Type G — fully welded ball valve for gas transmission pipelines, ½″–60″, up to Class 1500
The Type G ball valve is fully welded and can be installed above ground and underground on transmission pipelines, compressor stations and platforms. Sizes are ½″ to 60″, design pressure up to CLASS 1500, temperature from −60 to +160 °C depending on the version. It is intended for natural and sour gas, oil and water.
- Type
- fully welded maintenance-free ball valve, ½″–2″ floating ball (up to 100 bar), then trunnion-mounted ball with spring-loaded self-centring seats
- Sizes
- ½″–60″
- Pressure class
- up to CLASS 1500
- Temperature
- standard −29…+50 °C; min. −60…+50 °C; max. −29…+160 °C
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Type G is a fully welded, maintenance-free ball valve for above-ground and underground installation on transmission pipelines, compressor stations and platforms. It handles natural and sour gas, oil, including sour oil, and hot and cold water. The fully welded body eliminates detachable joints through which leaks could occur. The maintenance-free seal and support technology allows the valve to be buried in the ground without access to internal parts for its entire service life. The spherical shape of the body withstands high pressure and bending moments from the pipeline at low weight.
Sizes range from ½″ to 60″, with design pressure up to CLASS 1500. Valves of ½″–2″ have a three-piece body with flanges or butt-weld ends and a floating ball. From 2″ at pressures above 100 bar and in all larger sizes (3″–12″ and 14″–56″) a trunnion-mounted ball with self-centring spring-loaded seats is used. The stem is protected against blow-out and has a double independent seal with an additional fire-resistant packing. The design is antistatic and allows the passage of cleaning and inspection pigs. The closure is sealed by one of three systems, namely PMSS (primary metal, secondary soft), SO (soft) or MM (metal to metal), and the seats may have a single or double piston effect. From 14″ a borescope inspection port is provided as standard.
The standard temperature range is −29 to +50 °C, with a low-temperature version from −60 °C and a high-temperature version up to +160 °C. The body is made of P355NL1 or A350 LF2, the ball of A350 LF2 with chrome or nickel plating, the flanges of C21/A105 or A350 LF2, the stem of S420NL or A276 type 420, and the seat rings of 1.4006 or A182 F6a with partial chrome plating. Other materials are available on request. Connections are flanged, butt-weld or with welded-on flanges.
The valve has been tested at high differential pressure across the seat, has a fire-safe design and holds TA-Luft approval. Compliance and approvals cover API 6D (monogram), API Q1, PED, AD2000-HP0 and W0, DVGW, ÖVGW, SVGW, DIN EN 14141, ISO 14313, EN 12266 and API 6FA / BS 6755. The valve is suitable for use in SIL systems. It is fitted with the manufacturer's gas-hydraulic, pneumatic, electro-hydraulic and manual actuators. The EC type-examination certificate under Directive 2014/68/EU covers sizes DN 1 1/4″ – DN 56″, so the extreme sizes of the ½″–60″ range need to be confirmed.
Technical specifications
| Type | fully welded maintenance-free ball valve, ½″–2″ floating ball (up to 100 bar), then trunnion-mounted ball with spring-loaded self-centring seats |
|---|---|
| Sizes | ½″–60″ |
| Pressure class | up to CLASS 1500 |
| Temperature | standard −29…+50 °C; min. −60…+50 °C; max. −29…+160 °C |
| Sealing systems | PMSS (metal/soft), SO (soft), MM (metal to metal); single or double piston |
| Design | antistatic, pig passage, blow-out-protected stem, triple stem seal with fire-resistant packing, borescope inspection port from 14″ |
| Materials | body P355NL1 / A350 LF2; ball A350 LF2 chrome/nickel plated; stem S420NL / A276 type 420; seat 1.4006 / A182 F6a |
| Connections | flanged, butt-weld, welded-on flanges |
| Media | natural and sour gas, oil, sour oil, hot and cold water |
| Standards and approvals | API 6D (monogram 6D-2103), API Q1, PED, AD2000-HP0/W0, DVGW, ÖVGW, SVGW, DIN EN 14141, ISO 14313, EN 12266-1/-2, API 6FA / BS 6755, TA-Luft; suitable for SIL |
Request a price and lead time
Type G — fully welded ball valve for gas transmission pipelines, ½″–60″, up to Class 1500. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What sizes and pressure class does the Type G valve have?
Sizes from ½″ to 60″, design pressure up to CLASS 1500. Valves of ½″–2″ have a floating ball, and larger sizes have a trunnion-mounted ball.
What is the temperature range and what are the body materials?
Standard −29 to +50 °C, a low-temperature version from −60 °C and a high-temperature version up to +160 °C. The body is made of P355NL1 or A350 LF2.
Which standards and approvals does the valve meet?
API 6D (monogram), API Q1, PED, AD2000-HP0 and W0, DIN EN 14141, ISO 14313, EN 12266, and TA-Luft approval. The valve is suitable for SIL systems.
Similar equipment from other manufacturers
