ANSUL Medium Expansion Foam Nozzle
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Product Technical Overview
ANSUL Medium Expansion Foam Nozzle
The ANSUL Medium Expansion Foam Nozzle is a portable firefighting device designed to produce and discharge medium-expansion foam for suitable fire protection applications. It uses an air-aspirating design, drawing air into the foam solution as it passes through the nozzle to create expanded foam.
ANSUL offers two documented medium-expansion handline nozzle models: the KR-M2 and KR-M4. The KR-M2 has a nominal flow rate of 227 litres per minute, while the KR-M4 has a nominal flow rate of 454 litres per minute, both at 100 psi (approximately 6.9 bar). The published datasheet lists an expansion ratio of approximately 50:1 for these models.
Medium-expansion foam can produce considerably more foam volume than low-expansion foam using a given volume of solution. Depending on the fire hazard and system design, it can help cover spill areas and reach locations such as openings in buildings. Correct selection depends on the application, compatible foam concentrate, water supply, and proportioning equipment.
Key Features
1. Air-Aspirating Foam Generation
The nozzle draws air into the foam solution to generate expanded foam. This design supports medium-expansion foam application when operated within the manufacturer's specified pressure and system requirements.
2. Two Flow-Rate Options
The ANSUL KR-M2 and KR-M4 models provide different nominal flow capacities:
- KR-M2: 227 L/min (60 US gpm) at 100 psi.
- KR-M4: 454 L/min (120 US gpm) at 100 psi.
The appropriate model should be selected according to the required discharge rate and the capacity of the firefighting system.
3. Stainless-Steel Construction
The published product datasheet specifies a stainless-steel nozzle tube and a tough polyurethane handle. These materials are intended to provide practical durability and corrosion protection for firefighting equipment.
4. Ball Shut-Off Valve
The documented models include a ball shut-off valve, allowing the operator to control the discharge during use. Operators should follow the manufacturer's operating and maintenance instructions.
5. Medium-Expansion Foam Output
The published expansion ratio is approximately 50:1. Actual foam performance can vary with the operating pressure, foam concentrate, proportioning arrangement, and other system conditions.
6. Compatible Foam Concentrates and Eductors
ANSUL recommends using the appropriate ANSUL Model Z eductor to proportion foam concentrate to the nozzle. The product documentation identifies compatible concentrate families for specific applications. Confirm current compatibility with the manufacturer before selecting the foam concentrate.
Technical Specifications
The following specifications are for the documented ANSUL KR-M2 and KR-M4 models.
- Product Name: ANSUL Medium Expansion Foam Nozzle
- Manufacturer / Brand: ANSUL
- Product Type: Portable medium-expansion foam handline nozzle
- Available Models: KR-M2 and KR-M4
- KR-M2 Part Number: 415983
- KR-M4 Part Number: 415984
- KR-M2 Flow Rate: 227 L/min (60 US gpm) at 100 psi
- KR-M4 Flow Rate: 454 L/min (120 US gpm) at 100 psi
- Nominal Test Pressure: 100 psi (approximately 6.9 bar)
- Normal Operating Pressure: 75–100 psi (approximately 5.2–6.9 bar)
- Minimum Stated Operating Pressure: 45 psi (approximately 3.1 bar)
- Expansion Ratio: Approximately 50:1
- Nozzle Tube Material: Stainless steel
- Handle Material: Tough polyurethane
- Shut-Off Valve: Ball valve
- Approximate Shipping Weight, KR-M2: 3.6 kg
- Approximate Shipping Weight, KR-M4: 4.1 kg
- Foam Proportioning Equipment: Matching ANSUL Model Z eductor, selected for the relevant model
- Inlet Connection: Confirm the exact supplied configuration
- Certifications and Approvals: Confirm current documentation for the exact product and application
Applications
Subject to the approved fire protection design and compatible foam concentrate, medium-expansion foam nozzles may be used for:
- Suitable flammable liquid spill fires
- Selected industrial fire protection applications
- Tire fires and certain waste or landfill fire scenarios
- Baled cotton, rolled paper, and similar storage hazards where the system design specifies medium-expansion foam
- Applying foam through door, window, or basement openings in suitable emergency scenarios
- Other fire suppression operations for which the equipment is approved
The nozzle is not a universal solution for every fire type. Confirm its suitability against the specific hazard, foam concentrate, and applicable fire protection standards.
How to Select the Correct ANSUL Foam Nozzle
Choose the Required Flow Rate
Select the KR-M2 for the documented 227 L/min configuration or the KR-M4 for the documented 454 L/min configuration, provided the selected flow matches the system design and available water supply.
Verify Operating Pressure
The nominal flow ratings are specified at 100 psi. The datasheet gives a normal operating range of 75–100 psi and identifies 45 psi as the minimum pressure for acceptable operation. Follow the product-specific operating instructions.
Match the Eductor
ANSUL recommends the matching Model Z eductor for foam concentrate proportioning. Confirm that the eductor capacity matches the selected nozzle and that the required concentrate percentage is supported.
Confirm Foam Concentrate Compatibility
Use only a foam concentrate approved for the intended hazard and compatible with the selected equipment. Check the current manufacturer documentation before ordering.
Verify the Model and Connection
Confirm whether the required product is the KR-M2 or KR-M4 and verify the inlet connection, part number, and supplied accessories.
Why Choose FASCO?
FASCO supplies firefighting and fire safety equipment for professional and industrial applications. Selecting the correct nozzle and matching proportioning equipment helps ensure that the foam system meets its intended operational requirements.
When contacting FASCO, provide your required flow rate, operating pressure, foam concentrate type, and connection requirements. This information helps confirm the correct ANSUL model for your application.
Buy ANSUL Medium Expansion Foam Nozzle from FASCO
Looking for an ANSUL medium-expansion foam nozzle for your fire protection system? Contact FASCO to enquire about the KR-M2 and KR-M4 models, verify availability, and request a quotation.
Confirm the exact model, technical specifications, compatible foam concentrate, and matching eductor before placing your order.
Contact FASCO for product details and pricing.
Key Industrial Features
- Heavy-Duty Construction: Built for severe industrial environments, extreme temperature resistance, and high-frequency operational duty.
- Standardized Ergonomics: Designed for prolonged wearing and user comfort without sacrificing required safety margins.
- Certified Reliability: Full batch inspection traceability guaranteeing compliance with required safety standards.
- Corporate Supply Support: Bulk packaging, user safety training documentation, and manufacturer test certificates available on request.
Recommended Applications & Industries
Regulatory Standards & Certifications
All products distributed by FASCO Pakistan are subject to stringent quality inspection and comply with one or more of the following international and national safety authorities:
Technical Datasheets & Compliance Certificates
To request official manufacturer datasheets, mill test certificates, or tender compliance documentation, please contact our engineering desk:
Nationwide Delivery & Corporate Logistics
- Dispatch Time: In-stock orders are dispatched within 24 to 48 hours from our central distribution hubs in Karachi and Lahore.
- Major Cities Covered: Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Multan, Gujranwala, Peshawar, Quetta, Sialkot, Hyderabad and all surrounding industrial zones.
- Logistics Partners: Trax, TCS, Leopard Courier, Daewoo Fastex, and dedicated freight carriage for heavy bulk shipments.
- Payment Options: Cash on Delivery (COD) for eligible parcels, Advance Online Bank Transfer (IBFT), and Corporate Purchase Orders (PO) with credit terms for approved corporate accounts.
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