NPS 4" Fire Safe Double Block Bleed Valve ASTM A105

Dual Discharge Valve Double Block Ball Valve

Double block and bleed ball valve bore :4"~24"100~600mm

Double block and bleed ball valve pressure:150L B~2500LB 1 .6MPa~32MPa

Double block and bleed ball valve Technicalstandard:

Design standard:APl6D

Face To Face :ASME B16.10

End Flanges: ASME B16.5

Inspection and Test :API 598

Product Parameter:

DUAL DISCHARGE VALVE DOUBLE BLOCK

Double block and bleed ball valves are designed in order to replace the multiple valves connection complex forms in traditional pipeline.

Reduce the leakage in system to achieve quickly bleed ,close function. Double blocok and bleed ball valves maximum save installation space and Simpliflied installation program.

Cut down the pressure in piping system. Convenient instrument Cleaning maintenance and reduce the costs.

The valves are widely used in ectric power, petroleum chemial industy, metallurgy, Marine, oil, natural gas, coal gas, pharmaceutical and other industies hydraulic system pipeline.

Design Description

Full Port Design

Bolted Bonnet Split Body

Three Pieces Body

Trunnion Mounted Ball Typе

Bolw Out Proof Stem

Fire Safe Construction

Anti Statics Device

Stopper Device

ISO 5211 Mounting Pad
Flanged or Butt Welding End

Available With Lever

Company Introduction

Coosai a specialized valve manufacturer which has 30 years’ experience in the design and manufacturing of quality engineered valves.

Coosai has a sound organization structure, professional technical capacity, advanced manufacturing and testing equipment, rigorous quality control system and well trained service staff. There is a real technical proficiency at Coosai with an organization to produce and supply valves according to any specific requirements the customer may ask.

Coosai workshops cover an area of 12000 square meters. Total registered asset is RMB 80 million. Besides ISO9001:2008 quality management and QC system, Coosai has the capability in offering varied products by virtue of over 100 sets large scale CNC lathes, testing equipment and computerized control valve testing and calibration bench. Nondestructive testing equipment include PT,UT,MT and RT are available.

Coosai produces quality Ball Valve, Gate valve, Globe valve and Check Valve, Knife gate valve and Segment Ball Valve, Control valves and Butterfly Valves. Valve size from 1/2”—60”,pressure from 150LB-2500LB,temperature range from -196ºC to 610 ºC, connected with manual, pneumatic, electric, hydraulic operator etc.

Coosai valves are CE PED 97/23/EEC, API 6D-0749, API6A-1199,API607 (fire safe) and TS certified. Coosai is Tier One supplier for SINOPEC and CNPC.

Coosai is dedicated to offering the best configuration and satisfy client’s expectations and their eventual commitments.

We look forward to meeting all distinguished clients and industry experts and sincerely welcome all your valuable inquiries.