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|Stainless Steel Specialists Prochem are Australia’s leading supplier of quality Stainless Steel Pipeline Products, Stainless Steel Tube, Stainless Steel Flanges, Stainless Steel Valves Fittings and Stainless Steel Mechanical Instrumentation products. With 50 years of experience in Stainless Steel, their guiding principle is to add value to their customers' Stainless Steel business at all times.|
a question on or need to purchase quality Monoflanges and Instrument Manifolds?
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Jump to the Various Sections of this and other Instrument Fittings and Tubing Pages; Monoflanges and Instrument Manifolds | Frequently Asked Questions associated with Monoflanges and Instrument Manifolds | Instrument Monoflanges | Instrument Manifolds | Instrument Fitting Technical Information | Gauging Instrument Threads and Fittings | Codes and Standards | Compression Fittings| Excess Flow Valves | Instrument Manifolds, Monoflanges,Valves and Accessories | Tubing Selection
Monoflanges and Instrument Manifolds are used as an alternative to multivalve systems. They have been specifically designed to provide a compact installation for gauge or transmitter instruments. An application where a monoflange is used is in place of other equipment. For example, the instance where instead of having one valve and relying on it to close so that a transmitter can be isolated, two valves are used. A double block and bleed monoflange can be used in place of the two valves. It takes away that need for two valves and reduces it all into one. That is the monoflange has two valves on it, which are closed, and a vent that is opened to reduce the pressure between. It has reduced weight and minimum leak paths providing a higher integrity system. The reduced length of the installation also reduces the risk of damage through vibration.
Monoflange manifolds can be mounted directly onto vertical or horizontal flanged connections, allowing a gauge to be kept in an upright position. Suitable for both primary isolation (double block and bleed) and instrument (block and bleed) duties a Monoflange provides isolation, venting and instrument mounting in a single compact unit. The designs incorporate safety features that limit vibration and reduce the overall height of a gauge installation.
In order to ensure System Integrity one must not lose sight of the fact that Monoflanges and Instrument Manifolds are subject to Process Conditions eg., pressure and temperature, therefore it is important to purchase high quality units.
What does NPTF thread stand for?|
NPT thread stands for National Pipe Taper. It refers to the thread that tapers inward to create a better seal. It is recommended that care is taken in regards to the thread tolerances and only the best quality units are purchased to achieve this. It is imperative that any manufacturer has demonstrated quality assurance to a high standard. It is worthwhile ensuring the quality of threads by gauging at least a proportion of the threads to ensure compliance. Also it is recommended that thread tolerances and gauging should be specified to a tolerance better than the requirements of ASME B1.20.1. ICEweb's compression fittings page has a more detailed explanation of the gauging and tolerance requirements.
What is an OS&Y valve?
An OS&Y valve is an Outside Screw and Yoke valve. It is a part of the piping specification. It has a firesafe outside screw construction.
Why is the Molybdenum content of 316SS 2% minimum in an offshore environment?
The molybdenum content is at a minimum 2% to prevent chloride corrosion.
Why is 303 or 304SS not to be used in an offshore environment?
303 or 304SS is not to be used because their molybdenum content is nil and thus the material is subjected to chloride corrosion.
Is there a maintenance issue when Close Coupled Monoflanges are used? If the Monoflange is installed on a clean, non blocking process then it is not an issue in that access to the tapping point is required very rarely. This is especially so on Fieldbus and HART systems as the transmitter provides a huge amount of diagnostics on-line. The huge advantage of Close Coupling is that many instrument fittings are no longer required, thus eliminating potential leak failure points.
More Details on Monoflanges - From our sponsor Prochem Pipeline products
Close Coupled Monoflanges - This design incorporates all the integrity features of the convention models, however adds even more safety and cost saving features. The design eliminates the requirement for instrument tube, fittings and threaded connections. Mono Flange Direct, can be provided in a direct mount version or a interface mounting plate can be facilitated if required - From our sponsor Prochem Pipeline products
Installation, Operation and Maintenance of Monoflanges - Comprehensive Information from Anderson and Greenwood
Comprehensive Catalogue of Instrument Manifold Technical information and specifications - From Anderson and Greenwood - with 162 pages this is a large 6 Meg download.
Co-Planer Instrument Manifolds - Read from page 105 - Anderson Greenwood MC & MT series Integral Manifolds are designed specifically for Rosemount Coplanar style transmitters including Model 3051C, Model 3051P, Model 2024, and the Model 3095 Multivariable transmitters.
Manifold and Isolation Valve Mounting System for Direct Mounting DP Transmitters - The system does not require impulse lines, thereby considerably reducing installation and maintenance costs.
Co-Planer Instrument Manifolds - This technical engineering note from Rosemount gives a good description of the advantages and benefits of these manifolds.
