Duo-Chek Check Valves Compared to Conventional Swing Check Valves

Duo-Chek® high performance non-slam check valves are available in the sizes, pressure classes and configurations required to meet the most demanding of applications. 

The Duo-Chek® wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Its design meets API 594, is approximately one fourth the face to face dimension and 15% to 20% the weight, on most popular sizes, making them less expensive than a swing check valve. It is much easier to install between standard gaskets and line flanges. The savings compound during installation due to ease in handling and only one set of flange studs is required. Therefore, it is more cost effective to install, and also to maintain.

For more information about Duo-Chek check valves, contact Mountain States Engineering and Controls. Call 303-232-4100 or visit  https://mnteng.com.

Happy Labor Day from Mountain States Engineering and Controls!

 

Happy Labor Day

A sincere thanks from MSEC to all the hard working people who make the US economy run each and every day. 

Mascot VFlo: V-Notch Segmented Ball Control Valve

Mascot VFlo

A Segmented Ball Valve from Mascot Valve

The VFlo – Segmented Ball Valve is designed to provide effective control for demanding applications. It is a rugged design segmented ball valve which overcomes the problems of harsh, particle entrained processes, and fibrous/unclean services. The VFlo also provides accurate, reliable control in a broad rang

Metal Seal: Using the pressure drop across the valve, flex-lock sealing energises the seal to bubble tight shutoff in either flow direction. ANSI class IV is achieved with a metal seal.

Soft & Dual Seal: Using the pressure drop across the valve for soft sealing as well, the VFlo energises the seal to bubble tight shutoff in either flow direction. ANSI class VI is achieved with a soft seal and ANSI class IV with a dual seal.

The Soft seal ring is standard for the VFlo and utilizes a 316 SS or Inconel Ring as a backup in conjunction with a Filled PTFE / PEEK seat. Such design provides for a quick and easy replacement in case of failure. The backup ring also provides shear action hence scraping any developments on the ball.

DOWNLOAD THE VFLO BROCHURE HERE

For more information about Mascot Valves, contact Mountain States Engineering and Controls. Call them at 303-232-4100 or visit their website at https://mnteng.com.

Considerations in Selecting Industrial Heat Exchangers

Standard-Xchange


The information below, courtesy of Standard-Xchange, outlines various design types of heat exchangers along with their advantages, limitations, and selection tips. For more information on applying heat exchangers to industrial process, contact Mountain States Engineering and Controls.

Non-Removable Bundle, Fixed Tubesheet

Advantages
  • Less costly than removable bundle heat exchangers
  • Provides maximum heat transfer surface per given shell and tube size
  • Provides multi-tube pass arrangements
  • Interchangeable with competitive models
Limitations
  • Shell side can be cleaned only by chemical means
  • No provisions to correct for differential thermal expansion between the shell and tubes. (Exception: expansion joint, available only on C200 and C210 exchangers)
Selection Tips
  • For lube and oil and hydraulic oil coolers, put the oil through the shell side
  • Corrosive or high fouling fluids should be put through the tube side
  • In general, put the coldest fluid through the tube side

Removable Bundle, Packed Floating Tubesheet

Advantages
  • Floating end allows for differential thermal expansion between the shell and tubes
  • Shell side can be steam or mechanically cleaned
  • Bundle can be easily repaired or replaced
  • Less costly than full interval floating head-type construction
  • Maximum surface per given shell and tube size for removable bundle designs
Limitations
  • Shell side fluids limited to non-volatile and/or non-toxic fluids, i.e., lube oils, hydraulic oils
  • Tube side arrangements limited to one or two passes Tubes expand as a group, not individually (as in U-tube unit); therefore, sudden shocking should be avoided
  • Packing limits design pressure and temperature
Selection Tips
  • For lube oil and hydraulic oil coolers, put the oil through the shell side
  • For air intercoolers and aftercoolers on compressors, put air through the tube side
  • Coolers with water through the tube side: clean or jacket water, use 3/8” tubes; raw water, use 5/8” or 3/4” tubes
  • Put hot shell side fluid through at stationary end (to keep temperature of packing as low as possible)

Removable Bundle, Pull-Through Bolted Internal Floating Head Cover

Advantages
  • Allows for differential thermal expansion between the shell and tubes
  • Bundle can be removed from shell for cleaning
  • or repairing, without removing the floating head cover
  • Provides multi-tube pass arrangements
  • Provides large bundle entrance area
  • Excellent for handling flammable and/or toxic fluids
Limitations
  • For given set of conditions, it is the most costly of all the basic types of heat exchanger designs
  • Less surface per given shell and tube size than C500
  • Selection Tips
  • If possible, put the fluid with the lowest heat transfer coefficient through the shell side
  • If possible, put the fluid with the highest working pressure through the tube side
  • If possible, put the high fouling fluid through the tube side

