(+27) 11 422 4326/7 sales@dualvalves.com
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With over 40 years experience in technical and valve engineering in the slurry industry the DFV still stands as our flagship valve.


Slurry Valve Manufacturing


Valves engineered with longevity in mind


Manufactured in-house to ensure quality and testing.


Repairs done to various types & brands of valves


ISO 9001


No Project IS Too Big Or Too Small

The Dual Valves Team has more than 40 years experience in technical and valve engineering in the slurry industry. We ensure our products are designed to suit customer specifications and requirements. Our team has designed valves from the ground up, based on application, pressure rating, Face to Face and size.

Based in Apex Industrial, Benoni, South Africa, we pride ourselves in being a local manufacturer of our entire range of products.

We manufacture a comprehensive range of Gate Valves, Pinch Valves, Ball Check Valves and many more.

With a strong team of determined and hard working engineers lead by Stephen Van Rensburg, we have successfully tackled some of the largest valve projects and have shipped our extensive range across the world.


Completed Projects




Our extensive range of products cover a multitude of industries. We are able to manufacture any of the Dual valves to match the required specifications across the globe.








With over 47 Products in our range, we have continued to engineer these products to increase longevity and ease of maintenance in situ, however this has not stopped us from finding new and innovative ways to increase the quality of our products.

Dual has been in the valve industry for over 40 years. In this time we have made significant progress in the manufacturing of valves, as well as finding the better solutions with materials that increase the wear life of our valves. All products are manufactured to ISO 9001:2015 and tested to ISO 5028 standards.

The company was started by Gerry Van Rensburg and Stephen Van Rensburg, his son.  Stephen is driven to always find the best solution to a mining or pipeline project.

Dual started with the DFV Valve which today still stands as our flagship model, adding to that, Dual has engineered and perfected many more products from Gate valves to Diaphragm Valves.

We manufacture in-house, which gives us the great flexibility to customise our valves to suit client requirements.


1600NB DRDSV Valves

These 1600NB valves are electrically actuated using an electric actuator. Rated to 10 bar and fully rubber lined interior they are one of the biggest projects the Dual Valves team has taken on and completed.

750NB DFV Valves

These valves have a custom designed and fabricated steel ball insert to ensure the pressure of the valve over the 750NB interior is handled with ease. Shipped to the USA and with spares to ensure easy maintenance and longevity.

600NB DSPV Valves

The 600NB single pinch valves are the largest of their kind for Dual and around the world. The single pinch mechanism allows for better control and less moving parts, thus making this valve easy to operate and maintain in situ.


6 + 5 =

+27 11 422 4326/7
+27 11 421 7842
Cnr Rotterdam & Antwerp Street, Apex, Benoni, Gauteng, South Africa
P.O. Box 12520, Benoryn, 1504

Dual, (the “Dual”), considers information to be critical to its business. Our clients and their employees, our business partners and our colleagues around the world entrust us with their Personal Information (as defined in POPI) as well as confidential business information.

POPI requires us to inform you as to the manner in which your personal information is used, disclosed and destroyed. We are committed to protecting your privacy and ensuring that your personal information is used appropriately, transparently, securely and in accordance with applicable laws.

Dual’s Code of Conduct, and the appropriate handling of information Policies, all provide guidance for our colleagues to ensure proper safeguards are put in place and that we handle your information responsibly. All colleagues are required to certify that they have read, understand, and will comply with the Company’s Code of Conduct.

We confirm that Dual has established internal controls to comply with business and regulatory requirements, including the protection of confidential and Personal Information, shared with us.

We address some of the Frequently Asked Questions below about the Dual Valves Intl. (SA) cc’s POPI readiness:

How is Dual preparing for POPI?

Dual is undertaking a comprehensive POPI project in South Africa, to enhance its already established internal controls to comply with POPI. Dual Valves’ POPI project involves a detailed assessment, remediation and validation of business processes, operational, IT (systems and applications), third party relationships and documentation to address any new and/or additional requirements under POPI.

How is Dual addressing POPI information security requirements?

We have an Information Security Policy in place, applicable to all information systems and applications used across the Company. We have policies and procedures in place for administrative, technical, and physical safeguards designed to appropriately protect the security, confidentiality, and integrity of Personal Information consistent with POPI.