From our sponsor PROCHEM
Information on Manifolds
Instrument Fittings Technical Data Page – This comprehensive page
covers just about all the engineering information that you need to know
including Design, Interchangability, Installation, Maintenance, Thread
Tolerances, Material Selection, Gauging and much more!
The following excellent links are compliments of Glastonbury Southern Gage.
Thread and End Connection Identification Guide - a 56 page document from Swagelok.
|Great technical information on other products from our sponsors PROCHEM PIPELINE PRODUCTS|
INSTRUMENTATION - Includes information on;
ATKOMATIC Solenoid Valves
BuTech Pressure Systems - System components are available in every imaginable alloy to handle pressures form vacuum to 150,000 PSI (10,000 bar) in tube and pipe sizes from 1/8" to 1" and temperatures from -423°F (-253°C) to over 1200°F (649°C). Suitable for extreme application of erosive or corrosive solids, liquids or gases.
Classic Filters - These filters are suitable for a variety of gas and liquid applications and are used in a wide range of industries around the world. The disposable microfibre filter elements are extremely efficient as well as being low cost. There are a number of benefits with this type of element and they offer high flow rates with very low pressure drops.
DOPAK® Sampling Systems - Due
to the growing complexity of the industrial processes in general and more
specific for processes in the (petro)chemical and pharmaceutical industries,
the need for tests and analyses increases continuously. The need for
representative samples plays a critical role in ensuring product
verification. Yet sampling directly from the process often includes the risk
of exposure to the operator, as well as contamination and pollution to the
environment. The Manual Sample Systems method reduces such risks with its
patented design and simple method of operation.
GYROLOK® Twin Ferrule Tube Fittings
HOKE® Instrumentation Valves
King Instrument Company - King Instrument Company offers a comprehensive line of variable area flow metres including acrylic, polysulfone, glass and metal tube metres. Optional alarms and 4-20 mA transmitter available on selected models. See more technical information on ICEweb's Flow page.
Prochem NPT Ball Valves - Full Bore 2-piece
threaded valves allowing straight-through flow. Virtually no head loss and a
superior performer with mildly abrasive as well as corrosive fluids. Ideal
for in-line control of process fluids.
Stainless Steel Braided Hoses – Teflon® Lined
Stainless Steel Tube
Thread Tape & Thread Paste
HOKE® Pipe Fittings
HYDRAULIC- Includes information on;
Tube-Mac Piping Technologies
Tube-Mac – PYPLOK System
Tube-Mac Non-welded Flange Connections
Seamless Steel Tubes
Stainless Steel Ball Valves – Hydraulic
Stainless Steel JIC Fittings
- JIC Fittings and Adaptors provide a straightforward,
positive, mechanical seal. They have been used for
many years for reliable sealing in commercial,
industrial and military applications. They are proven to supply dependable,
reusable connections under a wide range of operating conditions
including extremes of vibration, temperature and shock.
- JIC Fittings and Adaptors provide a straightforward, positive, mechanical seal. They have been used for many years for reliable sealing in commercial, industrial and military applications. They are proven to supply dependable, reusable connections under a wide range of operating conditions including extremes of vibration, temperature and shock.
VALVES AND ACTUATORS - Includes information on;
Prochem Actuated Valve Packages - Specialising in Poyam, ATC, BSM, Pacson and Habonim – Prochem can deliver actuated valves in any combination to suit your valve, actuator and control system specification.
AMPO Poyam Valves
BSM Valving Solutions
-Emergency Fast Track Valve Producers and Delivery Specialists, providing Ultra fast deliveries. Hard to obtain valves need specialist engineering. These valves are manufactured in a wide range of exotic materials to tight specifications..
ATC Actuators - The heart of the ATC actuator design is the revolutionary torque conversion mechanism combined with the integrated actuator spring. The simple operating principle offers a combination of high efficiency and small displacement, thereby creating greater design flexibility and improved reliability. This design flexibility, combined with the innovative integration of all actuator parts, results in the most compact actuator available in the market. In virtually all applications, irrespective of hydraulic or pneumatic supply, the ATC actuator diameter is smaller than the Face-to-Face dimension of the valve.
Anderson Greenwood Primary Isolation Valves
Habonim Industrial Valves and Actuators
Quality Management System
Fully Traceable and Complying Threads
Leaders in Thread Manufacture
World Class Manufacturing
Safety, Integrity and Reliability
Standard Products – BSP Fittings
Standard Products – NPT Fittings
PIPING PRODUCTS- Includes information on;
Branch Fittings - Details on a range of Buttweld, Socketweld, Threaded and Flanged reinforced branch fittings from 8 (1⁄4") NB upwards.
