TRAILER VENTS and
TOW BALLS

50mm Trailer balls for European trailers

USA made 50mm trailer balls with 1" Stud mount including nut and lock washer
$33.95

SOLAR POWERED
DAY and DAY/NIGHT SOLAR VENTS
TRAILER VENTS ALLOW 24 HOUR VENTILATION
Unlike the Solar Vents from the past these new 24 hour solar ventilators actually operate even when the sun goes down and condensation, mold and mildew begin to form. During the day the solar cells operate the fan and actually recharge a simple nicad battery to power the ventilator all night long. Included Nicad battery has an expected life of up to 5 years and is easily replaced if it ever fails to charge. Inexpensive protection for your sailplane and instruments and stored equipment. Low 2" profile and measuring just 8 3/4" in diameter.The 3" solar vent can move up to 700 CFH while the 4" model is rated at 850CFH.
3" White ABS Plastic Day/Night Solar Vent
$139.95
4" White ABS Plastic Day/Night Solar Vent
$154.95

NEW! Round the clock 24 hour
POWERVENT

The POWERVENT differs from the Day/Night Vent by adding and internal shut-off from below (both models are waterproof )
and a DC switch to turn fan off and continue charging the Nicads.
The Powervent attaches permanently with 4 S/S screws.
Power vent is available in 4" size...$168.95
Now just $168.95

RE-SETTABLE WATER METER
Electronic Digital Water Meters
Simple - Small - Sturdy

This meter easily installs either in-line at at the end of a hose. The Large, easy-to-read display and compact lightweight design of rugged nylon and sealed electronic circuitry guarantees years of service life in almost any condition. Tow AAA batteries power the small microprocessor for a year and are easily replaced.*Calibrated at the factory to accurately measure water (*not for fuels)
Simple hose fittings (optional)

$1.50 each
 these and some other types are also available locally at most plumbing suppliers
DO NOT USE THIS METER FOR FUELS OR THE ERNST DIGITAL FUEL METER FOR WATER AS THESE VARYING LIQUID WEIGHTS WILL CREATE CERTAIN INACCURACIES IN MEASUREMENTS.
*Works well on any pump, pressure, or gravity feed system from 3 to 30 GPM (10-100LPM) flow range.
Flow Range: 3-30 GPM
 Rugged Construction
Designed for Indoor/Outdoor Use
Digital Display with Large 1/2" Tall Digits
Approximate Battery Life is 9,000 hrs
                                     Gallons                                  Liters
Model:                          318 01 N100                  318 01N100LM
Max.working pressure      100 psi                                  10.3 bar
Weight                               0.4 lbs.                                 190 grams
Dimentions.  4(W)x2.5(H)x2(D)inches     10.2(W)x55.1(H)x5.1(D) cm
The ideal meter to use when adding water ballast to almost any sailplane.
This simple and accurate (typical accuracy is within +/- 2.5%but can vary to +/- 5%) weighs less than 1/2 pound and is adaptable to any garden hose. The water meter is electronic and operates with flows as low as 3 GPM and may be reset to zero after each use......$159.95
 

NON RE-SETTABLE WATER METERS
DLJ Multi-Jet Water Meter
Low cost mechanical water meter with 1/2" pipe thread fitting

 Accuracy  within 1-1/2% - Proven Multi-Jet Water Meter Design, Dry Dial won't discolor or fade- hermetically sealed from the elements. Tempered Glass Lens for continued readability , Magnetic Drive - water is sealed from entering register. Large Pointer on Dial for indication by 1/10 of a gallon, Low flow indicator for flow rates down to almost drop by drop Odometer type totalizer to 9,999,999 gallons on our small meters, Frost Resistant Bronze Body - forged for strength and pinhole avoidance, Sealed Regulator port - preset for accuracy at factory Each meter marked with year of manufacture and serial number Integral Strainer in register chamber
Supplied with (2) 1/2" pipe adapters (lower right in image above)
$69.95
1/2" Pipe to 1" Hose adapters (pictured above left) optional $4.45 each*
1" Hose shut off valve (pictured above left) optional $6.55*
*also available locally at most plumbing suppliers

Water Meters With Garden Hose Thread Inlet & Outlet

This water meter features an easy-to-read odometer type reading in single gallons (down to the tenth) and an additional rotary dial with a sweep hand reading one tenth of a gallon per revolution with graduations down to 1/100 of a gallon (1.28 fl oz). Total registration on the water meter dial is up to 10 million gallons, but the meter will last much longer than that.This meter is quality constructed of nickel plated waterworks bronze according to ISO 4064 standards for accuracy, quality and length of service life. This water meter conforms to or exceeds all published US and European accuracy standards and will reliably detect usage down to a hundreth of a gallon.
model with garden hose swivel adaptors
$79.95

1" Hose shut off valve (pictured above left) optional $6.55*
*also available locally at most plumbing suppliers