Elfab Limited
Tyne & Wear NE29 8SD  United Kingdom
Sep 01, 2005 Designed to prevent environmental contamination in severe process conditions, Double-Disc Opti-Gard comprises primary and secondary rupture discs, as well as pressure gauge or switch to monitor space between discs. In event of chemical attack causing pinholing of primary disc, back-up prevents pollution of environment, while intermediate pressure sensor warns maintenance teams. Disc is corrosion-resistant Hastelloy C267 and features ±5% tolerance.

ControlAir Inc.
Amherst, NH 03031 2315
Aug 17, 2005 Type 3500 High Pressure Regulator reduces inlet pressures from as high as 6,000 psig down to working pressures from 0–225 psig. Designed to be used in applications with various gases, self-operated unit is offered with choice of 3 output ports to facilitate hookup. Product features replaceable nylon valve seat and provides outlet pressure in 3 spring ranges: 0–125, 0–150, and 0–225 psig. Socket head or tee handle adjustment is available.

TLV Corporation
Charlotte, NC 28273
Jul 01, 2005 Direct-acting DR20SF PRV, available with 316L stainless steel wetted parts, is suited for pure and clean steam applications. Available in ½, ¾, and 1 in. NPT sizes, valve features Class 4 seat leakage rating for tight shutoff. Flow-up design, as well as flat valve and plug arrangement, lend to secondary pressure stability. Able to reach pressure reduction ratio of 30:1, product features inline access to internal parts and reusable PTFE gaskets.

SMC Corporation Of America
Indianapolis, IN 46226
Jun 14, 2005 Compact Manifold Regulators Series ARM10/11 enables mounting of multiple units in control panel or on DIN rail. Units include built-in pressure gauge with 2 pressure ranges, straight and elbow type push-in fittings, integral isolation valve, and integral pressure switch to monitor inlet pressure to manifold. Available with top or front facing control knobs, ARM10 single unit regulator has same functions as ARM 11 manifold regulator, and is suited for panel mounting.

SMC Corporation Of America
Indianapolis, IN 46226
May 19, 2005 Model ASR Pressure Valve consists of regulator with check valve and speed controller, while Model ASQ Flow Valve combines quick supply/exhaust valve and speed controller. Body and one-touch fitting allow 360° rotation. Fixed set pressure type and variable set pressure type are available. Both valves can cut air consumption by operating return stroke at minimized pressure, preventing jerky movement of working stroke and operation delay in return stroke.

Beswick Engineering Co., Inc.
Greenland, NH 03840
May 13, 2005 Measuring 18 mm in diameter, single-stage diaphragm Model PRDB-18MM-A-B-C is offered with 2 inlet and 2 outlet ports, allowing inlet and outlet lines to be connected in 4 different configurations. Regulator controls output pressures from 0–20 psig and is suited for low pressure regulation, even below 1 psig. Maximum rated inlet pressure is 300 psig. Four M3 tapped ports can be plugged with M3 screw plugs when not in use.

ControlAir Inc.
Amherst, NH 03031 2315
Apr 29, 2005 Miniature Electropneumatic Type-550X converts variable signal to proportional pneumatic output. Built-in volume booster provides up to 20 scfm air flow capacity. Standard and zero-based units utilize input signal of 4–20 mA. Output pressure for standard range includes 3–15, 3–27, 6–30, 2–60, and 3–120 psig, while zero-based range outputs include 0-30, 0-60, and 0-120 psig. Regulator features NEMA 4X housing and is approved for intrinsically safe applications.

Oseco, Inc., A Halma Group Co.
Broken Arrow, OK 74012-1449
Apr 11, 2005 Offered in sizes from 1–4 in., Model S-PRO-S combines bursting disk and sensor into single assembly with range of burst pressures from 16–150 psig. When disk bursts, sensor’s circuit is broken, triggering activation of alarm. Placement of sensor and disk scoring on vent side present smooth surface to process, minimizing product build up. Non-fragmenting design prevents contamination from rupture disk pieces entering process after bursting.

Beswick Engineering Co., Inc.
Greenland, NH 03840
Mar 15, 2005 With body height of 35/64 in., single-stage VRD-ANB-CD features design that permits in-line mounting without need for panel mounting; panel mount thread is optional. Product weighs 30 g in brass and stainless steel and features 10-32 UNF inlet and outlet ports as well as Buna-N seals. Suited for low-vacuum regulation, such as -½ psig, regulator controls output vacuum from 0 psig to full vacuum.

TLV Corporation
Charlotte, NC 28273
Jan 21, 2005 Direct-acting, stainless steel Model DR20 provides air pressure reduction and shut-off, and can be utilized in gas applications including CO₂ and N₂. Class 4 seat leakage rating ensures tight shut-off, while 30:1 turndown ratio provides close pressure control with 2-stage reduction. Stainless steel bellows-sealed design prevents fugitive emissions. Sizes include ½, ¾, and 1 in. NPT.

