Strainer with side-entry check valve

No, the Whale SB4222 strainer is designed only for bilge water pumping. It is not suitable for pumping flammable liquids, diesel, chemicals, or similar substances. Additionally, it must not be used in systems that discharge water through a through-hull fitting or a valve located below the waterline.

For correct installation of the Whale SB4222 strainer, the following points must be respected:

The strainer must be mounted on a bulkhead or an additional board, not directly on the boat’s hull. The mounting surface must have a minimum thickness of 18 mm. To ensure proper priming and optimal flow, sharp bends in the piping must be avoided. The entire piping system must include a non-return valve or a correctly installed loop.

The Whale SB4222 strainer is an accessory designed specifically for manual pumping and bilge draining. Its main function is to prevent the end of the suction hose from sticking to a flat surface, allowing the bilge water level to be reduced to a minimum and ensuring efficient pumping.

The Whale SB4222 strainer is designed to be installed at the end of a bilge pump suction hose. Its primary function is to prevent the hose end from suctioning against a flat surface, which could block the flow. It also helps minimize residual water levels in the bilge.

A side-entry valve on a strainer means water is drawn in through the sides of the strainer rather than from below. The integrated valve typically helps retain water in the suction line, making pump priming easier and preventing loss of prime.

Yes, the Whale SB4222 strainer is specifically designed for manual pumping and bilge drainage on boats. It is a recommended accessory for Whale manual bilge pumps, such as the Whale Gusher® 10 Mk3.

Using the Whale SB4222 strainer offers several advantages:

It prevents the suction hose from collapsing against a surface, blocking it.It minimizes bilge water levels to ensure thorough drying.It protects the pump by filtering out larger debris that could damage the pump mechanism.

Yes, as a strainer (strum box/strainer), the SB4222 includes a filtration function. It is designed to prevent debris from entering the suction pipe and the pump, thereby helping to maintain the efficiency of the pumping system.

The SB4222 strainer contributes to the longevity of the pumping system by acting as a protective barrier. By preventing debris and solid objects in the bilge water from being sucked into the pipe and reaching the pump, it reduces the risk of clogging, premature wear, or damage to the pump's internal components.

The Whale SB4222 strainer must be installed at the end of the bilge pump's suction hose. It is positioned in the bilge at the lowest point where water collects. The goal is to ensure it can effectively draw water without being obstructed by the bilge floor or other surfaces.

The integrated valve in the SB4222 strainer's primary function is to retain water in the suction line once pumping stops. This helps keep the line primed, making it easier to restart the pump and improving its efficiency by reducing the effort needed to reprime the system each time.

Although not explicitly detailed for the strainer itself, it is strongly recommended to use a stainless steel hose clamp to secure the suction hose to the SB4222 strainer. This ensures an airtight and secure connection, essential for efficient pumping and to prevent air leaks that could compromise pump priming.

The SB4222 strainer is a side-entry strainer, meaning it is designed to draw water through its sides. It must be positioned at the lowest point of the bilge to ensure maximum drainage. It is important to ensure that the side openings are not obstructed by the bilge floor or debris, allowing for unrestricted suction.

For optimal installation of the SB4222 strainer to ensure proper priming and flow:

Avoid sharp bends in the suction piping. Position the strainer at the lowest point of the bilge to minimize suction height. Use a reinforced hose on the inlet to prevent it from collapsing during suction. Ensure all connections are airtight.

When installing the SB4222 strainer, ensure that:

The connection between the strainer and the suction hose is perfectly airtight to prevent priming loss. The strainer is positioned so it is not blocked by debris or the bilge floor, ensuring free suction through its side inlets. The suction hose is not pinched or bent, which could restrict flow.

The Whale SB4222 strainer is an optional accessory recommended for Whale manual bilge pumps, including the Whale Gusher® 10 Mk3 (references BP3708 / BP3740). While designed to be versatile with manual pumping systems, its optimal compatibility is ensured with Whale pumps that use 38 mm (1 1/2") hoses.

The Whale SB4222 strainer is designed for use with pumps such as the Whale Gusher® 10 Mk3, which use 38 mm (1 1/2") hoses. Therefore, the recommended hose diameter for this strainer is 38 mm (1 1/2").

No, the SB4222 strainer is an accessory designed for bilge pumps, which are themselves intended solely to remove stagnant bilge water. It is not suitable for pumping fresh water, grey water, or other types of liquids.

No, the SB4222 strainer, as an accessory for Whale manual bilge pumps, is not designed for use in systems that discharge water through a through-hull fitting or hull valve located below the waterline. All discharge hoses associated with this type of system must include a properly installed anti-siphon valve or loop if the discharge point is below the waterline.

No, the Whale SB4222 strainer is designed for bilge water only. It is not suitable for pumping flammable liquids, diesel, chemicals, or other corrosive fluids. Using it with such liquids may damage the strainer and the pumping system, and pose safety hazards.