The following measures were already in place prior to the coming into effect of POPI:

  • Internal policies for the secure handling of information;
  • Encryption tools and software to mitigate the unsecure sending of personal information outside our organisation;
  • Appropriate security systems in place to prevent unauthorized access and to combat malware, phishing and ransomware attacks;
  • Security measures in place where personal information is stored;
  • Ongoing colleague awareness and training on POPI.

How does Dual handle my Personal Information?

We handle your Personal Information in accordance with our internal policies and procedures as detailed above, and in accordance with our contractual obligations in providing our agreed services to you. We also handle your Personal Information in a manner to ensure our compliance with our sanctions, anti-money laundering and anti-corruption and other regulatory obligations.

Is Personal Information disclosed by Dual to any third parties?

Yes. In order to provide our agreed services to you and to help us operate effectively, we may disclose your Personal Information to insurers, agents, service providers and suppliers, our affiliates, regulators, or our professional advisors and auditors.

We may also disclose your Personal Information to any law enforcement agency, court, government authority, or other third party, where we believe this is necessary to comply with our legal or regulatory obligations, or to exercise our legal rights, and to a third party that purchases, or to which we transfer some, all or substantially all of our assets and/or business.

Where we contract third party services providers who may have access to your Personal Information on our behalf, we have an obligation to only appoint providers who can provide sufficient guarantees that the requirements of POPI, or other applicable data privacy laws, will be met, and the rights of data subjects, protected.

Is any Personal Information shared with Dual in South Africa transferred outside South Africa?

In certain circumstances, yes. There may be service providers that we engage that are located in countries outside of South Africa.

We may allow access to your Personal Information to parties outside South Africa. However, we have safeguards in place to protect any such data and require third parties receiving Personal Information and other confidential information, to agree to use and protect data consistent with applicable data privacy laws, including but not limited to POPI and The General Data Protection Regulation (“GDPR”).

Do we need to update any agreement in place with Dual for POPI compliance?

We do not require a new contract to be entered into, however you can access our Privacy Notices on our website www.dualvalves.com. If required we may provide you with an updated agreement.


1. Audience

This policy applies to all visitors to the Dual website and customers who have subscribed to the services we offer (“you” and “your”).

2. Purpose of this Policy

We respect your privacy and take the protection of personal information very seriously. The purpose of this policy is to describe the way we collect, store, use and protect information that can be associated with a specific natural or juristic person and can be used to identify that person (“personal information”). Personal information:

2.1 includes

  • Certain information collected on registration (see below); and
  • Optional information that you voluntarily provide to us (see below).

2.2 excludes

  • Information that has been made anonymous so that it does not identify a specific person;
  • Permanently de-identified information that does not relate or cannot be traced back to you specifically;
  • Non-personal statistical information collected and compiled by us and information that you have provided voluntarily in an open, public environment or forum including (without limitation) any blog, chat room, community, classifieds, or discussion board. Because the information has been disclosed in a public forum, it is no longer confidential and does not constitute personal information subject to protection under this policy.

3. Acceptance of Terms

You must accept all the terms of this policy when you register for any of our services. If you do not agree with anything in this policy, then you may not register for and use any of the services. You may not access our website or use our services if you are younger than 18 years old or do not have the legal capacity to conclude legally binding contracts. By accepting this policy, you are deemed to have read, understood, accepted, and agreed to be bound by all its terms.

4. Changes

We may change the terms of this policy at any time. We will notify you of any changes by placing a notice in a prominent place on the website or by email. If you do not agree with the change you must stop using the services. If you continue to use the services following notification of a change to the terms, the changed terms will apply to you and you will be deemed to have accepted such terms.

5. Collection

5.1 On registration.

Once you register on our website, you will no longer be anonymous to us as you will provide us with personal information.

This personal information will include:

  • Name, surname, company name, company registration number, VAT number
  • Postal address, email address, telephone number, postal code
  • Unique user ID, password

5.2 Collection on use.

In order to provide the Services to you, you will be asked to provide us with additional information on a voluntary basis such as (“Service information”).

