Pneumatic Actuator Bonnet Knife Gate Valve,Lug Type/Wafer Type

Application:

Pulp and Paper/ Mining /Waste Water Treatment/ Food and Beverage/Chemical Plants/ PowerPlants/ Steel Industry/Etc.

Description

This knife gate valve is a unidirectional knife gate valve with bonnet.The completely enclosed body-bonnet structure ensures 0 leakage from the knife gate to surrounding.This valve is very suitable to contaminated/hazardous media for the safety of surrounding.

Technical Data

Sizes: Seat Material:

DN 100 to DN 600 Resiliant: PTFE/RPTFE/PEEK/

(larger diameters on request) DEVLON/NYLON

Pressure Rating: Metal:

DN 100 to DN250,10 Bar NPS 2-10,150 psi Tungsten Carbide/Satellite/Ni60

DN 300 to DN450 ,7 Bar NPS 12-18,90 psi Certificate: CE, ISO9001

DN 500 to DN600, 4 Bar NPS 20-24,60 psi Accredited

Design Feature

BODY:

· Cast-in guide claws at the port bottom for gate fixture, instead of a groove, eliminates potential valve shutoff clogging while providing tighter seal. The guide claws also push gate to seat for tight seal in closed position.

· Integral body design ensures easy assembly and 0 shell leakage.

· Full port design minimizes pressure drop and maximize flow capacity.

· PTFE resilient points against gate eliminate metal-metal contact between gate and bo dy.

GATE:

· Beveled knife edge provides strong cutting stress and tight sealing.

· Gate thickness can be increased to meet higher pressure.

· Gate surface is well polished at both sides for tight seal and less jamming.

· Gate is hard chrome coated for metal sealing valve.

SEAT:

· Side-entry seat is replaceable, reducing the cost of maintenance.

· L-shape seat retainer locks seat into valve body and covers seat side to prevent direct flow flushing.

STEM:

· Stem cover is available to ensure long service life for stem.

· Two thrust bearings minimizes torque for operation.

· Grease nipple is available to ease bearing lubrication.

Actuator :

Hand wheel, Electric ,Bevel Gear ,

Pneumatic (single & double-acting),Chain wheel ,

Hydraulic

Standard flange connection:

EN1092 GB/T 9113

ASME B16.5 AS 2129/4087

JIS B2220 Others on request

Feature

This type of knife gate valve is a unidirectional knife gate valve with bonnet. The completely enclosed body-bonnet structure ensures 0 leakage from the knife gate to surrounding. This valve is very suitable to contaminated/hazardous media for the safety of surrounding.

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.