Industrial Storm Valve

2500.0 INR/Pair

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Product Details:

Valve Size DN50 to DN300
Connection Type Flanged
Valve Type Flanged End, Industrial Storm Valve
Control System Manual Lever or Gear Operated
Material Cast Iron, Ductile Iron
Features Corrosion resistant coating, High durability, Leak-proof design
Application Industrial flow control, storm water management, pipeline systems
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Industrial Storm Valve Price And Quantity

Price 2500.0 INR/Pair
Minimum Order Quantity 1 Pair

Industrial Storm Valve Product Specifications

Connection Type Flanged
Application Industrial flow control, storm water management, pipeline systems
Port Size 50mm to 300mm
Structure Flanged, bolted body with robust sealing
Valve Type Flanged End, Industrial Storm Valve
Type Storm Valve
Pin SS316 Pin
Temperature -10C to +120C
Valve Size DN50 to DN300
Power Manual
Media Water, Sewage, Industrial Liquids
Sealing EPDM/NBR Gasket
Features Corrosion resistant coating, High durability, Leak-proof design
Pressure PN10 / PN16
Disc Ductile Iron, Epoxy Coated
Control System Manual Lever or Gear Operated
Material Cast Iron, Ductile Iron

Operating Torque Optimized for easy manual operation
Testing Pressure Hydrostatic tested at 1.5 times the working pressure
End Connection Standard EN1092-2 Flange Drilling
Coating Thickness Minimum 250 micron epoxy
Gland Packing Adjustable, self-lubricating
Top Cover Bolted for secure maintenance access
Hand Wheel/Lever Type Ergonomic design, corrosion-resistant
Application Environment Wet wells, storm drain channels, outflows
Body Material High grade Cast Iron with epoxy coating

Product Description

An Industrial Storm Valve (frequently referred to as a marine storm valve or ship side scupper valve) is a heavy-duty, non-return check valve installed on piping systems that discharge overboard or into external drainage environments.

Its primary job is a critical safety function: allow fluids to drain out freely while automatically preventing any backflow (such as seawater, storm surges, or floodwater) from rushing back into the vessel or facility.

Here is an analysis of how they function, their technical specifications, and where they are used.

How it Works

A storm valve operates primarily as a swing check valve, but with a rugged, balanced flap mechanism.

Normal Flow (Draining): When wastewater, bilge water, or sewage flows from inside the system, the hydraulic pressure pushes the internal counter-balanced flap (disc) open, allowing fluid to discharge.
Reverse Flow (Sealing): If external pressure risessuch as a wave crashing against a ship's hull or a rising tidal storm surgethe external water pushes the flap back against the valve seat. The greater the external pressure, the tighter the valve seals.
Manual Override (Closing): Most industrial storm valves feature a handwheel and spindle. This allows operators to manually screw the valve shut, locking the flap tightly against the seat. This provides a positive, watertight seal during severe storms, dry-docking, or maintenance.

Core Types

Storm valves are generally categorized by their structural layout to fit tight piping configurations:

Straight Type: The inlet and outlet are perfectly aligned on the same horizontal or vertical axis.
Angle Type (90): The fluid enters from the bottom and exits at a right angle through the side. This is highly popular in marine hull applications where piping runs vertically before discharging horizontally through the ship's side.

Technical Specifications & Materials

Because these valves are constantly exposed to highly corrosive environments (saltwater, brackish water, and untreated waste), material selection is tightly controlled by international standards such as JIS F7311/F7312, DIN 86122, or ANSI.

1. Common Materials

Component	Standard Marine/Industrial	High-Corrosion/Premium
Body / Bonnet	Cast Iron (GG25) / Ductile Iron (GGG40.3)	Bronze (RG5 / LG2) or Stainless Steel (316)
Flap (Disc)	Bronze or Duplex Stainless Steel	Bronze or Monel
Seat Ring	Bronze or NBR/Viton (Resilient Seat)	Stainless Steel or PTFE
Stem / Spindle	Brass or Stainless Steel (SUS403)	Marine Grade Stainless Steel (SUS316)

Material Note: While cast iron is common for dry cargo vessels or mild industrial drainage, Bronze (such as Gunmetal) is heavily favored in seawater applications because it resists biofouling and galvanic corrosion.