5.3 Optional details.

You may also provide additional information on a voluntary basis (“optional information”). This includes content or product that you decide to upload or download from our website or when you enter competitions, take advantage of promotions, respond to surveys, register and subscribe for certain additional services, or otherwise use the optional features and functionality of the website.

5.4 Collection from browser.

We automatically receive and record Internet usage information on our hosting company’s server logs from your browser, such as your internet protocol address (“IP Address”), browsing habits, click patterns, version of software installed, system type, screen resolutions, colour capabilities, plug-ins, language settings, cookie preferences, search engine keywords, JavaScript enablement, the content and pages that you access on the website, and the dates and times that you visit the website, paths taken, and time spent on sites and pages within the website (“usage information”). Please note that other websites visited before entering our website might place personal information within your URL during a visit to it, and we have no control over such websites. Accordingly, a subsequent website that collects URL information may log some personal information.

5.5 Cookies.

When you access our website we may send one or more cookies (small text files containing a string of alphanumeric characters) to your computer to collect certain usage information. We use session cookies (which disappear after you close your browser) and persistent cookies (which remain after you close your browser which can be removed manually) and may be used by your browser on subsequent visits to our website. We use information gathered by cookies to improve the website.

5.6 Web beacons.

Our website may contain electronic image requests (called a “single-pixel gif” or “web beacon” request) that allow us to count page views and to access cookies. Any electronic image viewed as part of a web page (including an ad banner) can act as a web beacon. Our web beacons do not collect, gather, monitor or share any of your personal information. We merely use them to compile anonymous information about our website.

5.7 Purpose for collection.

We may use any service information and optional information provided by you for such purposes as indicated to you at the time you agree to provide such optional information. We may use your usage information for the purposes described in 5.4 and 5.5 above and to:

  • Remember your information so that you will not have to re-enter it during your visit or the next time you access the website;
  • Monitor website usage metrics such as total number of visitors and pages accessed; and
  • Track your entries, submissions, and status in any promotions or other activities in connection with your usage of the website.

6. Consent to Collection

We will obtain your consent to collect personal information:

  • In accordance with applicable law; and
  • At the time you provide us with any registration information and optional information.

7. Use

7.1 Messages and updates.

We may send administrative messages and email updates to you regarding the website. In some cases, we may also send you primarily promotional messages. You can choose to opt-out of promotional messages.

8. Disclosure

8.1 Sharing.

  • We may share your personal information with an affiliate, in which case we will seek to require the affiliates to honour this privacy policy.
  • Our service providers under contract who help with parts of our business operations (fraud prevention, bill collection, marketing, technology services). Our contracts dictate that these service providers only use your information in connection with the services they perform for us and not for their own benefit;
  • Credit bureaus to report account information, as permitted by law;
  • Banking partners as required by credit card association rules for inclusion on their list of terminated merchants (in the event that you utilise the Services to receive payments and you meet their criteria);

8.2 Regulators.

If you contact us regarding your experience with using any of our products, we may disclose your personal information as required of by law or governmental audit.

8.3 Law enforcement.

We may disclose personal information if required:

  • By a subpoena or court order;
  • To comply with any law;
  • To protect the safety of any individual or the general public;
  • To prevent violation of our terms of service.

8.4 No selling.

We will not sell personal information. No personal information will be disclosed to anyone except as provided in this privacy policy.

8.5 Marketing purposes.

We may disclose aggregate statistics (information about the customer population in general terms) about the personal information to advertisers or business partners.

8.6 Change of ownership.

If we undergo a change in ownership, or a merger with, acquisition by, or sale of assets to, another entity, we may assign our rights to the personal information we process to a successor, purchaser, or separate entity. We will disclose the transfer on the website. If you are concerned about your personal information migrating to a new owner, you may request us to delete your personal information.

8.7 Employees.

We may need to disclose personal information to our employees that require the personal information to do their jobs.

9. Security of Personal Information

We protect your personal information using computer safeguards such as firewalls and data encryption to protect personal information, and we authorize access to personal information only for those employees who require it to fulfil their job responsibilities.

10. Accurate and Up to Date

We will try to keep the personal information we collect as accurate, complete and up to date as is necessary for the purposes mentioned in clause 5.7. From time to time we will request you to update your personal information on the website. You are able to review or update any personal information that we hold on you by accessing your account online or by emailing us or phoning us. Please note that in order to better protect you and safeguard your personal information, we do take steps to verify your identity before granting you access to your account or making any corrections to your personal information.