Oseco, Inc., A Halma Group Co.
Broken Arrow, OK 74012-1449
Dec 23, 2004 For processes that operate under vacuum conditions, rupture disks with vacuum support ensure that disk does not collapse under differential back-pressure and operates correctly. One-piece vacuum support eliminates potential failure sites and has smooth design that reduces accumulation. Rupture disks are suited for agricultural/bulk powder, aerospace, chemical, gas, petroleum, pharmaceutical, and power applications.

Oseco, Inc., A Halma Group Co.
Broken Arrow, OK 74012-1449
Dec 23, 2004 Fluoropolymer-booted insert holder is constructed with solid PTFE resin insert pressed into inner diameter of stainless steel holder. When used with fluoropolymer lined rupture disk, only fluoropolymer is in contact with corrosive media. Available in sizes from 1–8 in., non-torque-sensitive, flat-seated holder bolts between standard ANSI pipe flanges. It is compatible with forward acting and reverse buckling disk designs, and is suitable for applications up to 500°F.

Beswick Engineering Co., Inc.
Greenland, NH 03840
Dec 21, 2004 Diaphragm pressure regulator Model PRD controls output pressures from 0–40 psig, with maximum rated inlet supply pressure of 300 psig. Both inlet and outlet ports are tapped 10–32 UNF. Suited for gas and pnemuatic applications, non-relieving, single-stage regulator is offered in brass, anodized aluminum, 303 stainless steel for corrosion resistance, and 316 stainless steel for high purity applications. Unit can be mounted inline or panel mounted.

Proportion-Air, Inc.
McCordsville, IN 46055
Dec 03, 2004 Housed in IP65 enclosure, Series QPV provides high resolution pressure control. Output pressure is proportional to electrical command signal input and is unaffected by changes in supply pressure. Pressure is controlled by 2 solenoid valves; inlet valve operates proportionally to flow required to maintain system pressure. Variable orifice effect allows precise control of pressure at low flow conditions and avoids digital steps of ON/OFF solenoids.

Proportion-Air, Inc.
McCordsville, IN 46055
Dec 02, 2004 Model QB3 incorporates electronic pressure sensor that detects downstream pressure at work port for accurate regulation. Replaceable O-rings for intake and exhaust valve are set into groove that captures O-ring, but leaves room to move slightly and seal correctly for positive shut-off. Regulator accepts 0-10 V or 4-20 mA command signal and provides analog output that corresponds to actual pressure.

CONCOA
Virginia Beach, VA 23454
Sep 22, 2004 Incorporating M² technology, Series 601 eliminates atmospheric contamination during resonator gas cylinder exchange. Smooth flow paths do away with dead space as potential entrapment sites for moisture or hydrocarbons, facilitating stable emission. With operating temperature of -40 to 140°F, series offers PTFE seat for 3,000 psig or Kel-F® seat for 4,500 psig. Stable flow and pressure control is maintained via 2 stages of regulation.

Oseco, Inc., A Halma Group Co.
Broken Arrow, OK 74012-1449
Aug 09, 2004 PRO+ Rupture Disk features 95% operating ratio to guard against fatigue and premature disk rupture for both gas and liquid services. It operates without using cutting teeth. One-piece design and smooth surface prevent product buildup. With burst pressures from 8–750 psig, disk is compatible with wide range of applications and performs consistently in high- and low-pressure environments.

ControlAir Inc.
Amherst, NH 03031 2315
Jul 12, 2004 Multi-Station, Digital-to-Pneumatic Type 5500 uses common air supply to provide electronic proportional control of output pressure from any combination of 4, 6, or 8 station units through use of DeviceNet communication protocol. Output ranges include 3-15, 3-27, 6-30, 2-60, and 3-120 psig. Maximum supply pressure is 150 psig, and temperature limits range from -20 to 150ºF. Built-in volume boosters provide flow capacity up to 20 scfm. Unit is wall or DIN rail mounted.

Scott Specialty Gases
Plumsteadville, PA 18949 0310
Jul 06, 2004 Model 8404L Liquid ChangeOver Regulator System provides uninterrupted flow of specialty gases by directing flow from 2 separate dewars to point of use. When one source empties, system automatically draws from second source. Gas Saver circuit directs reserve dewar’s accumulated head gas pressure to primary source where it can be used. Featuring powder-coated steel chassis, Model 8404L is recommended for high-purity and non-corrosive applications.

Tescom Corp., Industrial Controls Div.
Elk River, MN 55330
Jun 29, 2004 Series 26-2500 combines high flow capacity of Cv=5.0 and low controlled pressures of 0-20, 0-50, 0-125, or 0-200 psig. Unit features bubble-tight shutoff at all repeating pressures and close pressure differential between crack and reseat. Gylon® diaphragm provides sensitivity to adjust for fluctuating system pressures. Dome loading and 316 stainless steel or brass body construction is available. Port sizes include ½, ¾, or 1 in. NPT.