{"id":17670,"date":"2020-12-02T14:42:07","date_gmt":"2020-12-02T14:42:07","guid":{"rendered":"https:\/\/www.perimeter-solutions.com\/?page_id=17670"},"modified":"2026-03-30T13:18:29","modified_gmt":"2026-03-30T17:18:29","slug":"proportioning-devices","status":"publish","type":"page","link":"https:\/\/www.perimeter-solutions.com\/en\/comprehensive-equipment-solutions\/proportioning-devices\/","title":{"rendered":"Proportioning Devices"},"content":{"rendered":"\t\t
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Proportioning Devices<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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When it comes to Proportioning Devices, Perimeter Solutions has the hardware you need to get the job done right\u2014no matter what type of foam system you\u2019re operating.<\/p>

Foam Pump Proportioner
<\/strong>The Perimeter Solutions Foam Pump Proportioner (SFPP) is a low-foam solution proportioning device, designed to accurately proportion the foam concentrate into the water stream at both high and low system flow rates. The Perimeter Solutions Foam Pump Proportioner is designed as an integral component of the Perimeter Solutions Foam Pump Proportioning System. The pump proportioner is designed for open and closed head foam\/water sprinkler systems, foam monitor systems, and other Perimeter Solutions foam discharge devices. Please consult product datasheet for complete details.<\/p>

Inline Balanced Pressure Proportioners
<\/strong>The Perimeter Solutions Inline Balanced Pressure (ILBP) proportioner is a complete self-contained device that incorporates the necessary components, including ratio controller, duplex gauge, balancing valve, check valve, ball valve, and associated brass piping. Perimeter Solutions\u2019 ILBPs are designed to balance the incoming foam concentrate pressure with the incoming fire-water pressure, and meter the correct amount of foam concentrate to the fire-water stream over a wide range of flow rates and pressures.<\/p>

The ILBP system works with a positive displacement foam pump, to supply foam concentrate to the ILBP. A pressure sustaining valve, located in the return line, carries excess foam concentrate not needed by the device back to the atmospheric storage tank. Devices are available in sizes: ranging from 2.0″ – 8.0″, (51 mm – 203 mm).<\/p>

Foam Ratio Controllers
<\/strong>Perimeter Solutions Ratio Controllers are a modified venture device designed to meter the correct amount of foam concentrate into a water stream over a specified range of flow and pressure rates with minimal pressure loss. The ratio controller consists of three components: the body with water inlet, metering orifice located in the foam concentrate inlet, and throat (nozzle) located downstream from the water inlet. The ratio controller is manufactured in four sizes: 3.0″, 4.0″, 6.0″, and 8.0″ (76 mm, 102 mm, 152 mm, 203 mm).<\/p>

S-ZF Between Flange Inductors
<\/strong>The Perimeter Solutions S-ZF Inductor is used to mix foam concentrate with water when the foam concentrate is supplied from a tank at atmospheric pressure. The S-ZF inductor can be installed in deluge systems where sprinklers are used, such as aircraft hangars and storage facilities. The inductor(s) are connected to the water line. The S-ZF is installed inside the pipe work between two flanges. The S-ZF works using the venturi principle. Both low- and high-viscosity foam concentrates can be used with the S-ZF.\u00a0<\/strong><\/p>

Threaded Proportioner
<\/strong>Perimeter Solutions Threaded Proportioners are modified venturi ratio controllers that accurately mix and meter foam concentrate into fire-water streams. Each proportioner consists of the following components: body, inlet nozzle, and metering orifice constructed out of ASTM 85-5-5-5 bronze material. The proportioner is designed with a male NPT threaded inlet and a male threaded outlet in sizes of 2.0″ (51 mm) and 2.5″ (64 mm), with the flow direction arrow clearly marked. During operation, water flows through the modified venturi to create an area of lower pressure, which is directly affected by the water velocity as it flows through the ratio controller.<\/p>

Variable Range Proportioner
<\/strong>The Perimeter Solutions Variable Range Proportioner is a low-foam solution proportioning device, designed to accurately proportion the foam concentrate into the water stream at both high- and low-system flow rates. It is designed as an integral component of the Perimeter Solutions Bladder Tank proportioning system, to be used with Perimeter Solutions foam concentrates in foam-water sprinkler systems. Our Variable Range Proportioner complies with NFPA 30, the Flammable and Combustible Liquids Code, Paragraph 16.5.1.6.2, which states that foam\/water sprinkler systems are to provide foam solution to operating sprinklers with 4 sprinklers flowing. The Perimeter Solutions Variable Range Proportioner was designed to meet this Code requirement.<\/p>

Variable Range Pump Proportioner
<\/strong>The Perimeter Solutions Variable Range Pump Proportioner (SVRPP) is a low-foam solution proportioning device, designed to accurately proportion the foam concentrate into the water stream at both high- and low- system flow rates. It is designed as an integral component of the Perimeter Solutions Foam Pump Proportioning System, to be used with Perimeter Solutions foam concentrates in foam-water sprinkler systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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FOAM PUMPS<\/strong>
Foam Pump Proportioner<\/a><\/p>

INLINE BALANCE PRESSURE<\/strong>
Inline Proportioner<\/a><\/p>

RATIO CONTROLLERS<\/strong>
Foam-Ratio-Controller<\/a><\/p>

S-ZF INDUCTORS<\/strong>
SZF Inductor<\/a><\/p>

THREADED PROPORTIONERS<\/strong>
Threaded Proportioner<\/a><\/p>

VARIABLE RANGE PROPORTIONERS<\/strong>
Variable Range Proportioner<\/a><\/p>

VARIABLE RANGE PUMP PROPORTIONERS<\/strong>
Variable Range Pump Proportioner<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Proportioning Devices When it comes to Proportioning Devices, Perimeter Solutions has the hardware you need to get the job done right\u2014no matter what type of foam system you\u2019re operating. Foam […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":17652,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-17670","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nProportioning Devices - Perimeter Solutions<\/title>\n<meta name=\"description\" content=\"When it comes to Proportioning Devices, Perimeter Solutions has the hardware you need to get the job done right.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.perimeter-solutions.com\/en\/comprehensive-equipment-solutions\/proportioning-devices\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Proportioning Devices\" \/>\n<meta property=\"og:description\" content=\"When it comes to Proportioning Devices, Perimeter Solutions has the hardware you need to get the job done right.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.perimeter-solutions.com\/en\/comprehensive-equipment-solutions\/proportioning-devices\/\" \/>\n<meta property=\"og:site_name\" content=\"Perimeter Solutions\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-30T17:18:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.perimeter-solutions.com\/wp-content\/uploads\/2020\/12\/RatioController-9455.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.perimeter-solutions.com\/en\/comprehensive-equipment-solutions\/proportioning-devices\/\",\"url\":\"https:\/\/www.perimeter-solutions.com\/en\/comprehensive-equipment-solutions\/proportioning-devices\/\",\"name\":\"Proportioning Devices - 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