11. Retention of Personal Information

We will only retain your personal information for as long as it is necessary to fulfil the purposes mentioned in clause 5.7, unless:

  • Retention of the record is required or authorised by law; or
  • You have consented to the retention of the record.

During the period of retention, we will continue to abide our non-disclosure obligations and will not share or sell your personal information.

12. Transfers of Personal Information Outside South Africa

We may transmit or transfer personal information outside South Africa to a foreign country. Personal information may be stored on servers located outside South Africa in a foreign country whose laws protecting personal information may not be as stringent as the laws in South Africa. You consent to us processing your personal information in a foreign country whose laws regarding processing of personal information may be less stringent.

13. Limitation

We are not responsible for, give no warranties, nor make any representations in respect of the privacy policies or practices of any third party websites.

14. Enquiries

If you have any questions or concerns arising from this privacy policy or the way in which we handle personal information, please contact us.


The information and materials (Materials) contained in this web site have been prepared solely for the purpose of providing information about Dual, its Principals’ products and partners to interested parties. Dual have made every effort to ensure that all information provided on our website is accurate and up to date. Dual takes no responsibility for any error or omission relating to this information. To the maximum extent permitted by law, Dual will not be liable for any cost, loss or damage suffered by you through your use of Dual website or Dual failure to provide access to this Internet website or information updates. By accessing and/or continuing to use this web site you agree that neither Dual, nor any of its officers, employees, agents, principals or contractors, will be liable for any direct or indirect loss or damage you may suffer or incur arising directly or indirectly from the use of any Materials on the Internet via web links from this site. You may download, store and use the Materials for personal and/or research purposes only.

The copyright in the Materials contained in this web site and this web site belong to Dual and its principals and therefore our or our principals’ copyright must remain on all reproductions of Materials from this web site. You may not republish, retransmit, redistribute or otherwise make the Materials available to any other party or make them available on any website, on-line service or bulletin board of your own or of any other party or make them available in hard copy or on any other media without the express prior written consent of Dual.


Welcome to our website. If you continue to browse and use this website, you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern Dual relationship with you in relation to this website. If you disagree with any part of these terms and conditions, please do not use our website. The terms Dual, Dual Valves, Dual or ‘us’ or ‘we’ refers to the owner of the website whose registered office is the corner of Rotterdam and Antwerp Street, Apex, Benoni, Gauteng. The term ‘you’ refers to the user or viewer of our website. The use of this website is subject to the following terms of use:

  • The content of the pages of this website is for your general information and use only. It is subject to change without notice.
  • This website uses cookies to monitor browsing preferences. If you do allow cookies to be used, the following personal information may be stored by us for use by third parties: name, location, membership number, IP address and browsing history.
  • Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any particular purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors to the fullest extent permitted by law.
  • Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
  • This website contains material which is owned by or licensed to us. This material includes, but is not limited to design, layout, look, appearance, photos and graphics. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions.
  • All trademarks reproduced in this website, which are not the property of, or licensed to the operator, are acknowledged on the website.
  • Unauthorised use of this website may give rise to a claim for damages and/or be a criminal offence.
  • From time to time, this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s). Some information provided on this Website has been obtained from third parties and is provided for informational purposes only. We are not liable for any inaccuracies in any third party information provided on this Web Site and does not endorse any of the activities, guides, vendors or service providers described. It is your responsibility to investigate the safety and suitability of any activity, and the credentials and fitness of any third party guide, vendor or service provider. We expressly deny any liability for engagement in any activity, and for use of any third party guide, vendor or service provider that may be mentioned or described on this Website. Additional fees, terms and conditions, and restrictions may apply to any activity or service and are determined solely by the third-party vendor, guide, or service provider. Please contact the third-party service provider, guide or vendor for complete details. We do not book, nor do we make any representations regarding the availability of third party activities or services.
  • Your use of this website and any dispute arising out of such use of the website is subject to the laws of the Republic of South Africa.
  • Words and expressions used in these website usage terms and conditions shall bear the ordinary meaning assigned to them unless the context dictates otherwise.