Removable Bundle, Internal Clamp Ring-Type Floating Head Cover

Advantages
  • Allows for differential thermal expansion between the shell and tubes
  • Excellent for handling flammable and/or toxic fluids
  • Provides multi-tube pass arrangements
Limitations
  • Shell cover, clamp-ring and gloating head cover must be removed prior to removing the bundle.
  • More costly than fixed tube sheet or U-tube heat exchanger designs
Selection Tips
  • If possible, put the fluid with the lowest heat transfer coefficient through the shell side
  • If possible, put the fluid with the highest working pressure through the tube side
  • If possible, put the high fouling fluid through the tube side

Removable Bundle, U-Tube

Advantages
  • Less costly than floating head or packing floating tubesheet designs
  • Provides multi-tube pass arrangements
  • Allows for differential thermal expansion between the shell and tubes, as well as between individual tubes
  • High surface per given shell and tube size
  • Capable of withstanding thermal shock
Limitations
  • Tube side can be cleaned only by chemical means
  • Individual tube replacement is difficult
  • Cannot be made single pass on tube side; therefore, true counter-current flow is not possible
  • Tube wall at U-bend is thinner than at straight portion of tube
  • Draining tube side is difficult in vertical (head-up) position
Selection Tips
  • For oil heaters, wherever possible put steam through the tube side to obtain the most economical size

Removable Partition Plates With Compression Endplates and Frame

Advantages
  • Ease of disassembly for cleaning or replacement parts
Limitations
  • Not Suitable for pressures over 300 psig
  • Not Suitable for change of state or gaseous applications
Selection Tips
  • For applications involving temperature crossing
  • Economical when exotic metals are required

Brazed Plate

Advantages
  • Very compact and rugged
  • Lightweight
  • Many design options, including multiple passes, different plate styles, nozzle sizes and orientation
  • High heat transfer performance
No gaskets
  • Limitations
  • Can only be cleaned chemically
Selection Tips
  • For applications involving temperature crossing or close temperature approach
  • Ideal for refrigerant-to-liquid or refrigerant-to-gas applications
  • Very economical when compared to all-stainless tubular construction

Heavy Duty Removable Core Type

Advantages
  • Tubes free to expand individually
  • Heating elements totally removable for maintenance or replacement without disconnecting outer casing from ductwork
  • Embedded or extruded fins available for higher design temperatures (750° F max.)
Limitations
  • Individual tubes cannot be cleaned or plugged

303-232-4100

Understanding Pigging and Pig Valves in Industrial Pipelines


Pigging is a method of introducing a mechanical device, commonly referred to as pigs or scrapers, inside a pipeline to perform various internal maintenance operations.The term PIG is said to be an acronym for "Pipeline Intervention Gadget". The process has been used for many years to scrub large diameter pipelines in the oil and gas industry. Today, the use of smaller diameter pigging systems is growing in many continuous and batch processing plants, as plant operators are looking for improved productivity and ways to reduce costs. 

Pig valves were successfully implemented into the oil and gas industry over five decades ago.  They are used extensively on oil and gas pipelines throughout Western Canada and the United States. They provide an efficient way to launch and retrieve pigs in the oil and gas industry, water treatment facilities, or anywhere critical pipelines need to be maintained.

Pigging is used to mechanically sweep and/or visually inspect inside of the pipeline. The pig or scraper is moved through the line by the differential pressure caused by the process fluid moving past at a higher velocity. The pig is inserted into what is known as a "pig launcher" (or launching station) which is a part of the pipeline with an oversized diameter to accomodate the installation of the pig. The launching station is then closed and the pressure driven flow in the pipeline is used to move the pig down the pipe until it reaches the receiving trap (the pig catcher or receiving station) where it can be removed. Pigs are used daily in the operation of pipelines for a variety of reasons, the most common are: pipe cleaning for improved line efficiency; locating flow obstructions; pipeline inspection; separating different products flowing through the pipeline; corrosion control; air purge; water removal; and flow volume validation.

For more information about pigging valves, contact Mountain States Engineering and Controls. Call them at 303-232-4100 or visit https://mnteng.com/pig-valve.

CavFlo Cavitation Control Valve Trim by MASCOT


Whenever the pressure of flowing liquid through a restricted area of a control valve drops below the vapor pressure of the liquid, and recovers to a pressure above the vapor pressure, cavitation damage to the control valve and connecting piping may occur. 

