Manually Operated 12″ Wet-R-Dri Butterfly Valve (non-TTMA)

The Betts 12” Wet-R-Dri Valve is a quarter turn in-line stop valve that is comparatively lightweight and compact for its large thru area. This easily maintained and versatile valve is widely used for liquid, gaseous or dry products.

The body is offered in aluminum or aluminum with stainless liner.  Body coatings are available for increased chemical resistance and extended service life.  Grease fittings come standard for drive shaft and bearing shaft.  The disc seal and shaft O-rings are available in a variety of materials to optimize chemical resistance and service temperature range.


Product Details

Assembly NumberWeightBody Material Maximum Working Pressure
WD1200AL*35.6 lbs.
(16.1 kg)
75 psi (5.17 bar)20 psi
(1.38 bar)
* Replace asterisk in part number to designate disc coating.

Example Assembly


(12″ Wet-R-Dri Aluminum + White FDA Nitrile)
Seal MaterialsTemperature Range
B = Black Nitrile (Buna-N)-40°F to +240°F (-40°C to +116°C)
WB = White FDA Nitrile (Buna-N)-40°F to +240°F (-40°C to +116°C)
V= FKM (Vitron™ A) Type A-0°F to +400°F (-17°C to +204°C)
U = Black Urethane-40°F to +200°F (-40°C to +93°C)
Not all materials are available for every size. Actual temperature values may vary due to service conditions.


Repair Kits and Accessories

Repair Kits Wet-R-Dri Valve

Additional Options

Betts prides itself in being able to provide products that meet a customer’s specific needs. As a result we do offer modifications to our product standards. While not every request is always feasible, we do our best to meet your specific needs. In many cases this modification is noted by adding a suffix to the end of the standard part number.  The following is a non-inclusive list of common options that are available for this product line .  If the options listed below do not meet your requirements please contact one of Betts’ Customer Service Representatives for further assistance. Please note that some product modifications may result in extended lead times.

Commonly used suffixes (add to end of assembly number):
= E-coated valve body
= Valve less handle
 = SS shafts w/ SS valve liner
= Less handle with E-coated body
 = SS shafts w/ SS valve liner with E-coated body

Installation & Maintenance

Installation: The Wet-R-Dri Valve may be mounted in any position.  Care should be taken when mounting valve to be sure the I.D. of adjoining flanges or pipe is large enough to allow the disc of the valve to open freely.

Engineering Bulletins

EB-02-17: Wet-R-Dri Valve Product Family Changes and New Product Introduction

SB9-08: Wet-R-Dri Valve Viton® Disc Material Update