Instrumentation – Proflow

Instrumentation pressure gauges and accessories

admin — Mon, 10 Jan 2022 11:56:57 +0000

High quality pressure gauges designed for critical fluid and gas applications in the chemical, petrochemical, pharmaceutical and power industry, nuclear power plants, process engineering, laboratories.

all wetted parts in AISI 316L stainless steel (optional Alloy 400 – monel);
case size 40, 50, 63, 115, 160 mm;
measuring range from vacuum up to 1000 bar;
accuracy 0,5%, 1%, 1,6% i 2,5%;
made in compliance with EN 837 and ASME B40.1;
wide variety of connection types and scales;
durable and secure;
factory-calibrated and tested for leak tightness;
ATEX approved gauges also available.

IMP pressure gauge (manometer) range comprises: pressure gauges – measure overpressure, vacuum gauges – measure vacuum and manovacuometers – measure both vacuum and overpressure.

Sample cylinders and valves with a rupture disc – technical information

Cylinders are perfectly suited for safe collection, storage and transport of both fluid and gas samples from a system to a laboratory for analysis. Widely used for sampling hydrocarbons in refineries, gas sampling in chromatography, fossil fuel condensate sampling, condensate sampling in nuclear plants, as pressure rise accumulator and muffler in chemical reactors. Made of seamless, cold-drawn stainless steel pipes (ASTM A269), ends formed using spinning process both with NPT female threads. Sandblast finish, inner and outer, for smooth and clean surface. Manufactured and tested in compliance with DOT 49 CFR 178.42 3E. All cylinders are hydrostatically tested to 3000 psi (206 bar), one cylinder per lot (500 pcs.) is tested to destruction. Used with H-285 valves with a rupture disc unit.

Sample cylinders and valves with a rupture disc unit can be used by trained personnel only, familiar with the operating manual!

Proflow Instrumentation quick release couplings

admin — Mon, 10 Jan 2022 11:55:07 +0000

Superior quality quick release couplings, single shut-off or double shut-off. Interchangeable with other Instrumentation standard quick release couplings. Easy, quick and safe connection by simply pushing a plug into a socket. Used in numerous applications across the industry, including: aviation, gas industry, medical and pharmaceutical industry, laboratories. Three sizes available: QC4, QC6 and QC8 (1/4”, 3/8” and 1/2”). Come with NPT, BSPT and BSP male and female threads and with LETLOK® connectors. Made of AISI 316 stainless steel, standard sealing – Viton O-rings. All quick release couplings are factory-tested at 68 bar (51,7 bar for QC8) to check for tightness – maximum allowable internal leakage 0,1 Ncm³ /min. Recommendations: maximum pressure for uncoupled QC-LOK®, when connecting or disconnection (21ºC) is 17,2 bar; connection or disconnection always at room temperature (21ºC); install a filter ahead of the quick release coupling; avoid side strains ( e.g. hanging hoses); lubricate O-rings on the plug periodically.

Valve manifolds

admin — Mon, 10 Jan 2022 11:52:43 +0000

Valve manifolds integrate several valves together in a common, single body. They are mounted in control and measuring equipment systems directly before pressure gauges or pressure transmitters to protect these instruments against damage. The inlets of the valve manifold are connected to process lines, whereas the outlets connect measuring instruments. Manipulating the valves of the manifold allows making safe static pressure measurements, shutting a measuring instrument off from the process line, venting or releasing the agent from the instrument line, instrument calibration. The valve manifolds are commonly used with differential pressure transmitters. By measuring pressure difference in two spots of the processing system (measuring differential pressure), the flow rate can be determined, fluid level can be measured in closed tanks, pumps and filters can be easily inspected. The valve manifolds are widely used in industrial systems, especially those in the chemical industry and petrochemical industry (Oil & Gas). Tubes International offers 1, 2, 3, 4 and 5 – valve manifolds by HAM-LET ASTAVA.

An example of the simplest configuration is 2-valve manifold with an inlet, main outlet and vent outlet. A pressure gauge is connected to the main outlet, the vent outlet remains free. To check pressure in the system, open the shut-off valve, then the pressure is supplied to the pressure gauge. To release the pressure from the pressure gauge, not causing damage, first close the shut-off valve and then open the vent valve, which releases the pressure from the pressure gauge. With the valve manifold fitted in the process line, you can measure the pressure in the system at any moment, in a safe and easy way.

Other instrumentation valves and filters

admin — Mon, 10 Jan 2022 11:50:35 +0000

Apart from ball valves and needle valves, instrumentation systems also include:

check valves, i.e. unidirectional valves that allow the flow in one direction only;
relief valves, normally closed, open and release the agent after the pre-set pressure is reached;
other valves e.g. excess flow shut-off valves – close the flow when the assembly bursts.
filters – protect instruments from particles and contaminants.

Instrumentation needle valves

admin — Mon, 10 Jan 2022 11:48:33 +0000

Needle valves (depending on the type of valve and stem applied) are used to control flow rates, to open or close the flow completely and for metering media. As opposed to ball valves, the needle valve is opened and closed by turning a knob many times. The process is gradual, no sudden rise or drop of pressure occurs, which is critical especially for high pressure gas applications and high flow velocity. The needle valves, with a special regulating stem in particular, can be used to control the flow rate in a system.

