SPLIT BODY TRUNION BALL VALVE SPECIFICATIONS

Batu API 6D trunion ball valves are designed to include many features for you as a result of a detailed R&D study. Extra options are available upon request.

LOW TORQUE BALL VALVES

SPLIT BODY TRUNION BALL VALVE SPECIFICATIONS

ANTI–BLOWOUT STEM DESIGN

ANTI–BLOWOUT STEM DESIGN
Our Ball valves are designed and manufactured in such a way that when the movement shaft holders and seals are removed, it will not be possible for the stem to go out of the valve due to the effect of pressure, as described by the standards. The stem is designed with a wide lower flange. In this way, the body cover part prevents the stem from dislodging and prevents a possible explosion. This feature allows the shaft seal to be replaced even when the valve is under pressure.

FIRE-SAFE DESIGN

FIRE-SAFE DESIGN
Bonnet
BatuValve ball valves have been subjected to fi re tests in accordance with API 6Fa and ISO 10497 standards. Regardless of the soft seat material, they will likely be damaged when exposed to fire conditions. BatuValve offers a fire resistant design that can greatly prevent leaks from seals when valves are damaged by fire. If Teflon and O’ring materials are damaged, a metal-to-metal seal is formed between the secondary metal seat and the ball. The slot-to-body graphite seals, graphite body seals, and graphite gasket end caps are designed to withstand high temperature and will remain undamaged.
API 6 D Seat
Seat
API 6 D Body
Body
API 6 D Trunnion
Trunnion

DRAIN & VENT DESIGN *

Valves are manufactured with drain and vent discharge outlets designed in accordance with the connection dimensions defined by the standards for the safe discharge of the pressurized fluid or gas remaining in the body when the valves are brought to the closed position.

ANTI STATIC DESIGN

Ball Valves used in flammable and combustible fluid circuits such as petrol, LPG, LNG must be protected against static electricity. The spring and ball used in the stem ensure that any static electricity that may occur is grounded to the pipeline. In this way, the electrostatic charge that may occur on the ball is prevented. BATU Ball Valves are designed and manufactured in accordance with these requirements.

LUBRICATION AND EMERGENCY SEALANT INJECTION *

Bonnet
Cover
Glacers on the bonnet and covers allow easy lubrication of the drive shaft and the hoops. Lubrication should be carried out periodically. These greaser can be used to inject sealant in emergency situations such as fire and other accidents.

LOW TORQUE

Throat
Seat
All split body trunnion ball valves have a very low torque value. Every valve produced is subjected to torque test.

HIGH PRESSURE – LOW PRESSURE SEALING DESIGN

The sealing performance of the ball valves at higher pressures are more important than at low pressures. At high pressures, sealing is ensured by forming a good contact between the sealing ring and the ball surface with the effect of the fl uid pressure applied from the back surface of the Sealing seat ring. When the pressure behind the ring reaches a low value, this contact force decreases. In this case, the spring force supporting the seat ring ensures enough force is applied so the contact between the sealing ring and the ball surface and the sealing function are maintained.

SEAT RING DESIGN

SOFT SEAT DESIGN

Soft Seat Design
Primary Metal Secondary Soft Seat Design
In standard trunnion ball valves, a flexible tefon material is placed between the seat and the ball to provide a soft seating motion and sealing in addition to the metal-to-metal fit.

METAL TO METAL SEAT DESIGN *

Figure-3 - Metal to metal hoop design
If there are abrasive substances in the pipeline or temperatures that prevent the use of Teflon, metal-to-metal hoop designs may be preferred. The areas where the ball and the seat touch each other have a hard surface.

DOUBLE SEAT DESIGN *

Trunnion valves use double seat and double teflon to achieve greater sealing.

SEAT

SINGLE PISTON EFFECT (SPE)

This is the standard type of bearing. When pressure is applied from both sides, SPE bearings are pushed towards the ball by the piston effect, providing a tight closing and sealing. If the pressure in the body cavity exceeds the pressure on either side of the line while the valve is in the closed position, the bearing on that side will be pushed back and the body pressure will be discharged to the low-pressure side of the line. Due to this feature, SPE type bearings are also called “Self-pressure relieving”, which discharge high pressure on their own.

 

Typical Application Areas: Pipeline ball valves in liquid services where it is necessary to prevent pressure increase in the body cavity due to temperature changes.

DOUBLE PISTON EFFECT (DPE) *

It is an optional ring-seat type. DPE seats are designed to be pushed towards the ball by the piston effect in both cases, whether the pressure comes from the valve body cavity or from the upstream or downstream side of the pipeline. DPE seated valves do not automatically release the pressure in the body cavity. Therefore, it is recommended to use a relief valve in liquid services.

 

Typical application areas; It is recommended in welded body valves when it is necessary to create an additional safe barrier between the upstream and downstream sides and where the maintenance of the seats is not foreseen.

SINGLE/ DOUBLE PISTON EFFECT COMBINATION (SPE-DPE) *

Upstream of the line, the SPE seat provides self-pressure relief. Downstream, the DPE seat provides a double barrier in case of damage to the upstream seat. This configuration includes a preferred installation orientation with the SPE seat facing upwards. With SPE-DPE configurations, the cavity discharge always occurs via the SPE seat.

 

Typical applications: Booster valves, Pig launchers / receivers. The DPE seat provides double insulation to the Pig trap and also allows automatic relief of the body cavity in the event of pressure build-up.

DOUBLE BLOCK AND BLEED DESIGN (DBB)

This is the standart seat type. When pressure is applied on both sides, SPE-SPE seats are pushed towards the ball with the effect of a piston, providing a tight closing and sealing. If the pressure in the stem cavity rises above the pressure on either side of the line while the valve is in the closed position, the seat on that side will be pushed back and the in-shell pressure will be released to the low pressure side of the line. Due to this feature, SPE type seats are also called “Self pressure relieving”, which releases high pressure by itself. Typical Fields of Application: Pipeline ball valves in fluid services where the pressure increase in the body cavity due to temperature changes is required.

DOUBLE ISOLATION AND BLEED (DIB 1) *

It is an optionally available seat type. DPE seats, whether the pressure comes from the valve body cavity or from the upper or lower side of the pipeline; In both cases, it is designed to be pushed towards the sphere by the piston effect. DPE seated valves do not automatically relieve pressure in the body cavity. For this reason, the use of a drain valve is recommended in fluid services.

 

Typical application areas; where it is necessary to create an additional safety barrier between the upstream and downstream sides and where maintenance of the seats is not envisaged. It is also recommended for valves with welded body.

DOUBLE ISOLATION AND BLEED (DIB 2) *

On the upstream side of the line, the SPE seat provides self-pressure relief. On the downstream side, the DPE seat provides a double barrier in case the upstream seat is damaged. This confi guration includes a preferred installation direction with the SPE seat facing up. With SPE-DPE confi gurations, the cavity pressure evacuation always takes place via the SPE seat side.
* Specify during the order.
BATUSAN reserves the right to change design, construction and material while staying within the standards.