Cast Steel Trunnion Mounted Ball Valve

LYV®️ is a China professional cast steel trunnion mounted ball valve supplier.This valve is a high-performance product that meets international standards like API-6A, API-6D, ASME-B16.34, ISO-17292 as well as API-6FA fire certification, which prove product has capacity to use for various fire safe requested applications.It's features high safety, sealing performance and durability, and is suitable for various fire safe requested applications.

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Introduction

Product Introduction

LYV® Cast Steel Trunnion Mounted Ball Valve made in China is an industrial valve with a dual fixed ball design featuring a top ear shaft and a bottom support shaft, and is widely used in fire safety scenario designs. In the event of an unexpected fire, it can effectively isolate flammable media and prevent the fire from spreading along the pipeline. Its core advantages lie in its fire-resistant structure, reliable sealing and safe operation. It is an essential equipment for key fire safety pipelines in petroleum, chemical, offshore platforms and flammable and explosive medium transportation systems.

LYV®️ as a manufacturer producing Fire Safe Cast Steel Trunnion Mounted Ball Valve can manufacture NPS 2” to NPS 48” trunnion mounted ball valve, maximum pressure rating can reach to 2500LB. Furthermore, LYV®️ has conditions and experience to produce low-temperature trunnion mounted ball valve. Contact us for more information.

Specifications

Size Range:

NPS 2”-48”; DN50-DN1000

Nominal Pressure:

150LB-2500LB; PN10-PN420

Temperature Range:

-196℃~825℃（depends on design and material）

End Connections:

Flange; Butt-weld.

Body Materials:

ASTM A216 WCB/WCC; ASTM A352 LCB/LCC; ASTM A351 CF8/CF8M/CF3/CF3M/CF8C; ASTM A890 4A/5A/6A;

ASTM A105; ASTM A182 F304/F316/F304L/F316L

Ball Materials:

ASTM A105N+ENP/A105N+TCC; ASTM A182 F304/F316/F304L/F316L; ASTM A182 F347/F51/F53/F55

Seat Materials:

PTFE/RPTFE/FPM/PEEK; 304/316+STL/INCONEL

Stem Materials:

ASTM A182 F6A; ASTM A182 F304/F316/F304L/F316L; 17-4PH; ASTM A182 F51/F53/F55

Design & Manufacture Standard:

API 6D

Face-to-face Standard:

ASME B16.10/ EN558-1

End Connection Standard:

ASME B16.5/ ASME B16.25

Test & Inspection Standard:

API 598

Features

■ Soft or metal seat available

■ Solid ball

■ RF,RTJ,BW Connection face

■ Two- or three- piece body

■ Bi-directional tight shut-off

■ Zero leakage

■ Double block & bleed (DBB) / Double Isolation & Bleed (DIB)

■ Fire-safe protection.

■ Low operating torque design

■ Anti-blowout stem design

What is Cast Steel Trunnion Mounted Ball Valve?

The cast steel trunnion mounted ball valve is a form of quarter-turn valve which uses a hollow, perforated and fixed/supported ball to control flow through it. The ball is con-strained by mounted bearings and is only allowed to rotate.

How does it work(sealing)?

The line pressure drives the upstream seat against the stationary ball so that the line pressure forces the upstream seat onto the ball causing it to seal. The mechanical anchoring of the ball absorbs the thrust from the line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure operating torque remains low.

Why choose LYV®️ valves?

We produce Flanged End Cast Steel Trunnion Mounted Ball Valve for over 30 years. The workshop covers 13000 square meters and own more than 50 advanced CNC machines. Our engineers & production team will make sure your order delivers with high-quality and fastest time. We also care about valve shipping. The valves will wrap by bubble pouches or paper to ensure the paint will not be damaged. We also fixed valve by plywood stick after we put valve into the box. The plywood case will be painted with necessary marking to make sure the valve will not be damaged during shipping.

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