Valves

Expanding Gate

The expanding gate valve design uses a two piece wedged shape gate assembly to generate positive sealing. When moved to the opened or closed positions, gate segments expand out to the seats creating a mechanical energized seal for reliable performance. Valves are full bore through-conduit which do not restrict flow. A non-rising stem is used for better control and dependability.

Valves are available in pressure ratings from 2,000 to 5,000 psi. Standard bore sizes are from 2 1/16" to 4 1/16". A variety of trim designations and valve styles are described on the next page.

Slab Gate

The slab gate valve design uses a solid gate with two floating seats to generate a bidirectional, highly reliable seal. A slab gate eliminates the possibility of trapping pressure within the body cavity which can result in pressure locking. Valves are full bore through-conduit which do not restrict flow. A non-rising stem is used for better control and dependability.

Valves are available in pressure ratings from 2,000 to 20,000 psi. Standard bore sizes are from

2 1/16" to 7 1/16". A variety of trim designations and valve styles are described on the next page.

 

TRIM CHART

SERVICE
API
MATERIAL
CLASS
BODY & BONNET
SEAT
GATE
LOWER STEM
UPPER STEM
STEM PACKING
MUD
FLAPS/GATE
GUIDES
GENERAL - OIL & GAS
AA
Forged Alloy Steel
Alloy Steel
Nitrided
Alloy Steel
Nitrided
Alloy Steel
Nitrided
Alloy Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
GENERAL - LOW CO2
BB
Forged Alloy Steel
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
GENERAL - HIGH CO2
CC
Forged Stainless Steel
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
SOUR - H2S
DD
Forged Alloy Steel
Alloy Steel
Nitrided
Alloy Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
SOUR - H2S & LOW CO2
EE
Forged Alloy Steel
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
SOUR -HIGH H2S & HIGH CO2
FF
Forged Stainless Steel
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Stainless Steel
Nitrided
Graphite Filled
Teflon
PTFE/Nitrile
EXTREME SOUR - HIGH H2S,
HIGH CO2, HIGH CHLORIDES
HH
Forged Alloy Steel
with CRA Overlay
CRA, Hardfaced
CRA, Hardfaced
CRA
CRA
Graphite Filled
Teflon
PTFE/Nitrile
NOTES: 1) CRA (Corrosion Resistant Alloy) as defined by API Specification 6A. 2) The above trim chart is for general information only. Other trims are available upon request. 3) Hardfacing of gates and seats is available.

 

CONFIGURATIONS

Flanged End Screwed End Single Block Dual Block