Cast Iron Valves

About Cast Iron Valves

Rendifield Cast iron valves are flow control devices made from cast iron—a strong, durable, and corrosion-resistant material often used in industrial and plumbing systems.

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Key Features:

Material: Made from grey or ductile cast iron.

Types: Includes gate valves, globe valves, check valves, and butterfly valves.

Cast Iron Valves Applications:

Ideal for low to medium pressure systems such as:

Water supply
Sewage systems
Fire protection systems

Advantages:

Affordable
Durable for non-corrosive fluids
Handles large pipe sizes well

Please find our range of high quality valves below.

Non-rising spindle Handwheel operated Valve

Key Technical Specifications:

Body Material: Cast Iron (GG25) or Ductile Iron (GGG40)
Disc/Wedge: Solid wedge, often ductile iron with EPDM/NBR coating
Stem Type: Non-Rising Spindle (stem does not move upwards during operation)
End Connections: Flanged (PN10 / PN16)
Operation: Handwheel operated
Pressure Rating: PN10 / PN16
Temperature Range: -10°C to +80°C (EPDM) / up to 100°C (NBR)
Standard: SANS, BS 5163, EN 1074

Key Features:

Compact design ideal for confined spaces (the stem remains in place while the gate moves internally)
Corrosion-resistant stem and seat material
EPDM- or NBR-coated wedge ensures tight shut-off
Robust handwheel for smooth manual control
Suitable for both above-ground and underground installations

Typical Applications:

Potable and raw water systems
Fire protection mains
Industrial process lines
Municipal and agricultural infrastructure

Brass Gate Valve

Key Technical Specifications:

Body Material: Forged or cast brass (CW617N / CZ122)
Stem Material: Brass or stainless steel
Disc/Wedge: Brass wedge or brass with resilient seal
Connection Type: BSP threaded (F/F) – parallel or tapered threads
Operation: Manual handwheel
Pressure Rating: PN16 / 232 psi
Temperature Range: -10°C to +120°C
Standards: ISO 228, EN 12165

Key Features:

Compact and corrosion-resistant for general plumbing applications
Full bore design for minimal flow restriction
Smooth handwheel operation for precise flow control
Suitable for hot and cold water, air, and light oils
Threaded ends allow easy installation and maintenance

Typical Applications:

Residential and commercial plumbing systems
Industrial air and water supply lines
Agricultural irrigation
Low-pressure fluid control

Gate Valves

Knife Gate Valve: WCB R/Spindle T10 SS304 disc EPDM seat + Handwheel

Key Features:

Body Material: WCB (Weldable Cast B) carbon steel, offering robust mechanical strength and durability.
Stem Type: Rising spindle design allows for visual indication of the valve’s open or closed position, enhancing operational safety.
Disc Material: Constructed from SS304 stainless steel, providing excellent corrosion resistance and longevity.
Seat Material: EPDM (Ethylene Propylene Diene Monomer) rubber seat ensures tight sealing and is suitable for various media, including water and certain chemicals.
Operation: Manual operation via a handwheel, allowing precise control over flow regulation.

Technical Specifications:

Pressure Rating: Typically rated for PN10 (10 bar) applications. However, depending on specific design and manufacturer, pressure ratings can vary.
Temperature Range: EPDM seats generally operate effectively between -10°C to 120°C. It’s essential to consult the manufacturer’s datasheet for exact temperature limits.
Connection Type: Commonly available with flanged ends conforming to various standards (e.g., DIN, ANSI).

Typical Applications:

Water Treatment Plants: For controlling the flow of potable and non-potable water.
Industrial Processes: Suitable for systems requiring reliable shut-off capabilities.
Irrigation Systems: Managing water distribution in agricultural settings.

Slurry Gate Valve: Slurry WCB R/Spindle T10 SS304 Disc EPDM SeatH/WHEEL

Key Features:

Body Material: Made from WCB (Weldable Cast B) carbon steel, offering robust mechanical strength and durability suitable for demanding environments.
Stem Type: Features a Rising Spindle design, providing a visual indication of the valve’s open or closed position, enhancing operational safety.
Disc Material: Equipped with an SS304 stainless steel disc, ensuring excellent corrosion resistance and longevity, especially in abrasive media.
Seat Material: Utilizes an EPDM (Ethylene Propylene Diene Monomer) rubber seat, offering tight sealing and compatibility with various media, including water and certain chemicals.
Operation: Operated manually via a handwheel, allowing precise control over flow regulation.
Design: Incorporates a knife gate mechanism, suitable for cutting through thick slurries and ensuring minimal clogging.

Technical Specifications:

Pressure Rating: Typically rated for PN10 (10 bar) applications. However, depending on specific design and manufacturer, pressure ratings can vary.
Temperature Range: EPDM seats generally operate effectively between -20°C to 120°C. It’s essential to consult the manufacturer’s datasheet for exact temperature limits.
Size Range: Commonly available in sizes ranging from DN50 to DN1200, accommodating various pipeline requirements.
Connection Type: Available with flanged ends, conforming to standards such as ANSI B16.5 Class 150.