2. Pressure and Connection Ratings

Pressure Class: Typically rated for low to medium pressure systems, commonly JIS 5K / 10K, PN5 / PN10 / PN16, or ANSI Class 150.
Sizes: Generally ranges from nominal diameters of DN50 (2") up to DN300 (12") or larger for main drainage trunks.
End Connections: Almost exclusively Flanged to ensure a highly rigid, leak-proof seal against a ship's hull or a storage tank wall.

Critical Applications

Marine & Shipbuilding: Installed at the ship's side on sanitary discharges, soil pipes, scuppers (deck drainage), and bilge discharge lines above or near the waterline.
Coastal and Estuary Infrastructure: Used in wastewater treatment plants, flood barriers, and pumping stations located in tidal zones to prevent seawater from contaminating fresh treatment systems.
Offshore Oil & Gas Platforms: Placed on open deck drainage lines to handle massive rainfall run-offs while blocking ocean spray.

Key Maintenance & Safety Considerations

Because storm valves are a line of defense against flooding, they require routine checks:

Flap Freedom: Sediment, barnacles, or marine growth can wedge the flap open. Regular flushing and mechanical checking of the hinge pins are required.
Resilient Seat Integrity: If the valve relies on a rubber or soft seat for a tight seal, oil, grease, or chemical waste can degrade the elastomer over time, causing minor weeping or leaking under backpressure.
Spindle Packing: The stuffing box around the manual handwheel spindle must be kept greased to ensure that when an operator needs to manually close it in an emergency, it isn't seized.

Engineered for Reliability

Designed with robust materials such as high-grade cast iron and ductile iron, this storm valve withstands harsh industrial environments. The minimum 250-micron epoxy coating prevents corrosion and extends product longevity. Its leak-proof structure and hydrostatic testing ensure reliable operation even under elevated pressure.

Optimized Manual Operation

Operation is user-friendly thanks to the ergonomic handwheel or lever, designed to minimize torque and facilitate easy manual use. The self-lubricating adjustable gland packing further enhances smooth handling, while the bolted top cover allows secure, straightforward maintenance access.

Versatile Application Range

Applicable in wet wells, storm drain channels, outflows, and a wide range of pipeline systems, this valve is ideal for managing water, sewage, and various industrial liquids. Flanged ends (EN1092-2) offer compatibility with standard pipework. Operating in temperatures from -10C to +120C, it's suited for diverse environments.

FAQ's of Industrial Storm Valve:

Q: How is the Industrial Storm Valve installed in a pipeline system?

A: The Industrial Storm Valve features EN1092-2 flanged ends, allowing secure and standardized bolting directly onto pipeline flanges. Its robust body structure and corrosion-resistant coating simplify installation in wet wells, storm water channels, and industrial flow systems.

Q: What are the benefits of the high-grade cast iron body with epoxy coating?

A: The cast iron body, combined with a minimum 250-micron epoxy coating, delivers strong mechanical integrity, high corrosion resistance, and durability-making it suitable for tough environmental conditions and extending product lifespan in storm water and industrial applications.

Q: When should adjustable gland packing be utilized?

A: Adjustable, self-lubricating gland packing should be adjusted during routine maintenance or if any minor leakage occurs at the stem seal. This design ensures a consistent seal and smooth manual operation over time.

Q: Where can the storm valve be effectively applied?

A: This valve is ideal for use in wet wells, storm drain channels, outflows, and various pipeline systems for water, sewage, and industrial liquid control. Its broad temperature range and corrosion resistance make it suitable for both indoor and outdoor environments.

Q: What is the process for maintaining the storm valve?

A: Maintenance is simplified with a bolted top cover, which grants easy, secure access to internal components. Periodic inspections and gland packing adjustments keep the valve leak-proof and extend its operational life.

Q: How does the valve ensure reliable sealing under pressure?

A: Hydrostatic testing at 1.5 times working pressure, along with EPDM/NBR gaskets and robust design, guarantees superior leak-proof performance during operation-even when exposed to high-pressure surge conditions.

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