Profile: Viatran deals with water/wastewater, industrial test & control, sanitary pressure and level transmitters. We also provide isolator, oil and gas process. We cover automotive product, oil products and sanitary products. We are an ISO 9001:2008 certified company. We offer a wide variety of robust pressure transmitters with volt output which have been designed specifically for harsh and rugged environments in a variety of industries. AT-1000 freeze valve has two operating positions, a full flow position for testing and/or purging & a restricted flow position for testing. A liquid-phase sample is allowed to flow through the valve under the full flow condition to chill the valve housing by cooling effect of the change from a liquid to a gaseous state. A spring loaded valve stem and cam action actuator provide instantaneous switching from the full flow conditions to the testing condition. The valve and test method are particularly suited for use outside laboratory. If the freeze time indicates that the product may cause freezing, faulty operation of pressure reducing regulators may occur and thus an anti-freeze agent may then be added, if desired.