Kokai cast steel gate valve have two Bonnet designs. One is the Bolted bonnet.class 150-1500Lb.It’s gasket has two design: metal piral and metal ring gasket. The other is pressure seal bonnet. class 600-2500Lb, it’s pressure seal has two types: metal and soft graphite with 316 thread. The end of cast steel gate valve: Butt welded end and flange.

Gate Valve Design construction and specifications

Kokai cast steel gate valve conform to API 600, API6D, API603, ANSI B16.34 and BS1414. Each is tested according to API598, API6D and Marking is per MSS-SP-25.

Construction as follows

Full Bore/Reduce bore
outside screw stem and rising Yoke
Detachable seat and Back-seat
Two piece self aligning packing gland
Bolted Bonnet/Pressure seal Bonnet

Bolted Bonnet Gate Valve Pressure Seal Gate Valve Plate Gate Valve

A. Anti-friction ball thrust bearing: reduces friction between mating parts to ensure smooth operation
B. Grub screw: secures toke nut in the bonnet
C. Grease nipple: supplies lubricant to the mating parts
Class 150-1500

OS&Y, Rising stem,Flexible Wedge
Bolted Bonnet, Threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M
A351 CF3, A351 CF3M, A351 CN7M

Standards compliance

Design and Manufacture: ANSI B16.34, API600 API6D, API603, Bs1414
Face to face(end to end): ANSI B16.10, API 6D
Flanged connection: 2″-24″ to ANSI B16.5, 22″, 26″-36″ to MSS-SP-44
to API 605 on Request
Test and inspection: API598, API 6D
Butt welded end: ANSI B16.5


Informasi Lebih Lanjut Dapat Menghubungi:

PT Kokai Indo Abadi
Pangeran Jayakarta 141 Blok 2/D16
Jakarta – Indonesia
e: sales@kokai.co.id
t: 62-21-6018181
f: 62-21-6007566


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