Typical Applications:

Mining Industry: Handling mineral slurries and tailings.
Pulp and Paper: Managing pulp stock and paper slurries.
Wastewater Treatment: Controlling sludge and other waste materials.
Chemical Processing: Suitable for processes involving corrosive or abrasive fluids

Cast iron Butterfly valve nickel plated disc EPDM liner PN16 + LVR

Key Features

Body Material: Cast Iron (e.g., GG25 or GGG40), providing strength and durability for general-purpose use.
Disc: Nickel-plated ductile iron disc offers enhanced corrosion resistance and durability.
Liner: EPDM (Ethylene Propylene Diene Monomer) liner ensures excellent sealing and is suitable for water, air, and certain chemicals.
Pressure Rating: PN16 (16 bar / 232 psi), suitable for medium-pressure applications.
Temperature Range: Typically from -10°C to 120°C, depending on manufacturer specifications.
Operation: Manual lever handle allows for quick 90° open/close operation, often with a locking mechanism for safety.
Connection Type: Wafer or lug style, compatible with various flange standards (e.g., ANSI, DIN).

Typical Applications

Water Treatment Plants: For controlling the flow of potable and non-potable water.
Industrial Processes: Suitable for systems requiring reliable shut-off capabilities.
Irrigation Systems: Managing water distribution in agricultural settings.

Cast iron wafer butterfly valves - handwheel operated

Key Features:

Body Material: Cast Iron (typically GG25 or EN-GJL-250)
Disc Material: Nickel-Plated Ductile Iron – corrosion-resistant and robust
Seat/Liner Material: EPDM – suitable for water, air, and non-oily fluids; offers excellent sealing
Pressure Rating: PN16 (16 bar / 232 psi)
Temperature Range: -10°C to +120°C (depending on the EPDM grade)
Operation: Gearbox-operated – manual gear reducer allows controlled opening/closing
Connection Type: Wafer or Lug type – fits between flanges (e.g. EN1092-2, ANSI standards)
Technical Specifications:
Valve Type: Wafer or Lugged Butterfly Valve
Body Material: Cast Iron (e.g., GG25 or EN-GJL-250), often epoxy-coated for corrosion resistance
Disc Material: Nickel-Plated Ductile Iron – offers enhanced corrosion resistance and durability
Seat/Liner Material: EPDM (Ethylene Propylene Diene Monomer) – suitable for water, air, and certain chemicals
Shaft/Stem Material: Typically Stainless Steel (e.g., AISI 420 or 431)
Pressure Rating: PN16 (16 bar / 232 psi)
Temperature Range: -10°C to +120°C
Operation: Manual Gearbox – allows for precise flow control, especially beneficial for larger valve sizes
Flange Compatibility: Designed to fit between PN10, PN16, and ANSI 150 flanges
Top Flange: ISO 5211 mounting pad for easy actuator installation

Typical Applications:

Water Treatment Plants: For controlling the flow of potable and non-potable water
Industrial Processes: Suitable for systems requiring reliable shut-off capabilities
Irrigation Systems: Managing water distribution in agricultural settings

Cast iron butterfly valve SS316 disc lever operated

Key Technical Specifications

Body Material: Ductile iron (e.g., GGG40/GGG50), often epoxy-coated for enhanced corrosion resistance
Disc Material: 316 stainless steel (CF8M), providing excellent corrosion resistance and durability
Liner Material: EPDM (Ethylene Propylene Diene Monomer), suitable for water, air, and certain chemicals
Shaft Material: Typically stainless steel (e.g., SS410 or SS316)
Operation: Manual lever with locking mechanism
Pressure Rating: PN16 (16 bar / 232 psi)
Temperature Range: -10°C to +120°C (subject to liner and seal materials)
Flange Compatibility: Designed to fit between PN6, PN10, PN16, ANSI 150, Table D, and Table E flanges
Size Range: Commonly available from DN50 (2″) up to DN300 (12″) for lever operation; larger sizes may require gearbox operation
Standards Compliance: Often complies with ISO 5211 for actuator mounting and PED 97/23/EC directives

Key Features

Corrosion Resistance: 316 stainless steel disc offers superior resistance to corrosion, making it suitable for a wide range of media, including aggressive chemicals
Reliable Sealing: EPDM liner provides excellent sealing capabilities, ensuring leak-tight performance
Ease of Operation: Lever operation allows for quick and straightforward manual control, with a locking mechanism for safety
Versatility: Suitable for various applications, including water treatment, HVAC systems, and general industrial processes
Compact Design: Wafer or lugged design enables easy installation between flanges, saving space and reducing weight

