| |
| |
In the Oil & Gas industry, valve
performance can be compromised by combinations of process conditions such as
high temperature, high pressure, high solids or high cycles. The
Valvtechnologies design is quite unlike that found in floating and
trunnion-style ball valves and is a complete departure from the traditional
gate and plug valves found in this industry.
|
| |
| |
The Valvtechnologies design
uses an integral seat rather than loose seats. The integral seat provides a
stable platform onto which the ball is constantly loaded with very high force,
making it impossible to trap solids between the ball and seat. When the ball is
in the open position, the seats are protected from the flow. The integral seat
also eliminates the potential for leakage between a loose seat and the valve
body.
|
| |
| |
The ball and integral seat are hard coated with chrome carbide or
tungsten carbide using Valvetechnologies' proprietary Rocket Applied Metallics
(RAMT) process. This increases the surface hardness by nearly an order of
magnitude beyond that of conventional weld-overlay hardening techniques. High
surface hardness makes the sealing surfaces impervious to erosion and abrasion.
The base metal is not altered by the hard coating, and maintains compliance with
the hardness requirements of NACE MR0175.
|
| |
| |
A high-strength Belleville
spring provides force to load the ball into the seat. This design solves many of
the problems related to buildup and corrosion in trunnion bearings and
eliminates free space between the ball and seat. Unlike the floating-type ball
valves, the Valvtechnologies design does not require upstream pressure to
provide tight sealing. The spring also makes the valve inherently self-relieving
and provides anti-static protection.
|
| |
| |
|
| |
Valvtechnologies is fire-tested to API 607 Rev. 4.
|
| |
| |
The non-pinned, blowout proof stem provides a
measure of safety and reliability that is essential in critical service valves.
The stem is inserted internally when the valve is assembled. Live-loaded Grafoil
and Stainless Steel packing guarantees zero stem emissions. The Valvtechnologies
design is inherently firesafe and exceeds the fire test requirements of API 607
Rev. 4. The valves are available in sizes 1/2" to 42" in a wide variety of
materials and in ANSI pressure classes 150-4500 and API 5,000-20,000.
Bi-directional and double block/bleed configurations are also
available.
|
| |
| |
Valvtechnologies valves last longer and reduce maintenance costs
|
| |
| |
|
| |
| |
|