BSP Fittings - Prochem manufactures a complete
range (from 6 (1⁄8") - 100 (4") NB) of BSP tapered, BSP
parallel and BSP fastening and sealing threads for a variety of
applications, in class 150 and 3000. All our BSP threaded fittings are
checked with calibrated gauges during manufacture. Each batch is further
confirmed as being in compliance with the international standard and before
they are released into the market, all products undergo a final visual and
dimensional inspection by thread profiling.
Buttweld Fittings - Concentric and eccentric reducers, equal and reducing tees, 45° and 90° elbows, buttweld caps and stub ends, are all part of the comprehensive range of buttweld fittings carried by Prochem.
Duplex Stainless Steels - Duplex Stainless Steels are unlike the 300 (Austenitic) and 400 (Ferritic) series of stainless steels in that they have a structure consisting of approximately equal amounts of both ferrite and austenite. Therefore, they are often referred to as ferritic-austenitic stainless steels. With a chromium content ranging from 18 to 28 percent, they have improved passivity compared to standard grades. The nickel content ranges from 4.5 to 8 percent which is insufficient to promote a complete austenitic crystal structure, hence the mixed ferrite-austenite structure. Most grades contain molybdenum in the range of 2.5 to 4 percent plus small amounts of nitrogen – enhancing both strength and pitting resistance.
Flanges - A flange is designed to connect sections of pipe, or to join a pipe to an assembly such as a pressure vessel, valve or pump. Flanges are joined by bolting, and sealing is completed with the use of gaskets, and fixed to the piping system by welding or threading.
Heat Exchanger, Condensor & Boiling Tubes - Useful technical datasheet.
Hygienic and Tube - Prochem is well established as a supplier to the food industry. A comprehensive range of BSM, Tri-clover and buttweld fittings and valves are available throughout Australia, complete with welded and annealed polished tubes to suit.
NPT Fittings - NPT fittings are designed for high-pressure (class 3000 - class 6000) applications, and have a distinctive profile for maximum strength. All NPT products are checked with calibrated gauges during the manufacturing process and each batch is further confirmed as being in compliance with the international thread standard. Before they are released into the market, each item is subject to a final visual and dimensional inspection by thread profiling. Materials used comply with ASTM A403 or A182.
Pipe Nipples - Pipe nipples are available in ASTM A403 WP316/316L or 304/304L materials, from 6 (1⁄8″) NB upwards, threaded BSP or NPT, beveled or plain ended. Prochem has the ability to manufacture pipe nipples up to 6000 mm (6 m) in length in sizes 6 NB to 80 NB.
Saflok Self-Locking Quick Coupler Range - Prochem provides the safest quick couplers on the market from Saflok. Included the patented locking cam arm, the Saflok design has no peer among other quick couplings.
Socketweld Fittings - Prochem manufactures and supplies an extensive range of the highest quality Socketweld fittings, all thoroughly inspected to ensure complete dimensional compatibility with the requirements of the ASME B16.11 manufacturing standards.
Swage and Pipe Nipples - Prochem manufactures, stocks and supplies a range of plain, bevelled and threaded concentric and eccentric swage nipples, from 8 (1⁄4") NB through to 100 (4") NB, with other sizes available on request. All swage nipples are either manufactured from seamless pipe or bar material and have an available working pressure equivavlent to straight seamless pipe. These fittings are available in ASTM A403 WP316/316L or 304/304L materials with other materials available on request.
Stainless Steel Shim - Grade 316 shim, annealed and with a hardness rating of HV200, is available in coiled 305 mm (12″) wide rolls, in various thicknesses and sold by the linear metre.
Stainless Water Solutions Package - With increased height of buildings, pressures, and life time expectations, people are turning to Stainless Steel for their Water Solutions. These pipe and fittings bear the Water Mark logo ensuring compliance to the industry specifications. Coupled with roll grooving, Prochem has the complete package to offer your Water Solutions package. All designers, architects and builders should contact Prochem to see how we can save you money!!
Swing and Spring Check Valves
Pyplok - Now you can have the benefits of a welded joint, but without the hazards of hot work, using the Tube-Mac PYPLOK® DM and DP40 Series. It’s not only a permanent system, it goes on cold. This means all of the risks and requirements associated “with hot work” are avoided.
Assembly and Verification Process of PYPLOK fittings
PYPLOK fittings installed in a BOP (Blowout preventer) installed in the Gulf of Mexico at a depth of 2.400 m
PYPLOK fittings - Assembly Using a Hose Crimper - Pyplok fittings can be also crimped with a hose crimper, allowing companies the use of the fittings without having to buy a portable unit. The time and cost savings compared to welding, cutting ring or flaring are huge.
PYPLOK fittings for Water Mist Piping - PYPLOK fittings are the perfect choice for high pressure water mist piping systems. They are very fast to install, more economical than classical systems and totally reliable.
Welded Duplex Tube - Welded Duplex
Tube to: ASTM SA789/A789 UNS S31803/S32205.