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Bilge pump Accessories

Rule-A-Matic Float Switch

Rule rule A Matic float switch

Year after year, the Rule-a-Matic has been the switch of choice for boaters the world over. Our latest design now includes a removable base for easy cleaning and servicing, a mercury-free snap switch tested to over one million cycles and marine-grade blocked wire. Designed for pumps drawing up to 14 amps at 12 volt DC. Models 35A and 35FA include a two-year warranty


Model Description Volts Amps Wire Gauge Size (mm) Price
35A Rule a Matic 12V-24V 14A(12V)
7A(24V)
16 AWG 57 x 127 x 58 60.68 €
35FA Rule a Matic, with in-line fuse holder 12V-24V 14A(12V)
7A(24V)
16 AWG 57 x 127 x 58 84.93 €

SuperSwitch Float Switch

Rule Super Switch float switch

Backed by a five-year warranty, the non-mercury SuperSwitch is designed for the toughest applications. Design includes marine-grade, 14 gauge blocked wire, a larger float for increased buoyancy, removable base for easy servicing and a snap switch design capable of handling pumps drawing up to 20 amps at 12 volt DC. Models 37A and 37FA include a five-year warranty.


Model Description Volts Amps Wire Gauge Size (mm) Price
37A Superswitch 12V-24V-32V 20A(12V)
10A(24V)
6.5A(32V)
14 AWG 57 x 127 x 51 112.14 €

Rule A Matic Plus Float Switch

Rule A Matic Float Switch

Sleek and rugged, the Rule-a-Matic Plus Float Switch has a strong, fully integrated and impact-resistant cover, which protects against debris and jamming. Design includes 14 gauge highly abrasive-resistant, marine-grade wire and a built-in test feature. Designed for pumps drawing up to 20 amps at 12 volt DC. Models 40A and 40FA include a two-year warranty.


Model Description Volts Amps Wire Gauge Size (mm) Price
40A Rule A Matic Plus with shield 12V-24V-32V 20A(12V)
10A(24V)
6.5A(32V)
14 AWG 76 x 137 x 64 93.94 €

ECO-Switch

Rule Eco Switch

The Rule ECO-Switch is an ecologically sound automatic bilge pump control switch. Featuring a non-mercury design, the pump operates with simple air pressure. As water rises in the bilge, air rises in the air tube that is attached to the switch. The air pressure activates the switch which controls your pump. All wiring is out of the water, and there are no submerged electrical connections at all. Offering complete reliability and outstanding performance, the Rule ECO-Switch offers a viable alternative to traditional float switches. For pumps drawing up to 20 amps.


Model Description Volts Amps Wire Gauge Size (mm) Price
39 ECO-Switch 12 volt 12V 20A 14 AWG 48 x 152 x 70 126.98 €
39-24 ECO-Switch 24 volt 24V 10A 14 AWG 48 x 152 x 70 129.52 €

3-Way Panel Lighted Switch

3 way bilge switch

For use with any automatically controlled pump. Toggle has three positions (automatic, off or manual) and a fail safe spring return to off from the manual position. Panel is black stainless steel with a red indicator light and fuse holder.


Model Description Volts Amps Size (mm) Price
41 3-Way Panel Switch Lighted 12V 20A 83 x 51 71.98 €
42 3-Way Panel Switch Lighted 24V, 32V 10A (24V)
6.5A (32V)
83 x 51 78.06 €

3-Way Panel Switch

3 way bilge switch

Similar to the Lighted Panel Switch, but without the indicator light or fuse holder. The manual position has a fail safe spring return to off so you can not leave your pump running by accident. Black stainless steel panel.


Model Description Volts Amps Size (mm) Price
45 3-Way Panel Switch 12V,24V,32V 20A(12V)
10A(24V)
6.5A(32V)
57 x 51 54.99 €

3-Way Panel with Lighted Rocker Switch

3 way rocker bilge switch

For use with any automatically controlled pump. This unit features a black plastic panel, a built-in fuse holder, an internally lighted rocker switch with three positions (automatic, off or manual) and the Rule fail-safe spring return to off from the manual position.


Model Description Volts Amps Size (mm) Price
43 3-Way Rocker Panel Switch Lighted 12V 20A 73 x 60 77.86 €
44 3-Way Rocker Panel Switch Lighted 24V 10A 73 x 60 83.90 €

2-Way Panel Switch

2 way bilge switch

Attractive black stainless steel panel highlights your control panel. Simple on and off toggle provides fingertip control.


Model Description Volts Amps Size (mm) Price
49 2-Way Panel Switch 12V, 24V, 32V 20A(12V)
10A(24V)
6.5A(32V)
57 x 51 50.41 €

High-Water Bilge Alarms

Rule high water bilge alarm

The High-Water Bilge Alarm consists of a float switch and an in-dash gauge that features both a visual and audible 85 db alarm. This unit allows an unmanned compartment to be constantly monitored. For additional compartments, add additional Rule Float Switches. Complies with CFR 182.530, which requires a visual and audible alarm in each unmanned space on commercial vessels at least 26' (7.9m) in length.


