valve. DFT positions the right unit against the valve model and control interface and supports the commissioning.

From manual to automated valves — what a control-top retrofit really changes

Approach temperature — the ΔT between the two streams at the terminal side of a plate heat exchanger — is a first-order driver of plate count and heat-transfer area. Tightening the approach from 5 °C to 2 °C on a typical dairy pasteurizer can push plate count up by 40–60 %, which drives frame size, gasket cost and pressure drop. Rule of thumb: start at 4–6 °C for cooling duties and 2–4 °C for heat-recovery sections, then validate against the pressure-drop budget before locking the plate pattern.

Approach temperature and its impact on PHE selection

Ten inputs are the minimum for a competent PHE selection: (1) fluid names on each side, (2) mass flow rate (kg/h), (3) inlet and outlet temperatures, (4) design pressure and temperature, (5) allowable pressure drop per side, (6) fouling factor (m²K/W), (7) fluid physical properties at mean bulk temperature (ρ, cp, µ, k), (8) any suspended solids / fibrous content, (9) preferred gasket material driven by the CIP media (NBR, EPDM, FKM), and (10) hygienic-standard requirement (3-A, EHEDG, sanitary connections).

Basic information required to design a Plate Heat Exchanger

A DFT gasketed-PHE overhaul covers: (1) drain, decontamination and dismantling of the plate pack, (2) chemical cleaning of plates (alkaline + acid soak with agitation), (3) visual and dye-penetrant inspection of every plate for cracks, pitting or thinning, (4) gasket removal and regasketing with glue or clip-on type per OEM spec, (5) reassembly to the OEM A-measure (tightened plate-pack dimension), (6) hydrostatic pressure test at 1.5× design, (7) sign-off with photo record. Typical turnaround for a 100-plate pack is 5–7 working days.

Overhauling a gasketed PHE — service checklist

DFT operates as an engineering partner rather than a pure box-seller. Every enquiry starts with the process — mass balance, utility conditions, cleaning regime — and we then select equipment across Alfa Laval, Spirax Sarco, Praj HiPurity and other principals. Post-supply we cover installation supervision, commissioning, breakdown attend, plate-pack overhaul, spares and manual-to-automation retrofits. This lifecycle model means fewer coordination points for the plant team and a single accountable partner from enquiry through mid-life service.

Working with DFT — beyond the equipment box

The exchanger is vital to your process. Regular servicing keeps it performing like new and delivers the best return on investment.

Service it regularly

Keep temperatures, pressures and flow rates within design limits. Trending them reveals performance loss that wastes energy and raises CO₂.

Monitor operating conditions

Vent the unit at start-up and open/close valves slowly to prevent pressure surges and water hammer.

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