• Quicker response time
• Less man power required than a portable large-volume delivery approach
• Less flow-rate required due to lower recommended application densities
• Less specialized training required
•  Few personnel exposed to a hazardous situation
• Manufactured using type 316 stainless steel
•  Available in six models
• Model 3305 contains a single air aspirating device whereby expanded foam solution discharges through left, right, and against the wall discharge points
•  All other AMBUSH models, 4421, 5541, 6661, and 8811, include a separately piped inlet with an additional air-aspirating device. This device discharges expanded foam solution towards the center of the tank
• Water and foam solution inlets are flat faced and drilled to ANSI 150 lb standard
• Inlets are covered with a stainless steel protection screen
• Finished with a durable red epoxy paint

• Manufactured in 316 stainless steel
• 316 stainless steel screens cover the foam maker air inlets
• ASTM A36 carbon steel mounting board optional (raises nozzle out of tank space)
• All Ambush System inlets are flat faced and drilled to ANSI 150 lb. standard.  Flange gaskets are provided.
• Finished with durable red epoxy paint

• It has three discharging points: the center stream towards the center of the tank and left and right points close to the tank wall.
• It is fitted with a Teflon style vapor seal that prevents tank vapors from escaping the tank through the nozzle’s air aspiration holes.
• It is manufactured from 316 stainless steel with stainless steel screens on the air inlets.
• Each unit has a 4” flat face ANSI 150 lb inlet flange and available with either a 4”, 6”, 8” or 10” mounting flange to fit into existing tank shell holes.

LW series dual-agent chambers combine both foam and dry-chemical applications to the internal fire. First a foam application will extinguish and secure the surface fire, then a secondary dry-chemical discharge dispels any residual flammable vapor above the foam blanket rendering the internal space inert thus allowing safe follow-up risk mitigation and recovery operations.  These dual agent chambers are modified Williams LW series foam chambers, each fitted with additional piping and discharge tips for dry chemical. Used around the perimeter of a storage tank at a spacing of 80 feet (24.4 m), the dual agent chamber works in tandem with this network of adjacent foam chambers to apply a powerful dry-chemical attack that eliminates residual flammable vapors in the space above the foam blanket. LW series dual-agent foam chambers are a simple retrofit.  It is compatible with the mounting dimensions and hardware for Williams LW series foam chambers.

LW Series Foam Chambers consist of a foam expansion chamber and an integral foam maker, defined by NFPA 11 as “Type II” top-side application device.  The foam chamber is installed inside a flammable liquid storage tank above the product’s highest liquid level.  The chambers are designed to meter foam flow, then gently expand and deliver foam directly onto the surface of a flammable or combustible liquid. The foam solution is piped to the chamber from outside the hazard area.  Upon entering the chamber, the foam solution is expanded and then discharged against a deflector inside the storage tank. The deflector directs the foam against the inside wall of the storage tank. This reduces the submergence of the foam and agitation of the fuel surface. In operation, foam solution passes through an orifice plate which is sized to deliver the required flow rate at a specific inlet pressure. The metered flow of foam solution is then introduced into the foam maker, where it is aerated. The foam chamber inlet piping is fitted with a frangible vapor seal, which is designed to rupture at a predetermined pressure. The aerated foam solution enters the foam expansion chamber body, where additional expansion occurs, and the velocity of the foam is reduced. As the foam leaves the chamber body, it passes through the tank shell, and then impacts the foam deflector, which directs the foam down the tank wall and ultimately onto the fuel surface. Foam deflectors are available in either split (as a standard) or shallow configurations. Split-style deflectors allow for installation when the deflector location is only accessible from outside the tank (existing tank installations), but can be used elsewhere. Shallow style deflectors are useful when only a small space between the foam dam or tank rim is available and a normal deflector may come into contact with part of the floating roof. All foam chambers are supplied with standard finish, primed with red epoxy exterior coating.

• توفر زمن استجابة للحدث أسرع
• تقلص القدرات البشرية اللازمة للإطفاء بالمقارنة بطرق الإطفاء باستخدام الوحدات المحمولة ذات معدلات التدفق المرتفعة
• تقلص معدلات التدفق اللازمة للإطفاء لأن لها كثافة تصميم أقل من طرق الإطفاء الأخرى التي تستخدم في نفس التطبيق
• تتطلب تدريبا أقل من حيث درجة التخصص بالمقارنة بطرق الإطفاء الأخرى التي تستخدم في نفس التطبيق
• تقلص عدد الأشخاص المعرضين للخطر أثناء مكافحة الحريق
  تصنع من الصلب المقاوم للصدأ طبقا للمواصفة رقم
• 316
• يتوفر منها 6 طرازات
• يحتوي الطراز رقم (3305) جهاز منفرد لإمداد المحلول الرغوي بالهواء اللازم للتمدد و يقذف الرغوة بعد التمدد في الاتجاه الأيسر والأيمن واتجاه الحائط
• تحتوي الطرازات الأخرى ذات الأرقام ( 4421 ، 5541 ، 6661 ، 8811 ) على ماسورة دخول مستقلة مزودة بجهاز إضافي لإمداد المحلول الرغوي
• بالهواء اللازم للتمدد ، كما أنها تقوم بقذف الرغوة في اتجاه مركز الخزان بدلا من اتجاه الحائط
• فلانشات دخول المياه والمحلول الرغوة من النوع ذو الأوجه المستوية والمصمم طبقا للفئة 150 حسب تصنيف المعهد الأمريكي للمواصفات القياسية الوطنية (ANSI) للفلانشات
• المداخل مغطاة بشبكة للحماية مصنوعة من الصلب المقاوم للصدأ
• مطلية بطلاء الإيبوكسي ذو اللون الأحمر القادر على تحمل الظروف الجوية