THROUGH CONDUIT GATE VALVES

A Through Conduit Gate Valve is a specialized type of gate valve designed to offer full-bore, unobstructed flow when in the open position, ensuring minimal pressure drop and turbulence in pipeline systems. It is widely used in industries where smooth flow, low-pressure loss and operational flexibility are critical, especially in oil and gas, petrochemical, and other high-pressure applications. These valves are ideal for pigging operations due to their design, which allows pipeline pigs to pass through without any obstruction.

Through Conduit Gate Valves can be divided into two different types:

Slab Gate Valves
• Features a single slab that moves up and down between the seats.
• Provides reliable sealing in high-flow applications and offers a cost-effective solution for basic on/off control.
• Suitable for high-pressure systems, but does not provide as tight a seal as an expanding gate in low-pressure applications.

Expanding Gate Valves
• This type of valve has two segments that expand against the seats, forming a tighter seal.
• it is typically used in critical applications where zero leakage is required, both in high and low-pressure environments.
• Expanding Gate Valves are often favored in isolation and emergency shutoff applications, where reliable sealing is essential for safety.

SUITABLE APPLICATIONS

• Chemical processing • Nitrogen service
• Oil & Gas services • Shipbuilding industry
• Water treatment service • Drilling mud service
• Power generation • Cold start air
• Completion fluids • Cement service
• Food & Beverage industry • Marine industry

UNIQUE FEATURES

• Precise flow control • Reliable performance
• Excellent shut-off capability • Robust design
• Minimal pressure drop • Versatility

The standard in

Non-standard
Valves

Technical Specifications

Size inch (DN)
1/2" (15) - 12” (300)
ANSI class (lbs)
150 - 4500
API rating (psi)
3000 - 10000
DIN rating (PN)
10 - 400
API 600
EN-1984
API 602
ASME B16.34
API 603
DIN
ISO 10423 (API 6A)
Russian GOST
ISO 10434 (BS1414)
NORSOK
ISO 14314 (API 6D) (BS5352)
PED
ISO 15761 (BS5352)
Manufacturer standard
Pressure
Vacuum to 765 bar(g)
Temperature
-196°C to +850°C
Bolted Bonnet, O.S.&Y., Back seated
Screwed-in Seal Welded Bonnet, O.S.&Y., Back Seated
Pressure Seal Bonnet, O.S.&Y., Back Seated
Handwheel Operated
Gear Operated
Actuated
Solid parallel slide
Single expanding parallel slide
Double expanding parallel slide
Renewable, pressure or spring activated
Tungsten Carbide Coating
Chrome Carbide Coating
Stelliting
Kolsterising®
ISO 5208
ISO 14313 (API 6D)
API 598
EN 12266 Part 1/2
ISO 10423 (API 6A)
Clients’ specification
Flanged (FF / RF / RTJ)
Butt Weld
Socket Weld
Hubbed or Mechanical Ends
Compact Flanged
Clients’ specifications