Double Isolation & Bleed Ball Valve Side Entry

Features:

1. Cast Type with 2 Pcs Split Body Deisgn or Forged Type with 3 PCS Body Design,
Cast Material: WCB, CF8, CF8M, CF8C, Duplex Stainless Steel, etc.
Forged Material: A105, F304, F316, F317, F347, F11, F51, F59, ETC.
Other Materials available upon Request, available in Various Trim and Seat (Resilient and Metal) Materials To Suit Different Service Conditions.

2. Available Operation:
Normal Handle or Lockable Handle Operated,
Gear Operated,
Pneuamtic Operated,
Electric Operated or Hydraulic Operated.

2. Available Pressure Rating:
CL150, CL300, CL600, CL900, CL1500, CL2500

3. Available Size Ranges: 1/2" - 18"

4. Application Standards
Design Standard: API 6D
Flange Dimension to ANSI B16.5
Face to Face Dimension to ANSI B16.10
Pre-temp. Rating of Ball Valve to ASME B16.34
Wall Thickness to ASME B16.34
Fire Safe of Ball Valve Design to API 6FA/API 607
Inspect & Test: API 6D / API598
Valve Marking of Ball Valve: MSS- SP-25
To MR-01-75 On Request

Description
Three pieces body. Valve is designed in accordance with the requirements of API 6D for pipeline service. Anti-static and anti blow-out stem design. Seat design gives perfect tighness and is available as either self-relieving type or double piston effect type. Disign minimizes friction leading to low operating torque. Available as double block and bleed execution,which allows for venting and draining of ling fluid from the body cavity. Avaiable Full and Reduced bore. Ball valves firesafe tested according to BS EN 12266-2,API 6FA and API 607. Electric,pneumatic and hydravlic actuators are available on customer's requirement.

General Introduction
Trunnion mounted ball valves are designed in accordance with API 6D for classes ASME Class 150, 300, 600, 900, 1500, and 2500.Tow-piece split body cast steel and Three-piece forged steel side entry design bolted connections between body and closure, trunnion bolted connection, body thickness comply with ANSI B16.34.Seat ring is floating type, spring loaded to assure the contact with ball in order to provide an effective tight seal even at low differential pressure between cavity and downstream closure.Standard design is soft seated. A different soft seat materials are available based on the customer working condition.Available in Full and Reduced Bore.Electrical, pneumatic and hydraulic actuators are available based on customer requirement.Body Joint Construction

Three pieces body end entry design, graphite ring or o-ring viton (or request) seal ensure absolute seal integrity. The bolted body designs include a tight tolerance overlapping metal fit between the body and the adapter to minimize any possibility of movement due to pipeline stress. High temperature spiral wound stainless steel/ grafoil filled gasket is used for absolute seal.
Body and adaptors are dimensioned for metal contact to ensure correct gasket crush.

Main Material

Fire safe design

Ball valves ensures 100% pass of the fire safe test. As Ball valve applies two sealed design via O-ring seals and metal graphite spiral wound gasket. When the valve is on fire, non-metallic materials such as PTFE seat seals, gaskets ,O-ring seals,rubber etc will be damaged, meanwhile the outer layer of metal graphite spiral wound gasket provides a secondary seal. When the soft seat is burned, metal seat will automatically form a metal seal with ball under the urging of the spring which will effectively control the internal leakage and external leakage. Valve design fully accords with API 607, API 6FA, BS 6755, JB / T 6899 and other standards,

Blow-out proof stem:

The stem is made separately from the ball with integral T-type round shoulder, retained by bland .(other designs are Available on request)

Anti-static device:

Spring plus graphite type anti-static device are applied between the ball ,stem, gland Flange and body to keep the electrical Continuity between all the metallic components . And ensure the resistance lower than the most severe service requirement.

Grease injection device

For DN150 (NPS 6) & larger the stem and the valve seat are provided with a sealing grease injection device, For DN125 & smaller, we can provide the sealing grease injection device according to customer requirements. When the O-ring is damaged by accident, by injected sealant sealed to prevent the media through the valve seat ring and stem leaks.

Sealing Options

Soft seat: Metal to Metal O-Ring seal

Simple structure reliable sealing Applicable to particulate Reliable sealing low torque meet customers' high

wide application low cost. media conditions sealing reliability and low torque requirements

DOUBLE BLOCK & BLEED (DBB)

When the ball is in the closed position, each seat seals off the process medium independently at the same time between the up/down stream and body cavity, it allows bleeding the trapped cavity pressure (DBB) through drain and vent valve. The double block and bleed function make it possible to flush the valve under pressure and verify that the seat are sealing properly.

DOUBLE ISOLATION & BLEED (DIB)

Double piston effect seat, medium pressure, both upstream and downstream as well as in the body cavity, creates a resultant thrust that pushes the seat ring against the ball, valve with double piston effect seat rings require a cavity pressure relief to reduce the build-up of over pressure in the body cavity.

The ball is fixed by trunnion and stem for size 4” &smaller. Trunnion plate support for size 6” & larger

Beijing Silk Road Enterprise Management Services Co.,LTD. is a professional manufacturer of Trunnion Mounted Ball Valve, Pneumatic Actuated Ball Valve, Flange End Ball Valve and Soft Seated Ball Valve.