O-rings are available is Viton, Buna ‘N’. These O-rings are usable for line stop applications with products: oil, crude oil, diesel, gasoline, GPL, natural gas, hydrocarbons and chemical industrial products.
Sandwich Valves use a variety of design features used to assist the linestop operations.
  • Sizes available: 2"-60"
  • Manual Valve: 4"-20"
  • Hydraulic Valve: 22"-60"
  • Working Pressure: ANSI 150 | 300 | 600 | 900
  • Available: Stainless Steel
For pipelines having short launcher / receiver barrels, VKVC designs, manufactures, tests, installs and commissions extension barrels for existing pig barrels. These barrels extend the length of the launcher / receiver. Adaptors are custom made to suit any make of quick opening end closure (QOEC) / quick opening closure (QOC) available over extension barrels. VKVC extension barrels enables intelligent pigging to be carried out on the existing barrels. A major advantage is that no hot work is required for installation of the extension barrels. VKVC pig extension barrels are custom designed by the engineering team at VKVC. The entire unit is precision machined in house at the VKVC machine shop and fabrication facility. Please contact us for more information.

Casings are used to protect pipelines. These pipelines usually run along highways, railway lines or regions with high activity. The pipeline is needed to be separated from the pipeline. VKVC casing insulators are tubular pipe supports; that electrically insulate the pipe and prevent damage. Electrical insulation is required to prevent shorting between the carrier pipe and the casing.

  • Easy to install
  • Efficient to use
  • Requires no special tools or grease
  • Corrosion protection
  • Insulating
  • Leakage prevention
  • Not required to fill sand in the casing (labour intensive)

Pipes are situated inside a casing near rivers, highways, railways or other such locations where safety is required. The opening between the carrier and the casing needs to be protected to prevent foreign material to enter. This opening is an attractive spot for corrosion and so is required to be kept dry.
Custom designs can be made depending on whether it is a new installation or for retrofitting. VKVC casing end seal are economic, easy to install and a clean solution.

Insulating Joints are used on pipelines to provide electrical isolation to prevent corrosion. They provide current spreading on cathodic protection systems. They provide electrical separation between pipeline section and the adjoining neighboring structures and pipelines. Wherever practical, the VKVC insulating joint is intended to be installed above the ground, or in an inspection pit in dry conditions to limit the possibility of electrical bridging across the joint. It is intended to be girth welded between two pipeline sections.


  • No loss of integrity due to thermal expansion or ground stress as is common with flange isolation gasket kits.
  • In-factory tested hydrostatically and electrically, to 1.5 times their working pressure. Non destructive testing is also available.
  • Maintenance-free, reliable cathodic isolation of equipment in required isolation applications such as compressor stations.
  • No labor intensive, complicated installation procedure required as is the case with isolation gasket kits,
  • No inspection pits, vaults or maintenance needed - weld into place and direct bury - reliable, worry-free cathodic isolation.
  • Non-conductive epoxy coatings help prevent shorts, both internally and externally.
  • Isolation stray currents impressed on the pipe from exterior forces such as electrical transmission systems, earth currents and currents flowing from point to point.
  • Excellent bending and torsional resistance.
  • Earthquake resistant - acts as a thrust block or joint.

VKVC flow tees are used in pipeline systems at branched connections and pig launcher and receiver systems. The tees can be barred or sphere. Barred tees help the pig to negotiate the branch. Tees are available customized as per customer request.

VKVC Jib Cranes are used for loading / unloading pigs near Pig Handling Systems. They are also used for removing filter elements from vertical filters. The cranes have a double bearing swivel to ensure that the jib crane can be rotated easily.
Technical Features

Available Range 0.5 to 10 ton
Swing Angle of Jib Crane 360 degrees
Column Material API 5L/A-36
Other Structure Material A-36 or Equivalent
Load Test 1.5 times rated load at VKVC Works
Operation Manual or Electic
Braking System Manual

In addition to pigs and launchers and receivers, VKVC also provides pig handling systems and jib cranes. Being equipped with pig handling systems is a must for pig stations and facilities. Loading and unloading the pigs are key points where accidents resulting in danger to manpower and equipment damage can occur. The pig handling system can be manual or hydraulic.
A crane alone is not sufficient to handle pigs as it is difficult to maneuver the pig in and out of the pipeline. Also a jib crane alone cannot ensure if the front cup is correctly positioned in the reducer at the pig launcher. VKVC pig handling systems are designed and engineered to ensure safe operation.

