Potable Water Flow Restrictors

We are pleased to offer a full selection of stainless steel inline flow restrictors ranging from 1.5 gallons per minute to 26.1 gallons per minute that can be used to retrict water flow rates in potable water treatment applications.

These restrictors are commonly used to restrict water flow rates for UV sterilizer applications to ensure that the target UV dose is met. Compatible with Viqua, Trojan, Sterilight, and all other brands of UV sterilizers. Flow restrictors are used to ensure that the maximum flow ratings of ultraviolet (UV) sterilizers are not exceeded, thereby ensuring that an adequate UV dose is always maintained. We recommend that you select a restrictor that has a GPM restriction rating equal to or less than the maximum flow rate of your UV sterilizer based on a UV dose of 40 mJ/cm2.

All Viqua brand restrictors use NSF-61 approved Neoperl inserts.


Model	Material	GPM Restriction Rating	Fittings	Applicable UVMax Models	Applicable Sterilight Models	Price
Viqua FRSS-3.5 Flow Restrictor	316 Stainless Steel	3.5 GPM	1/2" x 1/2" FNPT			List Price: US$87.00 Our Price: US$42.00 You save: $45.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-4.3 Flow Restrictor	304 Stainless Steel	4.3 GPM	3/4" x 3/4" FNPT		S5Q-PA	List Price: US$121.00 Our Price: US$54.00 You save: $67.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-6-34 Flow Restrictor	304 Stainless Steel	6.0 GPM	3/4" x 3/4" FNPT		VH200	List Price: US$121.00 Our Price: US$54.00 You save: $67.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-6 Flow Restrictor	316 Stainless Steel	6.0 GPM	1" x 1" FNPT	E4-50+	VH200	List Price: US$121.00 Our Price: US$54.00 You save: $67.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-8 Flow Restrictor	316 Stainless Steel	8.0 GPM	1" x 1" FNPT	E4-50+		List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-8.9 Flow Restrictor	304 Stainless Steel	8.9 GPM	3/4" x 3/4" FNPT	D4 D4+ D4 Premium IHS10-D4 IHS12-D4 IHS22-D4	S8Q-PA	List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-10 Flow Restrictor	304 Stainless Steel	10.0 GPM	3/4" x 3/4" FNPT			List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-12 Flow Restrictor	316 Stainless Steel	12.0 GPM	1" x 1" FNPT	F4-50+	VH410 VH410M	List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-15 Flow Restrictor	316 Stainless Steel	15.0 GPM	1" x 1" FNPT	E4 E4+ IHS22-E4		List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-15.8 Flow Restrictor	316 Stainless Steel	15.8 GPM	1" x 1" FNPT	E4 E4+ IHS22-E4		List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-20 Flow Restrictor	316 Stainless Steel	20.0 GPM	1" x 1" FNPT		VP600 VP600M	List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat
Viqua FRSS-26.1 Flow Restrictor	316 Stainless Steel	26.1 GPM	1" x 1" FNPT	F4 F4+		List Price: US$126.00 Our Price: US$107.00 You save: $19.00 Found a Lower Price? Request a Price Beat