•Double Block Bleed Trunnion Ball Valve

Petroleum application field

RSV has developed a comprehensive portfolio of innovative products designed to meet the needs and expectations of customers in the world's largest and fastest growing economies. While the oil industry is constantly changing to meet the needs of consumers, RSV is constantly changing to meet the needs of the industries it serves.

Natural gas application areas

RSV understands the oil and gas industry's critical need for complete cut-off, reliable pressure and flow control. Ongoing natural gas application research and development, as well as on-site customer support, valve analysis and maintenance/repair services, provide customers with a high level of confidence and support.

Marine application field
The all-metal design of sea water resistant valves and stainless steel fittings, fast and reliable delivery, and the corresponding shipbuilding certification make RSV your partner in the field of shipbuilding. Monitoring and alarm function.

Marine application field
In the face of complex and changing offshore environments, RSV Vanco products have proven to be a reliable and reliable partner in the field of Marine technology. Among them, in the Marine valve-controlled liquid level system, RSV can easily be competent for the required signal acquisition and regulation in the system, so as to achieve monitoring and alarm functions.

Industrial application field

With the continuous development of industrial technology, science and technology change with each passing day, people's clothing, food, housing, travel are inseparable from energy, and the degree of dependence on energy is getting higher and higher. The main purpose of the valve is to control the flow of media through the system.

Chemical application field

Under normal circumstances, the chemical industry uses the flow channel as a straight-through valve, the reason is that the flow resistance is small, and the valve with the cut-off and open medium is usually selected, such valves are easy to adjust the flow as a control flow valve, ball valves and plug valves are suitable for reversing shunt, and the closing parts slide along the sealing surface with the wiping function of the valve. Such words apply to media with suspended particles.

Metallurgical application field
The all-metal design of sea water resistant valves and stainless steel fittings, fast and reliable delivery, and the corresponding shipbuilding certification make RSV your partner in the field of shipbuilding. Monitoring and alarm function.

Power application field
In the face of complex and changing offshore environments, RSV Vanco products have proven to be a reliable and reliable partner in the field of Marine technology. Among them, in the Marine valve-controlled liquid level system, RSV can easily be competent for the required signal acquisition and regulation in the system, so as to achieve monitoring and alarm functions.

Double Block Bleed Trunnion Ball Valve

Design Technical Features

Size：1/2~24”(DN15~DN600)

Class：CL150~2500 (PN10~PN420)

Materials：A105, LF2, 304, F316, F51, Super Duplex Stainless Steel，Nickel-based Alloy，Titanium and other special materials

End connection：RF、BW、HUB

Seat：Soft seated/Metal seated

Operation：Lever、Electric Motor、Pneumatic and Hydraulic

Optional: Stem extension for cryogenic service.

Main Features

Fire-Safe Test Approved

Double Block & Bleed valves are designed in accordance with API 607 & API SPEC 6FA.

Double Body Gasket

All BFE Double Block & Bleed valves are equipped with two body gasket. The first body gasket is in soft material and the

second in graphite (if not otherwise required), this combination assures the best seal characteristic in whatever corrosive service as well as giving a fire safe design.

Anti-Static Device

In order to prevent static electricity which may light the fluid, static-conduction spring is set between the stem and the ball.

Anti Blow-out Proof Stem

The stem is designed with integral T-Type shoulder to provide blow-out proof effectively. The design assures that the stem

can not be blown out of the valve in the case of the packing being removed while the valve is under pressure.

Controlled Stem & Stuffing Box Finish

Stem and stuffing box finish machining is a key point of control. The stem is made by cold rolling and stem surface finish is controlled by Ra=0.4, which can reduce friction of stem movement and ensure the seal. The stuffing box surface is controlled within Ra=1.6 for better sealing performance.

OFFICE HEADQUARTERS

ZHEJIANG REDSTAR VALVE CO.,LTD Add: Fifth Floor, Huadun Technology Building No. 1, Madao South Road, Jiangbei Street, Oubei , Yongjia , Wenzhou City, Zhejiang, China

Tel：0086-577-66999238

Fax：0086-577-66999235

E-mail: sales@rsv-valve.com

MANUFACTURING BASE

Add.: No. 10, Baixian Road, Nanmingshan Street, Liandu District, Lishui City, Zhejiang , China

Tel：0086-578-2703096

E-mail: sales@rsv-valve.com

SELLING CENTRE

Add: Fifth Floor, Huadun Technology Building No. 1, Madao South Road, Jiangbei Street, Oubei , Yongjia , Wenzhou City, Zhejiang, China

Tel：0086-577-66999236

Fax：0086-577-66999235

E-mail: sales@rsv-valve.com

Official Accounts

Redstar Valve Co.,Ltd

Marine application field

Marine application field

Metallurgical application field

Power application field

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Floating ball valve

DBB&SBB

Cryogenic valve

Butterfly valve

Top entry valve

Fully welded valve

GGC

Service concept

Training and guidance

Production test

After-sales service