3/8" Flow Control Valve - Standard Series

Introduced in 1994 the original Jet Works Flow Control Valve provides improved throttle response and much quicker starts by drying out your waterbox at low rpm and idle speeds. Tests have shown an average acceleration improvement of 10 feet over a non-equipped model in the first 50 feet. Without a flow control valve water fills up the water box and exhaust hoses, upon sudden acceleration all of this water must be forced out quickly before full exhaust flow can occur. This can cause a craft to feel slight hesitation and/or sluggishness, easily adjustable by turning the hex portion of the valve. The Flow Control Valve allows unrestricted water flow to the Stinger for better top speed yet it controls the amount of water at low speeds for better response. It also allows for an easier tuning of the Carburetors. It does not interfere with normal engine or exhaust pipe cooling and is compatible with all electronic water injection systems. Race Legal for All Classes. Pressure can be tested with pop-off gauge. All PWC w/OEM or aftermarket exhaust systems (except Yamaha’s w/OEM exhaust).

Used by every Factory Team during the 2-Stroke Racing era including Kawasaki, Sea-Doo, Yamaha, and Polaris. The Jet Works Flow Control even came factory equipped on some Factory Pipe Products Exhaust systems and OEM on Polaris Watercraft. Used by many, recommended by all, the Jetworks Flow Control Valve is the best and most noticeable performance upgrade for the price.

Can be installed on any aftermarket exhaust system by using the water fitting on the stinger and can be used in conjunction with a restrictor such as the Jetworks Water Restrictor Kit.

* IJSBA race legal. 2015 Revised version allows for lower pop-off pressure. 

Ships via UPS or USPS Priority.  All "Open Box" items are excluded from our free shipping offer and are not returnable.

International Customers: Shipping charges reflect transportation costs only and do not include international brokerage fees, duties, GST/HST/PST, or other applicable taxes. Customers outside the United States may receive a separate invoice directly from the carrier for these additional charges.

If you receive an item that is defective or arrives damaged, please e-mail our Customer Service Department.

One of our customer service representatives will contact you with a few questions and may request that you email digital photos of the issue. If it is determined that the item damage/defect has NOT been caused by the shipping company, then the customer service representative will issue you an RMA# and assist you in exchanging your product(s).

If it is determined that the damage/defect has been caused by the shipping company, then our customer service representative will assist you in submitting a claim to the appropriate shipping company.

You must have an RMA# (Return Merchandise Authorization Number) to return a product to Atlantic Jet Sports. Returns must be initiated and shipped to us within 10 days of the original delivery date. Any package received without a valid RMA number will be refused at our shipping dock.

All returned items must be new, unused, unmodified, and in their original packaging, including all instruction manuals, hardware, and accessories that were included with the original shipment. Products that have been used, installed, or altered in any way are not eligible for return.

There will be a 20% restocking fee on all items returned to Atlantic Jet Sports. The items that are subject to this restocking fee are items that are being returned for reasons other than damage, defect, or items that were received as a result of an error by Atlantic Jet Sports. You have up to 10 days to return the item to us in the original packaging. You will be responsible for any shipping costs back to us for your return. * See note below for exclusions.

* PLEASE NOTE: All Seat Covers, Mat Kits, Mat Sheets, ChinPads, Waterboxes, Aqua Cart and Factory Zero Transportation/Beach Dollies/Totes/Display Carts and Transportation/Beach Dolly/Display Carts Parts and/or Accessories, Watercraft Stands, Aqua Performance Watercraft Steps, RRP Handlepoles, Special Order, Close-Out, Electrical Components (including but not limited to; Starter Motors, Regulators, Relays, CDI Units, Ignition Coils, Stator Coils, Stator Assemblies, Fuel Injectors) are non-returnable and are not eligible for exchanges or store credit.

All warranties are those of the manufacturer. We will be happy to assist you in placing a warranty claim with the manufacturer, but please remember that approving or denying a warranty claim is determined by the product manufacturer. Any modification to a product voids your warranty. All claims for consequential, physical, incidental, or special damage are hereby excluded.