Vertical Pressure Leaf Filter Manufacturer in India

Manufacturer of Vertical Pressure Leaf Filters (VPLF) for pharma, chemical & edible oil industries. SS304/316/Hastelloy. Custom designs. Since 1994.

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About

Sharpenn Technologies is a manufacturer of Vertical Pressure Leaf Filters (VPLF) in India, serving the process industry since 1994. Our vertical leaf filters are engineered for efficient solid-liquid separation in pharmaceutical, chemical, edible oil refining, food processing, and sugar industries. Each unit is custom-designed and manufactured at our facility in Thane, Maharashtra, with material of construction options including SS304, SS316, SS316L, Carbon Steel, and exotic alloys such as Hastelloy, Monel, and Titanium. With over three decades of manufacturing experience and ~1,000 units installed worldwide across 460+ installations (all applications), Sharpenn builds each filter to the duty.

Technical Specifications

Parameter	Specification
Equipment Type	Vertical Pressure Leaf Filter (VPLF)
Filtration Area	Sized to your duty
Material of Construction	SS304 / SS316 / SS316L / CS / Hastelloy / Monel / Titanium / PP-lined
Design Pressure	Rated up to 10 bar, in vessel volumes up to 10 m³
Design Temperature	Up to 250°C (depending on MOC)
Filter Leaf Construction	Leaf covered with a disposable filter bag made from filter cloth, which we can supply
Cake Discharge	Dry cake (pneumatic vibrator where the duty calls for it) / Wet cake (oscillating sluice header)
Cake Drying Medium	Steam / Hot Air / Nitrogen
Sealing	O-Ring (Viton / EPDM / Nitrile / Silicon)
Jacket Option	Available for hot filtration applications
Top Opening	Devit arm mechanism with I-bolts for quick opening
Solid Content Handling	Up to 5-7% suspended solids in feed
Standards Compliance	IS 2825 / ASME Section VIII Div. 1 (on request)

Working Principal

Step 1 - Pre-coating

A filter aid (typically 0.5-1% bleaching earth, activated carbon, or diatomaceous earth) is mixed with the liquid and circulated through the filter to form a pre-coat layer on both sides of each filter leaf.

Step 1 - Pre-coating

Step 2 - Filtration

The feed slurry is pumped into the vertical vessel under pressure. As the liquid passes through the pre-coat layer and the filter cloth, solid impurities are retained on the leaf surface. Clear filtrate flows through the internal channels into the common outlet manifold.

Step 2 - Filtration

Step 3 - Cake Formation

A cake of trapped solids builds up on both sides of the filter leaves, increasing the pressure differential until the filtration rate drops below the acceptable threshold.

Step 3 - Cake Formation

A cake of trapped solids builds up on both sides of the filter leaves, increasing the pressure differential until the filtration rate drops below the acceptable threshold.

Step 4 - Heel Filtration

Compressed air, steam, or nitrogen is applied from the top to push remaining unfiltered liquid through the leaves, minimizing product hold-up and loss.

Step 4 - Heel Filtration

Compressed air, steam, or nitrogen is applied from the top to push remaining unfiltered liquid through the leaves, minimizing product hold-up and loss.

Step 5 - Cake Drying

Steam or hot air is passed through the vessel to dry the filter cake in-situ, reducing moisture content. Drying typically takes 30-45 minutes.

Step 5 - Cake Drying

Steam or hot air is passed through the vessel to dry the filter cake in-situ, reducing moisture content. Drying typically takes 30-45 minutes.

Step 6 - Cake Discharge

Where the duty calls for it, the dried cake is dislodged using a pneumatic vibrator attached to the leaf shaft and discharged through a large-diameter bottom butterfly valve. For wet discharge, an oscillating sluice header with water spray nozzles is used.

Step 6 - Cake Discharge

Key Features & Industry Applications

Key Features

Applications by industry

Planned filter bag changes: The disposable filter bag is a consumable made from filter cloth, which we can supply, and the change interval depends on your process and requirements

Pharmaceutical & API: Clarification of syrups, filtration of APIs, LVPs, SVPs. Suitable for GMP-compliant processing environments.

Enclosed pressure system: Keeps process house clean, prevents product contamination and solvent loss, enables handling of hazardous or volatile liquids safely

Edible Oil Refining: Bleaching earth filtration, winterization for dewaxing of sunflower and rice bran oils, nickel catalyst removal in hydrogenation. Handles mustard, soybean, palm, sunflower, groundnut oil.

Large filtration area in compact footprint: Vertical design with double-sided leaf filtration provides maximum area per sq.m of floor space

Chemical & Petrochemical: Catalyst recovery, intermediate product clarification, solvent purification, activated carbon filtration. Available in corrosion-resistant alloys.

Pneumatic vibrator discharge where the duty calls for it: Reduces manual scraping, manpower and operator exposure to chemicals

Sugar & Distillery: Sugar syrup clarification, activated carbon filtration for decolorization, distillery process stream filtration.

Dry or wet cake discharge options: Flexibility to handle different process requirements within the same equipment

Food & Beverage: Clarification of fruit juices, vinegar, sauces, and liquid food products. SS316L construction available.

Jacketed construction available: Enables hot filtration for winterization of edible oils or temperature-sensitive chemical processing

Low product hold-up: Conical bottom design and heel filtration capability ensure maximum product recovery per batch

Why choose Sharpenn

Custom Engineering, Not Off-the-Shelf

Every unit is designed to your process specs. MOC, capacity, pressure rating, and footprint are tailored to your plant — not forced into standard models.

Custom Engineering, Not Off-the-Shelf

Every unit is designed to your process specs. MOC, capacity, pressure rating, and footprint are tailored to your plant — not forced into standard models.

In-House Manufacturing, Full Control

From raw material procurement to final inspection everything happens at our Shahpur facility under GMP protocols. No outsourced fabrication.

In-House Manufacturing, Full Control

From raw material procurement to final inspection everything happens at our Shahpur facility under GMP protocols. No outsourced fabrication.

30+ Years, One Focus

Since 1994, we’ve done one thing build reliable process equipment. Most of our orders come from repeat clients. That says more than any brochure.

30+ Years, One Focus

Since 1994, we’ve done one thing build reliable process equipment. Most of our orders come from repeat clients. That says more than any brochure.

After-Sales That Actually Shows Up

Dedicated team of engineers and technicians for installation support, maintenance, and spare parts. We don’t disappear after delivery.

After-Sales That Actually Shows Up

Dedicated team of engineers and technicians for installation support, maintenance, and spare parts. We don’t disappear after delivery.

After-Sales That Actually Shows Up

Dedicated team of engineers and technicians for installation support, maintenance, and spare parts. We don’t disappear after delivery.

After-Sales That Actually Shows Up

Dedicated team of engineers and technicians for installation support, maintenance, and spare parts. We don’t disappear after delivery.

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