Oliver Forum

Please do confirm (reply)

cburroughs — Mon, 02 Aug 2010 14:21:28 +0100

316Ti is similar to 316L except that 316Ti has better high temperature strength, and mechanical strength. Used for equipment exposed to aggressive corrosive conditions and high temperature applications.

Under most conditions it can be taken that the two grades are interchangeable, 316L (316S11/1.4404) being suitable for applications where 316Ti (320S31/1.4571) is specified. In aqueous corrosion media or environments at ambient temperatures, there is no practical advantage in specifying the 316Ti type in preference to the 316L. In some circumstances the 316L (1.4404 / 1.4432) grades may be better choices.

Hope this is of some assistance.

Please do confirm

raees@ueccontrol.com — Mon, 02 Aug 2010 13:39:40 +0100

I have quoted the SS 316L material for manifolds, while customer is asking for SS 316Ti, could you please clarify, what is basic difference between them?

MSS-SP-105 Conformance (reply)

PE_Shillito — Wed, 28 Jul 2010 14:00:14 +0100

Oliver Valves Ltd can manufacture instrument valves in accordance with the requirements of MSS-SP-105.

If you have any other questions, feel free to post them here on the forum, or by emailing sales@valves.co.uk.

Thanks,

Peter

MSS-SP-105 Conformance

tayfos — Tue, 27 Jul 2010 21:28:13 +0100

Please verify that Oliver valves are in conformance with MSS-SP-105

Thanks

Please do confirm (reply)

cburroughs — Tue, 20 Jul 2010 08:39:45 +0100

Yes 316L is available and I can confirm that all Oliver Valves 316 Stainless Steel is DUEL CERTIFIED to both 316/316L.

If you request 316L in your enquiry, we can make sure that this is the material quoted.

If you have any other questions please do not hesitate to post here or contact us at sales@valves.co.uk

Please do confirm

raees@ueccontrol.com — Tue, 20 Jul 2010 07:56:29 +0100

I have quoted Y34S model in a project. But client is asking to change the manifold material as S=316L Stainless steel. But i didn't found it in the manual. Please do confirm, is it available?

Minimum working tempearture of Y34S 3 valve manifold (reply)

P_Shillito — Mon, 12 Jul 2010 10:28:18 +0100

The Y34S needle valve manifold is suitable for a minimum working temperature of -50degC.

Minimum working tempearture of Y34S 3 valve manifold

raees@ueccontrol.com — Mon, 12 Jul 2010 08:55:53 +0100

We are sole representaive of Yokogawa in pakistan. We have offered oliver 3 valve model # Y34S, client have a question that what is the minimum temperature range. Can it work on -40 dec C? please do confirm.

316Ti stainless steel (reply)

PE_Shillito — Mon, 07 Jun 2010 13:13:53 +0100

No we don't. We have occasionally seen requirements for this material, more often than not from Germany, but it is not widely available in the UK. The Ti means that a small amount of titanium has been added to the material to improve its mechanical strength at high temperatures (greater than 600C) and resistance to intergranular corrosion after exposure to high temperatures.

316Ti stainless steel

Kafuka — Mon, 07 Jun 2010 12:24:19 +0100

Do you manufacture your needle valve manifolds from 316Ti stainless steel?

Pressure Equipment Directive (reply)

PE_Shillito — Mon, 10 May 2010 14:39:26 +0100

No, the valves produced by Oliver ValveTek are used on christmas trees and piping manifolds. These are excluded from the Pressure Equipment Directive (D.T.I. Guidance Notes on the UK Regulations, April 2005 Annex A).

Also, you're right in that we do get asked that fairly often. Thanks for asking though. Any more questions, feel free to post again on here or contact us by any of the means on here.

Pressure Equipment Directive

MelisaP — Mon, 10 May 2010 13:46:08 +0100

You may be asked this fairly often, but I'd still like to know:

Are the subsea valves produced by Oliver ValveTek in compliance with the Pressure Equipment Directive?

Subsea Water Depth (reply)

PE_Shillito — Tue, 04 May 2010 17:02:39 +0100

Thanks for your question Marcel.

Currently, our actuators are design and qualification tested to 10,000FT at 3,050M. This is limited by our current hyperbaric test chamber capacity. However there is no reason why we cannot develop a deeper water chamber!

I hope this answers your question. Any more questions, feel free to post again on here or contact us by any of the means on here.

Subsea Water Depth

MarcelPundit — Tue, 04 May 2010 15:03:57 +0100

Hello there. A little question to the guys at valvetek: What is the maximum water depth that your actuated subsea gate valves are qualified for?

Tahnks in advance,

Marcel Pundit

5 Valve Manifolds (reply)

PE_Shillito — Mon, 26 Apr 2010 14:00:58 +0100

5 valve manifolds are primarily used when dealing with hazardous chemicals and hydrocarbons. The additional valves are then used for safe venting and/or calibration.

Thanks for your question.

5 Valve Manifolds

JimmyJimmy — Mon, 26 Apr 2010 09:39:25 +0100

I understand the uses of 3 valve manifolds, but what application would warrant the use of a 5-valve manifold? I'm a little confused as to what the additional 2 valves would be used for.

What is a TDU? (reply)

PE_Shillito — Mon, 19 Apr 2010 13:13:02 +0100

TDU stands for Tool Deployment Unit. It bolts onto the ROV and holds tools for operating the valves.

There are 2 types of TDU commonly used subsea, a single or a double point docking system. Once the ROV has docked, it deploys a tool to operate the valves. These tools are governed by standards such as ISO 13628-8.

Thanks for your question.

Peter

A quick question about PR2 tests (reply)

PE_Shillito — Mon, 19 Apr 2010 12:24:17 +0100

Your thoughts are correct. When testing a bi-directional valve, during towards the end of the PR2 test, the valve is required to be tested in the reverse direction at low pressure.

Thanks for your question.

Peter

A quick question about PR2 tests

KaylaFindlay — Mon, 19 Apr 2010 12:15:42 +0100

I've always read about PR2 tests as being strictly a single-direction test. Is this true? I would have thought there should be some testing in the opposite direction.

What is a TDU?

TheSoares — Mon, 19 Apr 2010 12:09:17 +0100

In some of your specifications, it states "ROV operated valves with TDU". I'm not sure what a TDU actually is. Can you help?

Dennis