APV / SPX Hygienic Valves
SW4 Series – Hygienic Single Seat Valves APV SPX
SW4 Series – Hygienic Single Seat Valves APV SPX
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Product Type:
Single Seat Valves
Description
The SW4 Series single seat valve is a hygienic and highly adaptable solution designed to meet the rigorous standards of modern processing industries. Engineered for durability and cleanability, it is ideal for use in the dairy, food, beverage, brewing, and chemical sectors.
Key Features & Benefits
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Reinforced housing with extra wall thickness to reduce stress at the seat area
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Long-lasting shaft seals with wear-resistant elastomer/PTFE materials
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Tool-free maintenance with clamp closure system
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Defined seat seal compression thanks to metallic stop
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Ball-shaped housing design prevents product retention, optimizing CIP cleaning
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Profile seals with clear markings for easy identification
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Wide configuration options including tangential connections and tank outlet versions
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Suitable for high-pressure applications and viscous products
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Available with steam barriers, modulating cones, and long-stroke variants
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3-A Sanitary Design compliant
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Material contact parts: AISI 316L / 1.4404 stainless steel
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Seal options: EPDM (standard), HNBR, FPM
Valve Configurations Available
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SW4 H: Manual operation
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SWS4: Divert valve
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SWT4: Tank outlet
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SWhp4: High-pressure design
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SW4 DPF: With steam barrier
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SW4 Long Stroke: For viscous fluids or large particles
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SWR4: With modulating cone
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Tangential inlet/outlet versions
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ATEX-compliant and 3-A certified models
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Nominal sizes: DN 25 – DN 150 / 1″ – 4″, 6″
Operating Principle & Key Components
The SW4 single seat control valve is designed to regulate or shut off fluid flow in processing lines. It operates pneumatically — using compressed air to move the valve stem and open the valve, while a spring mechanism returns the valve to its closed position when air pressure is released.
Two actuator configurations are available:
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NC (Normally Closed): Air pressure lifts the valve stem to open; a spring lowers it to close.
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NO (Normally Open): Air pressure lowers the valve stem to close; a spring lifts it to open.
The standard SW4 valve comes equipped with the CU4 Direct Connect control unit. Integrated LED indicators show the valve’s current open or closed position, enhancing process visibility.
Main Components of the SW4 Valve
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Control Unit – Monitors and indicates valve position via LED signals.
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Actuator Screw – Connects and secures the actuator to the valve body.
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Pneumatic Actuator – Powers the opening and closing movement of the valve stem.
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Yoke – Supports and aligns the actuator and valve body components.
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Valve Shaft – Transfers motion from the actuator to the seat mechanism.
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Upper Housing – Encases the shaft and provides structural support.
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Valve Seat – Ensures tight shut-off and precise flow control.
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Lower Housing – Forms the fluid-contact part of the valve and connects to the process line.
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Sealing Assembly – Includes elastomer seals that maintain hygiene and prevent leakage.
Product Specifications – SW4 Series
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Dairy Industry – milk, cream, whey
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Beverage Sector – juices, water, soft drinks
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Brewing – wort, water, auxiliary liquids
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CIP Systems (Clean-in-Place) – automated equipment cleaning
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Cosmetics & Personal Care – creams, shampoos, soaps
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Chemical Industry – non-aggressive process fluids