Pig Signals are devices which detect the passage of a pig and then inform the operators about this passage at crucial points of the pipeline. Pig signals are located at the pig launching, pig receiving and other critical points along the pipeline. Majority pipeline owners chose VKVC pig signals for their pigging needs due to the ease of operation and installation along with an uncomplicated design. Moreover the experienced pig locator professionals from VKVC make the pigging operation fast and efficient.

Features of intrusive pig signals
  • Can be used with a variety of pigs - Foam pigs, Metal bodied pigs, Polyurethane pigs, Spheres, Mandrel pigs
  • Provided with mechanical and visual indicator, electrical indicator or a combination of both for maximum flexibility
  • Can be fitted to all pipeline sizes over 1"
  • Can be fitted on majority existing signaller bosses for best flexibility
  • Does not use dynamic seals
  • Low maintenance costs and emission controls
  • Fitted on hot tapping systems
  • Bi directional and omni directional trigger mechanisms
Body M.O.C. Carbon Steel / Stainless Steel Bodies with Polyurethane Discs
Size 2” NB to 48” NB
Disc Material Polyurethane / Viton / Nitrile
Function Batching, Cleaning, Gauging, Magnetic
Attachments Cups, Gauge Plates, Brushes, Magnets
  VKVC is a trusted manufacturer and supplier of Quick Opening Closures used in the Oil, Gas and Energy Sectors. VKVC offers Quick Opening Closures of the following variety:
  • Y Rotary Self Lock Closure
  • Y Ring / Band Lock Closure
  • Y Clamp Ring Type Closure
With over 10,000 units installed and safely in use worldwide with satisfied clients, VKVC is a trusted choice. VKVC is certified by the American Society of Mechanical Engineers to use the ‘U’ and ‘UM’ stamp with its Quick Opening Closures, thus ensuring an industry wide accepted quality standard.
Available Sizes 2" to 60"
Class Rating ASME 150# to 2500#
Design Codes ASME Section Viii Div. 1, UG-35(2) PD 5500 ASME “U” Stamp, FEA can be provided Sizes greater than 60" & pressure rating above 2500# can be provided
Closure Orientation Horizontal
Vessel / Trap Design Codes ASME B31.3 ASME B31.4 ASME B31.8 ASME Sec VIII Div. 1
Types of Connection Butt Welded , Flange Ended
Material of Construction ASTM A/SA 350 Lf2 Cl. 1 or 2 ASTM A/SA 105 ASTM A/SA 516 Grade 70 ASTM A 694 F Grade 42/46/52/56/60/65/70 Stainless Steel Grade 304L or 316 Duplex, Super Duplex
Elastomeric Sealing Buna-N, Viton & other options available on request
Standard Closure Finish Red Oxide Primer (Standard) & other options available on request
Additional Available Features
  • Mechanical Sequential Key Interlock
  • Limit Switch
  • Inconel / Stainless Steel Weld Overlay
  • Hydraulic Operating System
  • Worm Gear Operation
Typical applications include but are not limited to
  • Pig Launcher / Receivers
  • Subsea Systems
  • Filters
  • Basket Strainers
  • Sand Blasting Units
  • City Infrastructure Access Points
  • Tanks
  • Reactors
  • Metering Skids
  • Fuel Conditioning Skids
  • Separators
  • Hydrocyclones
  • Decompression Chambers
  • Thermal Processing Equipment
Body M.O.C. Carbon Steel / Stainless Steel Bodies with Polyurethane Discs
Size 2” NB to 48” NB
Disc Material Polyurethane / Viton / Nitrile
Function Batching, Cleaning, Gauging, Magnetic
Attachments Cups, Gauge Plates, Brushes, Magnets
Body M.O.C. Carbon Steel / Stainless Steel Bodies with Polyurethane Discs
Size 2” NB to 48” NB
Disc Material Polyurethane / Viton / Nitrile
Function Batching, Cleaning, Gauging, Magnetic
Attachments Cups, Gauge Plates, Brushes, Magnets