Contromatics Three Piece Ball Valves

The Contromatics three-piece construction ball valve is a true in-line maintenance product, offering performance, versatility, and safety, at a reasonable cost. By simply removing the body bolts, the center section of the valve can be removed while still in the process line leading to quick and easy maintenance. A fully machined mounting pad on the center section of the body is standard on all sizes and eliminates the need to remove the body bolts when automating the valve. This important feature ensures the valve will be pressure tight and leak-free as tested by the factory. Available as standard in carbon or stainless steel, standard or full port, and with a variety of end connections and seat materials, the three-piece series can easily be tailored to your specific application.

FEATURE	BENEFIT
Bottom entry stem Adjustable packing gland Solid ball construction Pressure balanced ball High quality threaded end connections (ANSI B1.20.3) Three piece construction Enclosed body bolts Fully machined actuator mounting pad on body center section Standard or full port Optional end connections Optional seat/seal materials	Safety Long cycle life and ease of maintenance Structural integrity and higher flow capacity Prevents damage to seats due to thermal cycling Reduces potential for pipe connection leakage Ease of maintenance Ease of alignment Eliminates need to disassemble valve when mounting actuators Versatility Meet most demanding applications

The Automated Three-Piece Ball Valve

Contromatics offers a full line of pneumatic and electric actuators to fit your automation needs. The three piece ball valves have fully machined mounting pads on the center section of the body, ready for easy adaptation to our full line of actuation products. The following is a list of recommended actuators and mounting brackets for each valve size.

For additional information on actuators, see the following: F-PA/PAS - Pneumatics, double-acting and spring return F-PF - Power Flex Actuator, reversing F-EAC - Electric Actuator, unidirectional F-PA/AH - Pneumatic Actuator Accessories Handbook

Recommended Actuators for the 7400/8400 Series* Valve Size     Electric Electric   Std. Port Full Port Pneumatic Double Acting Pneumatic Spring Return Reversing 10 Sec/ NEMA 4, 7, 9 Unidirectional 8 Sec/ NEMA 4 Mounting Kit # --- 1/4, 3/8, 1/2" PA180 PAS180 PF400 EA 350 BMK25 3/4" --- PA180 PAS180 PF400 EA350 BMK26 1" 3/4" PA180 PAS180 PF400 EA350 BMK27 1-1/4" 1" PA400 PAS1000 PF400 EA350 BMK28 1-1/2" 1-1/4" PA400 PAS1000 PF400 EA350 BMK29 2" 1-1/2" PA400 PAS1000 PF400 EA350 BMK30 2-1/2" 2" PA1000 PAS1500 PF700 --- BMK30

*Sizing is based upon standard materials of construction, 80 PSI air, clean service.

Items shown below with three piece ball valve and associated hardware.
PF Electric Reversing	PA/PAS Pneumatic	EA350 Electric Unidirectional

Standard Design Features & Benefits

Bottom Entry Stem As safety is of primary concern, Contromatics utilizes a bottom-loaded stem in all ball valves. The stem is retained by a machined shoulder in the body of the valve that mates up to a shoulder on the stem. Stem Sealing Method A critical component of any valve is its stem sealing capability. Unlike many of our competitors, at Contromatics we exclusively employ a "packing gland" style stem seal design. The Contromatics stem seal design uses a compression force independent from the stem rotation and therefore results in much longer life. This compression is provided by a packing nut threaded into the body. Ball Construction Every Contromatics industrial valve is of a solid ball construction, which provides structural integrity and reduced flow turbulence not available when "hollow" or formed balls are used, resulting in higher CV values. There is a hole in the stem slot of each ball to equalize pressure between the body cavity and the flow stream. This feature prevents seat damage due to thermal cycling by allowing media trapped within the body cavity (between the outside of the ball and the inside of the body) to expand and re-enter the general flow stream through that drilled hole when the valve is in the open position. Optional Seat Materials Contromatics offers a variety of seat materials that are designed to meet the most demanding applications. Each seat material has its own performance characteristics enabling the user to tailor the valve to their specific application. A lower operating torque is realized by the use of pressure equalizing seats. The outside diameter of each seat is produced with slots that allow the media to flow around the upstream seat. This equalizes the pressure on both sides of the upstream seat, which results in the reduction of the torque required to operate the valve.

Threaded body style stem packing         Solid ball construction       Optional seat materials