Welded body ball valve

Typically a valve body consists of 2 or 3 pieces that are bolted together and smaller ones are screwed. However it is also possible to have the body without bolts. The valve body parts are than welded together.
With the smaller valves which are screwed it is a sealweld.

With larger valves the body parts are welded together. Generally there are 2 construction types:

  • similar to the bolted type but instead of bolted these parts are welded together
  • formed body parts which are welded together

The advantage of the formed parts is that they have smaller dimensions and are lighter.
The overall advantage of the (seal) welded body is that they have less potential leak paths.


Isolation valve for above ground and buried pipeline installations; long-term gas storage facilities; compressor, gathering, and metering stations; gas terminals; residential gas installations; onshore and offshore production and gas and LNG processing; and subsea isolation


  • Superior stem sealing performance.
  • Compliant with low-emissions environmental standards.
  • Spherical body design that maximizes strength with reduced weight.
  • Low maintenance.
  • Low cost of ownership.
  • Extended service life and sealing reliability.


  • All-welded construction.
  • Sealing options in self relief (T31) or double piston effect (T32), or a combination of both (DIB2).
  • Double block-and-bleed standard in both closed and open positions.
  • Antiblowout stem design.
  • Thermoplastic seals with no aging effect and no susceptibility to explosive decompression.
  • Belleville springs that maintain constant spring force and protect seat-to-body seal.
  • Robust stem stops that withstand actuator torque.
  • Stem stop viewports that enable verification of proper valve position.
  • Seat and stem injection port with internal check valve.
  • Rotating seats that spread wear over the entire sealing surface for longer service life.

Longer service life

The CAMERON T30 Series valve can be equipped with a mechanism that makes both seat rings rotate at the end of the closing operation. Rotating seat rings are self-cleaning, distribute wear, ensure optimal sealing contact, and facilitate the distribution of any injected flush, grease, or sealant.

CAMERON T30 Series valves are available for pressure classes ASME 150 to 2500 (PN 20 to PN 420) as well as API 2000 to 5000 standards.
Made of forged steel to ensure uniform fine grain structure and toughness, they can be specified in sizes from NPS 2 to 56 (DN 50 to 1400).
These valves are also fire tested to API and ISO standards.

Superior stem sealing performance

These valves include an adjustable and replaceable seal in an antiblowout stem design. In addition, a low-emissions environmental standard design is also available.

Fully welded with a forged spherical body .

The distinctive design of the CAMERON T30 Series valve maximizes strength at reduced weight and improves resistance to pipeline pressure and stresses with less wall thickness. The compact, spherical design also eliminates body flanges, reducing overall size and potential leak paths.

Low maintenance without removing pressure from the pipeline.

Designed to eliminate the need for lubrication, the CAMERON T30 Series valve enables maintenance without reducing pressure or removing the valve from the pipeline.

Low cost of ownership

This valve is designed to minimize material for a lower weight, lower costs for installation and transportation, and minimal maintenance, which improves production uptime.

Grove was founded in 1934 in California by Marvin Grove, in 1971 Grove Italy was founded and became the HQ in 1986. A true pioneer in the industry: API 6D license #001, API 6DSS license #003.

Quick (stock) delivery possible for a selection of Grove valves

Grove trunnion mounted bolted body ball valves & welded body ball valves and through conduit slab gate valves.​

Application areas: emergency shutdown, pigging, custody transfer, metering skids, risers, transmission pipelines, production plants, subsea, LNG, onshore, offshore, subsea, etc.​

B4        : API 6D forged bolted side entry 3-piece trunnion
mounted ball valve. (B4.B, B4.C & B4.D)​
Size     : 1” – 4”​
Rating : #150 – #1500 (incl. #400)​

B5       : API 6D forged bolted side entry 3-piece trunnion
mounted ball valve. ​
Size     : 6” – 60”​
Rating : # 150 – #1500 (incl. #400)​

B7       : API 6D forged bolted side entry 3-piece trunnion
mounted ball valve.  (B7.1 & B7.B)​
Size     : 1 ½” – 20”​
Rating : #2500​

B8       : API 6D forged welded side entry “3-piece” trunnion
mounted ball valve (B8, B8.1 & B8A)​
Size     : 2”- 60”​
Rating : #150 – #2500 (incl. #400)​

BT       : API 6D top entry cast trunnion mounted ball valve (BT1
& BT2)​
Size     : 1 ½” – 60”​
Rating : #150 – #2500​

G4N  & G7 : API 6D through conduit double block & bleed (DBB)
slab gate valve.​

International Standard Valve is a manufacturer located in Stafford USA and are approved by ExxonMobil, Chevron, Tengizchevroil, Kinder Morgan, etc. and are API 6D approved.​

ISV floating and trunnion mounted ball valves

API 6D Trunnion mounted ball valve DBB, DIB-1 & DIB-2​
Construction : 3 piece forged welded body (BT3G & BT3GU )​
Size              : 2” – 56”​
Rating           : #150 – #2500​
Construction : 3 piece forged bolted body (BT3G & BT3GU)​
Size              : 2”- 48”​
Rating           : #150 – #2500​
Construction : 2 piece cast bolted body (BT3E & BT3EU)​
Size              : 2” – 12”​
Rating           : #150 – #1500​

API 608 & B16.34 floating ball valve (BF1BU, BF1A, BF1EU, BF2EU, BF2E, BF2D, BF0A, BF0C, BF0E, BFoE-CF)​
Construction: 2-piece bolted
size              : ½” – 10”
Rating          : #150-600
Port              : RB & FB
Material        ​:WCB/LCC/CF8M/CN7M/Hastelloy/Duplex​

Construction: Uni body
size              : 1”- 8”
Rating          : #150
Port              : RB
Material​        : WCB/LCC/CF8M/CN7M/Hastelloy/Duplex​

Construction: 3-piece bolted
size              : ½” – 2”
Rating          : #600-1500
Port              : RB & FB
Material        ​: A105/LF2/F316/F51/Inconel​

Construction: Cryogenic
size : ½”-10”
Rating : #150-600
Port : RB & FB
Material​ : CF8M​

Construction: 3-piece bolted
size : ½”-2”
Rating : #150-1500
Port : RB & FB
Material ​: A105/LF2/F316/F51/Inconel​

Construction: 3-piece bolted
size : ½”-2”
Rating : 1500&2000 WOG
Port : FB
Material​ : WCB/CF8M/CN7M​

Construction: 2-piece seal welded
size : ½”-2”
Rating : 2160&2200 WOG
Port : RB
Material ​: WCB/CF8M​

Construction: Uni body
size : ½”-2”
Rating : 2000 WOG
Port : RB
Material​ : WCB/CF8M​

Construction: 2-piece threaded
size : ¼” – 4”
Rating : 1000 WOG
Port : FB
Material ​: WCB/CF8M​

Construction: 3-piece bolted
size : ¼” – 4”
Rating : 1000 WOG
Port : FB
Material ​: WCB/CF8M/CN7M/Hastelloy/Duplex​

Need to let it flow? Call on Wegman!