When an application requires highly accurate dosing of a medium, then metering needle valves are used. In this type of valves the medium flows through a calibrated hole in the seat of the valve. A tapered needle is in that seat. Movement of the needle closes or opens the flow allowing precise dosing of the medium by simple adjustment with the knob.

The construction of precision needle valves is tested for performance at burst pressure and at test pressure; stem is blow-out proof; all parts are manufactured from certified materials and precisely finished. Every ball valve is tested with nitrogen at 1000 psi (69 bar) for leaks in the body and seals to ensure leak-tight shut-off and longest service life. The valves are made of corrosion-resistant materials, whereas the right sealing material can be chosen from many options so as to match any medium, pressure or temperature. Come with several different connections: threaded, weld-in and double ferrule connectors (LET-LOK®).

Due to their outstanding reliability, the instrumentation needle valves are widely used in control and measuring equipment for the chemical, petrochemical, pharmaceutical and power industries, nuclear power plants and process engineering.

Instrumentation ball valves

admin — Mon, 10 Jan 2022 11:46:45 +0000

Instrumentation ball valves (instrumentation) have the following features:

construction tested for performance at burst pressure and at test pressure, stem is blow-out proof;
all parts are manufactured from certified materials and precisely finished;
meet the requirements of ISO 15848-1: 2006 (E);
every valve is tested with nitrogen at 80 psi (5,5 bar) and 1000 psi (70 bar) for body leakage, seals and ball seat leakage;
max. allowable leakage through the ball seat is 0,1 Ncm³/min;
leak-tight in a closed position, longest service life and low operating torque;
made of corrosion-resistant materials;
come with an array of end connections, including double ferrule connectors (LET-LOK®);
many options of sealing materials allow choosing the one compatible with the medium, pressure and temperature.

Due to their indisputable reliability, they are used with control and measuring instruments.

Other instrumentation connectors and couplings

admin — Mon, 10 Jan 2022 11:37:17 +0000

Other instrumentation connectors and couplings – general information

Instrumentation flange adapters

Flange adapters with flanges according to the following standards: EN 1092-1 (DN15 ÷ DN50) PN40 ÷ PN160, ANSI (ASME B 16.5, 1/2” ÷ 2”), ASA 150 ÷ ASA 2500, JIS B 2200 (DN15 ÷ DN50), 10K ÷ 63K with the required type of flange face (sealing surface). Connections at the other end: LET-LOK® pipe connection (1/16” ÷ 2”, 2 mm ÷ 50 mm) or NPT thread (male or female thread, 1/16” ÷2”). Adapters are manufactured as uniform component (one-piece forged body, out of a single piece of metal) – not welded. Made of AISI 316 stainless steel (optional Alloy 400, Alloy C-276), with a superior surface finish. Flange adapters are developed for and used in the most demanding systems of the chemical and petrochemical industry, oil & gas, power industry.

JIC (37º) connectors – for flared pipes

High-quality connectors for 37º flared cone precision pipes (imperial or metric). Compliant with SAE J 514. Unions and connectors, adapters, reducers, elbows, tees, crosses, dust caps and plugs. Made of AISI 316 stainless steel with a superior surface finish. For pipe sizes from 1/8” to 2” and from 6 mm to 38 mm. Working pressure up to 345 bar (depends on size).
Used in the most demanding systems of the chemical and petrochemical industry, oil & gas, power industry. Available on request. Also see chapter „JIC connectors” in „High pressure hydraulics (high pressure)” section of Tubes International Catalogue.

HTC® special couplings for ultra-pure gases and vacuum

HTC® (Hi-Tech Components) special couplings for high purity and ultra pure gases and vacuum, comply with the requirements of the semiconductor industry, pharmaceutical industry and biotechnology. The couplings designed for connection to a pipeline via orbital welding and symmetrical thread face seal couplings with a metal gasket placed between the shoulders of the mating parts. There are test ports in the nuts for easy leak testing. The couplings are made of AISI 316L stainless steel (optional 316L Var or Vim/Var). The gaskets are in AISI 316 steel, silver-plated AISI 316 or nickel. The threads in the nuts are silver-plated. Two surface finish versions: version H non-electropolished (Ramax = 0,508 µm) and version E electropolished (Ramax = 0,254 µm). Sizes from 1/8” to 1”. Compliant with SEMI E49 standard for the electronic industry. Working pressure up to 590 bar (depends on size), working temperature up to 538ºC.

Instrumentation threaded connectors

admin — Mon, 10 Jan 2022 11:33:10 +0000

Threaded connectors (adapters) designed for connecting instrumentation elements, with connections sealed on NPT pipe taper thread. NPT thread to BSP, BSPT and UN thread adapters. Straight connectors, reducers, muffs, nipples, elbows, tees, crosses, pipe unions, dust caps, plugs and hose fittings.

Made of AISI 316 stainless steel (optional brass) with a superior surface finish. NPT threads compliant with ASME / ANSI B1.20.1. Sizes from 1/16” to 2”. Instrumentation threaded connectors are developed for and used in a vast array of demanding applications in the chemical and petrochemical industry systems, oil & gas, power industry.