Typical Applications

Water Treatment Plants: Controlling the flow of potable and non-potable water
Industrial Processes: Managing the flow of various fluids in manufacturing and processing plants
Irrigation Systems: Distributing water in agricultural settings
Fire Protection Systems: Serving as control valves in fire suppression systems

Cast Iron Wafer Butterfly SS316 Disc Gearbox Operated

Key Technical Specifications

Body Material: Cast Iron (GG25)
Disc Material: Stainless Steel SS316
Seat Material: EPDM
Size Range: DN150 – DN600
Pressure Rating: PN16
Temperature Range: -10°C to +120°C
End Connection: Wafer Type
Operation: Manual Gearbox

Key Features

Precise flow control
Suitable for high-pressure applications
Durable and robust design
Low maintenance

Typical Applications

Industrial processing
Chemical plants
Water distribution systems

Double Door Wafer Non-return, Nickle Plated Disc

Key Technical Specifications:

Body Material: Cast Iron (GG25 / EN-GJL-250)
Disc Material: Nickel-Plated Ductile Iron
Seat Material: EPDM or NBR
Design Type: Double Door / Dual Plate Wafer Check Valve
Connection: Wafer type (fits between PN10/PN16/ANSI150 flanges)
Pressure Rating: PN16
Temperature Range: -10°C to 120°C (depending on seat material)
Flow Direction: Unidirectional
Installation: Horizontal or vertical (upward flow)

Key Features:

Dual spring-loaded plates ensure quick shut-off to prevent backflow
Compact wafer design saves space and weight
Nickel-plated discs enhance corrosion resistance and durability
Suitable for mounting between various flange standards
Maintenance-friendly, with low pressure drop across the valve

Typical Applications:

Water distribution and pumping stations
Fire protection systems
Industrial and commercial plumbing
Irrigation and water treatment networks

Cast Iron Double Door Wafer Non-return, SS316 Disc

Key Technical Specifications:

Body Material: Cast Iron (GG25 / EN-GJL-250)
Disc Material: Stainless Steel 316 (SS316) – corrosion and chemical resistant
Seat Material: EPDM or NBR (selectable)
Design Type: Double Door / Dual Plate Wafer Check Valve
Connection: Wafer-type (suitable for PN10, PN16, or ANSI150 flanges)
Flow Direction: Unidirectional
Installation Orientation: Horizontal or vertical (upward flow)
Pressure Rating: PN16
Temperature Range: -10°C to +120°C (subject to seat material)

Key Features:

SS316 discs offer superior corrosion resistance for aggressive media and coastal installations
Spring-loaded dual plate ensures rapid closure to prevent backflow
Lightweight wafer design enables easy handling and compact installation
EPDM/NBR seat options provide sealing versatility for water, air, or light chemicals
Compatible with various international flange standards

Typical Applications:

Coastal and marine environments
Water purification and desalination plants
Chemical dosing and industrial piping systems
Wastewater treatment and pumping stations
HVAC and chilled water systems

Cast Iron Flanged Non-return Valve

Key Technical Specifications:

Body Material: Cast Iron (GG25 / EN-GJL-250)
Disc Material: Ductile Iron or Stainless Steel (optional)
Seat Material: EPDM / NBR / Bronze / Metal seat (depending on application)
Design Type: Swing-type non-return valve (flanged ends)
Connection: Flanged (PN16 drilling pattern)
Flow Direction: Unidirectional
Installation Orientation: Horizontal preferred
Pressure Rating: PN16
Temperature Range: -10°C to +120°C

Key Features:

Full-flow design minimises pressure loss
Resilient seating ensures tight sealing and silent operation
Suitable for clean water, sewage, and neutral fluids
Long-lasting cast iron body with internal corrosion-resistant coating
Easy maintenance – top cover allows internal access

Typical Applications:

Municipal water supply systems
Wastewater and drainage systems
Industrial fluid handling
Pumping stations

Cast Iron Flanged Strainer

Key Technical Specifications:

Body Material: Cast Iron (GG25 / EN-GJL-250)
Screen Material: Stainless Steel (SS304 or SS316) mesh
Screen Type: Perforated or mesh basket (Y-type or T-type configuration)
End Connection: Flanged ends, PN16 drilling (compatible with standard flanges)
Drain Plug: Fitted with a blow-off/drain plug for easy cleaning
Pressure Rating: PN16
Temperature Range: -10°C to +120°C
Standard: BS EN 558, ISO 7005

Key Features:

Protects pumps, valves, meters, and equipment from debris and solids
Easy-access screen for maintenance and cleaning
Heavy-duty cast iron body for robust, long-lasting service
Stainless steel strainer basket ensures corrosion resistance and extended life
Designed for minimal pressure drop

Typical Applications:

Water treatment and distribution systems
Irrigation and agricultural lines
Industrial cooling systems
Process water and pump protection