Model Description Volts Amps Size (mm) Price
33ALA 12V 20A(12V) 57 x 127 x 51 161.54 €
32ALA 24V 10A(24V) 57 x 127 x 51 165.07 €

Vented Loops

Jabsco vented loops

For use in bilge pump installations to prevent siphoning of water back into boat from through hull. Duckbill one-way valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water passes through.


Model Description Price
29015-0000 3/4" (19mm) Vented Loop 60.45 €
29015-0020 1" (25mm) Vented Loop 104.81 €

Bilge Strainers

Bilge strainer

Stop bilge debris from blocking inlet suction hose and reduce the risk of debris entering and blocking the pump. Non-return valve fitted to stop bilge water draining back when pumping stops. Repositionable ports allow horizontal, vertical or sideways hose attachments. Easily removable strainer plate for cleaning. Corrosion-resistant materials throughout.


Model Description Size (mm) Weight Price
29290-1020 Bilge Strainer for 3/4" (19mm) ID hose 170 x 72 x 60 0.25lb (0.1kg) 46.02 €
29290-1000 Bilge Strainer for 1" (25mm) ID hose 170 x 72 x 60 0.25lb (0.1kg) 40.80 €
29290-1010 Bilge Strainer for 1-1/2" (38mm) ID hose 170 x 72 x 60 0.25lb (0.1kg) 44.62 €

In-Line Non-Return Valves

inline non return valve

Non-return valves fit in a pumps suction hose to aid priming and prevent backflow of water into the bilges. Available for three hose sizes 3/4", 1" and 1-1/2" (19mm, 25mm and 38mm). Simply fit into suction hose. Corrosion-resistant materials throughout.


Model Description Size (mm) Weight Price
29295-1011 In-Line Non-Return Valve for 3/4" (19mm) ID hose 108 x 55 x 50 0.25lb (0.1kg) 40.80 €
29295-1000 In-Line Non-Return Valve for 1" (25mm) ID hose 108 x 55 x 50 0.25lb (0.1kg) 40.80 €
29295-1010 In-Line Non-Return Valve for 1-1/2" (38mm) ID hose 108 x 55 x 50 0.25lb (0.1kg) 40.80 €

Bilge Pumpgard Strainer

Bilge pump guard strainer

Strainer protects all electric diaphragm bilge pumps. Prevents unnecessary pump breakdowns caused by particles in the water. Transparent housing allows instant inspection. 46200-0000 model installs in-line between bilge pickup and pump. Quick, in-place cleaning of the 20# mesh stainless steel screen.


Model Description Size (mm) Weight Price
46200-0000 Model for 3/4" (19mm) ID hose 120 x 70 x 60 0.5lb (0.2kg) 37.75 €
46200-0010 3/4" (19mm) ID hose x plug-in 90 Degrees 120 x 70 x 60 0.5lb (0.2kg) 39.77 €
18753-0020 Replacement 20# Mesh Filter - - 21.01 €

Y-Valve

Y valve

Robust Y-Valve for use in bilge applications. Allows two bilge sections to be emptied by one pump. Rotating ports allow routing of hoses onto the valve from almost any direction. Can be operated through bulkhead by use of optional handle extension. Waste and corrosion-resistant construction throughout. Can be padlocked.


Model Description Size (mm) Weight Price
45490-1000 Y-Valve 200 x 190 x 120 2lb (0.9kg) 159.65 €
45500-1000 Handle Extension Kit - - 20.91 €
45493-0000 Replacement Handle - - 21.54 €
18753-0661 Replacement Ports Kit - - 42.05 €
45488-0000 Service Kit - - 37.89 €

Bilge Strainers with Non-Return Valves

Bilge strainer with non return valve

Stop bilge debris from blocking inlet suction hose and reduce the risk of debris entering and blocking the pump. Non-return valve fitted to stop bilge water from draining back when pumping stops. Repositionable ports allow horizontal, vertical or sideways hose attachments. Easily removable strainer plate for cleaning. Corrosion-resistant materials throughout.


Model Description Size (mm) Weight Price
29290-1020 Bilge Strainer for 3/4" (19mm) ID hose 170 x 720 x 60 0.25lb (0.1kg) 46.02 €
29290-1000 Bilge Strainer for 1" (25mm) ID hose 170 x 720 x 60 0.25lb (0.1kg) 40.80 €
29290-1010 Bilge Strainer for 1-1/2" (38mm) ID hose 170 x 720 x 60 0.25lb (0.1kg) 44.62 €





Tel: +34 952 802643
Email: mail@mds-nautica.com
Marina del Sol de Estepona SA
Plaza de Levante 35/37
Puerto Deportivo
Estepona 29680
Malaga España
Tel: +34 952 802643
Email: mail@mds-nautica.com