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V1-4 article


Proven under Pressure

Specify ValvTechnologies large-diameter, large-bore V1-4 valves when the pressure is on. Their “absolute zero leakage” and long life are proven in use, from refineries to mining facilities worldwide.  Patented RAM® hard coatings deliver outstanding resistance to abrasion and corrosion, for a lifetime of effective operation in remote or harsh locations.  And you can special-order connections beyond standard butt-weld and flanged and all the process-specific options you need to meet the demands of your own application.

Key Benefits

  • Broad-range 4 to 36 inch sizing offers flexibility in full isolation
  • Match ASME pressure classes 900 to 4500 with forged pressure-containing parts
  • Extended service life due to integral seats, hard coated parts
  • Live loaded packing reduces the need for adjustments, lengthens service intervals
  • Multiple options – purge ports, cavity fillers, emission bonnets, special linings

Design Features

  1. Integral Metal Seat. With our patented Ceramet and Rocket Applied Metallic (RAM) coatings, the integral seat in ValvTechnologies’ rotary operating valves are resistant from the attack of abrasive magnetite or ferrous oxides in the steam flow.
  2. Body Seal Ring. ValvTechnologies employs a field proven seal ring technology to ensure sealing under all operating conditions, up to 1400o F. The body seal ring is loaded at a pressure higher than 20,000 psi. In addition, valves sized 3 inch and above contain a secondary Grafoil seal to further guarantee reliability
  3. Patented Coating Process. The sealing surfaces are overlaid with Tungsten or Chromium Carbide using our exclusive RAM® process. These surfaces have a hardness of 68 - 72 Rc to allow long periods of operation in the most severe conditions.
  4. Live Loaded Gland Area. The V1 Series gland packing design features a four stud, live-loaded assembly designed for heavy industrial applications. The packing material is high purity Grafoil® surrounded by Carbon Fiber / Inconel anti-extrusion rings. The six Bellville springs (per stud) provide constant load pressure through extreme thermal shocks and prevent wear leaks in high cycle service.
  5. Blow-out Proof Stem. ValvTechnologies design utilizes a one piece, hard-faced, blow-out proof stem that is inserted through the inside of the body cavity eliminating the possibility of blow-out through the gland area.


Technical Data


4 – 36 inches

Pressure Classes

ASME / ANSI Class 900 – 2500

Materials of Construction

Carbon Steel (A105) - standard Stainless Steel (316H) - standard Alloy Steel Duplex Steel Exotic Alloys Other materials available upon request

In Compliance

ASME B16.34 API 6D PED N & NPT – Nuclear Authorized

End Connections

Raised Face Flange – standard Other end connections available upon request


Construction to API 6A Purge ports Bi-directional sealing Wafer style Actuator mounting


V1-1 article
V1-2 article
V1-3 article

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