In the first stage of cavitation, vapor bubbles form downstream of the restricted area at the vena contracta (point of narrowest fluid constraint). The enlarging passage at downstream of the vena contracta reduces the velocity and thereby associated pressure recovery causes the vapor bubbles collapse or implode suddenly.

This implosion of the bubbles on metal surfaces causes stresses, eventually resulting in tearing away particles of the metal from the surface towards inward. Cavitation damages the plug and seat of a control valve as throttling occurs at the restriction, in the clearance between the plug and seat ring. If the vapor bubbles implode near them, the valve body and piping can also be damaged.

MASCOT's CavFlo Trim utilizes many small holes for diametrical flow through the walls of the seat retainer. As the valve plug lifts, increasing pairs of holes are opened. Each hole discharges a jet of cavitating liquid at the center of the retainer, which impinges with a jet of liquid admitted through the opposing hole. The impinging fluid jets form an area of pressure recovery and a fluid cushion. This phenomenon collapses the vapor bubbles in the fluid stream, away from metal parts preventing damages.

For more information about MASCOT Control Valves, contact Mountain States Engineering and Controls. Call them at (303) 232-4100 or visit their website at https://mnteng.com.

New Product Line! Mascot Valves. High Quality. Competitive Prices. Large US Inventory

Mascot ValvesMountain States Engineering and Controls is pleased to announce the addition of MASCOT Valves to our product line. MASCOT maintains a large USA based inventory in Channelview, TX for fast product delivery. MASCOT's superior quality is driven by complete in-house manufacturing, assembly, and testing, along with full material traceability and extensive quality procedures, to assure that MASCOT products provide you with superior performance and a competitive price.

DOWNLOAD THE MASCOT VALVE PRODUCT CATALOG HERE

For more information about MASCOT Valves, contact Mountain States Engineering and Controls. Call us at 303-232-4100 or visit our website at https://mnteng.com.

Don't Let Contaminated Steam Affect Your Food and Beverage Production Quality


You wouldn’t use unsafe ingredients in your products. But are you contaminating them with unsafe steam. Steam is the most efficient method of heating in food and drink processes. But when steam is in direct contact with food contaminants like particles of rust, dirt and chemicals could end up in your products and your consumers. Product recalls, tarnished brand reputation, and plunging consumer loyalty will all impact your bottom line. So why take the risk?

To protect your consumers and guarantee product quality, you must treat steam as you would any other ingredient and ensure it's safe to consume. It doesn't have to be hard. Spirax Sarco, and Mountain States Engineering and Controls can help you find the right standard of steam for your process and put measures in place to keep standards high. We can help you adopt best practices in steam system design and improve steam quality, install filtration around your steam system to mitigate the risk, and install a dedicated clean steam supply to eliminate the contamination risk.

To learn more about Spirax Sarco products, contact Mountain States Engineering and Controls by calling 303-232-4100 or by visiting https://mnteng.com.

COVID-19 Statement


We at MSEC, Inc. continue to navigate the rapidly changing COVID-19 pandemic. We are closely monitoring the situation and following the guidance available through the Centers for Disease Control (CDC), the World Health Organization (WHO) and state and regional public health authorities. We are committed to the safety of our customers, business partners, and employees.

As a distributor that directly supports the continuing operation of critical facilities in the healthcare industry, food & agriculture industries, power industry, and other infrastructure industries, our facilities and operations will remain open during the Wuhan Coronavirus pandemic until further notice.

Our Golden, CO  head office and warehouse remains open and our supply chain remains intact. We are maintaining a limited staff in our office  to support critical functions including shipping/receiving, accounting, and IT.  We have also implemented a rotating remote work schedule to minimize employees at the office at any specific time.

Additionally, we have implemented the following requirements:
  • Restricting visitor access to our facility.
  • Increased frequency of sanitizing facilities and workspaces.
  • Requiring regular hand washing and sanitizing.
  • Using technology where possible to replace in-person meetings.
We will update this statement as the situation changes.

We thank you for your continued business and support. Please stay safe and be well.

Cross Reference Guide for Steam Traps, Regulators, and Pressure Pumps from Watson McDaniel

McDaniel Company is a U.S. manufacturer of steam traps, pressure pumps, pressure and temperature regulators, relief valves, liquid drainers, ejectors, engineered systems, and a variety of specialty steam products.

They have assembled a handy cross reference chart for major manufacturers of steam traps, temperature regulators, pressure pumps, and other steam related process equipment.


DOWNLOAD THE CROSS REFERENCE GUIDE FROM THIS MSEC WEB PAGE


For more information on steam traps, temperature regulators, condensate recovery, and process heat, contact Mountain States Engineering and Controls. Call them at 303-232-4100 or visit them at https://mnteng.com.