Reducing plant emissions for safety and environmental reasons is important to most valve users.
Adanac carry out the modification of Ball, Gate and Globe Valves to provide extra depth stem gland seal incorporating double gland, lantern ring and vent tapping. This provides increased integrity sealing reducing leakage to atmosphere, with the facility for early leak detection on processes where reducing emissions is important.
In addition, the ATaCS facility offers the ability to carry out prototype and production testing of the modified valve, providing the user with the added confidence of a performance test certificate.
Adanac have the ability to take a standard, off the shelf valve and make changes to the trim components to suit the user’s specific requirements.
Typical trim changes include replacement of stem, disc and seat components in an alternative material. Also overlay of seating components to provide improved wear and process resistance.
Materials include Duplex and Super Duplex Stainless Steels, Chrome and Nickel based alloys, Copper based alloys and Hard Facing materials such as Stellite 6 and 22.
Ball Valve trim changes include replacement of Ball and Stem components in alternative materials.
Adanac also offer Surface Coating of valve components such as Electroless Nickel Plating, Wear Resistant Materials and Passivating.
Adanac modify metal seated gate, globe and check valves to soft seated by the fitting of inserts into the wedge, disc or seat. Insert materials such PTFE, PCTFE, PEEK, EPDM and Viton are held in stock allowing the modification of standard valves on short lead-times.
Adanac hold stocks of semi-finished rod and tube in a number of materials including Virgin and Filled PTFEs, PEEK, PCTFE, Devlon, Nylon, UHMWPE for the manufacture of ball valve seats in non-standard materials. Adanac has experience in redesigning seats to suit particular applications.
Adanac hold stocks of gasket materials in finished and semi-finished form allowing us to respond quickly to requests to change the gasket on valves from the standard material. Cut sheet and spiral wound bonnet gaskets can be produced and fitted in a matter of days.
We also hold stocks of the common manufacturer’s stem packing materials such as James Walker, Latty, Garlock and Beldham. Our stem packing fitters are approved by Garlock GB.
Adanac are able to carry out modification of valve end connection to suit the user’s particular requirements.
Modification of the stem and disc converts a standard globe valve into a Screw-down Non-return valve sometimes also known as a Stop and Check Valve.
The globe action allows flow to be shut-off when in the fully closed position and also to regulate flow through the valve while open.
Adanac can provide the solution to unauthorized or accidental valve operation.
From simple chain and padlock type locking devices to bespoke locking devices designed and fabricated in our workshop facility.
We also offer a fitting service, on-site or at our facility.
Locking devices can be supplied with ‘like-keyed’ or standard multiple keyed locks to meet the user’s particular site requirements.
Simple two position devices to lock the open and close positions. Adanac also design devices allowing the valve to be locked in multiple intermediate positions.
Adanac’s tagging services can provide suitable valve/key identification.
Adanac design, fabricate and fit valve interlock solutions. Particularly useful where the operating sequence of process equipment is critical, Adanac can provide key logic with single or multiple keys on retain/release functions to control the operation of valves and other process equipment.
Simple two position indication to show if the valve is open or closed. Multiple graduated indicators, particularly useful on multi-turn valves in providing a reference of a valve’s position in relation to process flow conditions.