Product Digest
This month's topic Valves
Shut-Off Valve is Suitable for Demanding Environments
With no wetted metals or external fasteners, this 1/2-in. air-operated shutoff valve can be used in high-purity or corrosive environments. Designed for liquid service at pressures ranging from full vacuum to 150 psi, the valve’s outlet pressure (backpressure) can be as high as the inlet pressure without affecting performance. The internal metal springs are isolated from the process liquid by redundant seals made of either Viton or EPDM. Body materials are polypropylene or polyvinyl chloride.
Appeared In Issue: May 2005
Plast-O-Matic Valves, Inc.
www.plastomatic.com
Single-Flange Assemblies Provide a Compact Solution
Kenmac series process monoflange assemblies replace multi-valve assemblies with a single manifold. This compact design minimizes potential leak points, reduces stress from loading and vibration, and can reduce installation and maintenance time. Block, block-and-bleed, and double block-and-bleed flanged manifolds are available, in bolted bonnet, outside screw and yoke (OS&Y) bolted bonnet, and integral screwed needle valve designs. A two-valve isolating and venting gauge block monoflange is available for instrumentation applications. All are rated for working pressures of 150 lb class to 2,500 lb class according to ANSI B16.5.
Appeared In Issue: May 2005
Swagelok Co.
http://www.swagelok.com
Valves are Engineered for Reliability
O-Seal valves have a complete interchangeable valve cartridge with a removable seat, which enables the user to change from any of the four basic O-Seal cartridge designs without compromising leakproof reliability. These shutoff, needle, check and stop-check valves are rated to 6,000 psi and will function from –65°F to 400°F, depending on the seal material selected. They are available in pipe sizes from 1/8 in. to 2 in. and tube sizes from 1/4 in. to 2 in.
Appeared In Issue: May 2005
CPV Manufacturing, Inc.
www.cpvmfg.com
Circuit Balancing Valves Come in Low-Flow Models
Available in 1/2-in. and 3/4-in. models that can handle flowrates as low as 0.26 gal/min and 0.4 gal/min, respectively, these new ARMflow venturi-style balancing valves are significantly more accurate than conventional balancing valves. They require five full 360-deg. turns from open to closed, and their non-rising handle ensures that overall valve height remains the same from fully open to completely closed. They can be installed with the measuring ports facing up or down.
Appeared In Issue: May 2005
Armstrong Pumps
www.armstrongpumps.com
Valve Reduces Pressure in a Single Stage
The DR20 is a compact, lightweight pressure-reducing valve for use with any small to moderate steam requirement. A flow-up design and a flat valve and plug arrangement promote secondary pressure stability. The stability augments the pressure-reduction capability to allow the DR20 to reach a turnover of 30:1, virtually eliminating the need for twostage pressure reduction. Stainless steel construction gives it durability and corrosion resistance for long service life, and a built-in screen ensures extended trouble-free operation.
Appeared In Issue: May 2005
TLV Corp
http://www.tlv.com
Valve Controls Feeding of Water Treatment Chemicals
The Superior Series 2000 Autovalve provides automatic flow proportioning, residual and compound loop control of chlorine, sulfur dioxide or ammonia gas, an advantage for water and wastewater treatment facilities with varying water flowrates and/or residuals. The valve has a simple menu-driven operator interface panel, and requires only a 4–20-mA signal from a water flowmeter and/or residual analyzer, a 120/240-VAC power supply, and a gas chlorinator, sulfonator or ammoniator. Chemical Injection Technologies, Inc.
Appeared In Issue: May 2005
Chemical Injection Technologies, Inc.
www.chlorinators.com
Ball Valve Produces Gradual Flow Change
A unique ball design creates a gradual change in flow direction, unlike the sudden change typical with traditional ball-valve styles. With each turn, the flow increases or decreases linearly, rather than exponentially, which provides better control. The new ball design, available as an option of the new Type 546 ball valve, features all-plastic construction, with material choices that include polyvinyl chloride (PVC), chlorinated PVC, polypropylene and polyvinylidene fluoride. Manual and actuated versions are available in sizes from 1/2-in. to 2-in.
Appeared In Issue: May 2005
George Fischer, Inc.
http://www.us.piping.georgefischer.com