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Ductile Iron GGG50 Sliding Multi Ball Check Valve Big Size DN400 DN500

Ductile Iron GGG50 Sliding Multi Ball Check Valve Big Size DN400 DN500

Check Valve - Ball type (nonreturn valve) was the first valves at with a unique design. A very simple but robust design with no critical mechanism involved. All parts like hinge pin disc mechanism used in conventional valve are eliminated, and has put in a reinforced rubber coated ball to arrest flow media in return condition. This ball, moves totally out of the flow path when the pumping is on to give minimum head losses. The spherical rubber coated ball seals perfectly on the rounded valve seat ensuring a totally leak proof sealing. This design offers other advantages like non clogging & self cleaning. In this virtually maintenance free valves, if required, after prolonged usage, the on-line replacement of the ball is just a minute job. * Lower power consumption * Larger solid handling capacity * Self cleaning, Non-Clogging * Low pressure drop * Perfect Sealing
Product Details

Overview

Flanged Ball Check Valve uses the rubber covered roller as the disc, when, under the action of the medium, can roll up and down along with the integral sliding path inside the valve so as to open or close it. And it features by good tightness, silent close and no production of water hammer.

The body is full waterflow path design, big flow, small resistance and the water head loss is smaller that of the swing type by 50. It is mountable vertically or horizontally and can be used for cold water, hot water, industrial and living sludge pipe networks, especially suitable for the submersible sludge pump.


Description  

Technical   Parameters

Model

PN(MPa)

Casting test   pressure(MPa)

Seal test  pressure (MPa)

Materials   of body, bonnet

HQ44X-10

1

1.5

1.1

iron or   steel

HQ414-16

1.6

2.4

1.76

Mail part   & material

Body :   Cast iron, ductile cast iron ,WCB

Bonnet :   Cast iron, ductile cast iron, WCB

Ball :   cast steel coated with neoprene

Medium :   water and weak corrosive fluid

Part  Materials  List 

Part

Description

Standard

Special

1.

Body

Cast Iron

St. Steel, Cast Steel

2.

Cover

Cast Iron

St. Steel, Cast Steel

3.

Ball

Nitrile Reinforced

EPDM, Neoprene

4.

Cover Ring

Nitrile Rubber

Butyle, Viton

5.

Ball Seat Ring

L. T. Bronze

St. Steel, Hard Rub.

6.

Fasteners

Carbon Steel

St. Steel


 

Principle:

The heart of this valve is a reinforced rubber ball. The unique design of the valve allows free movement of the ball.

The ball moves to open position when the pump starts & allows free flow of liquid without any interference (See Fig.).

As the pump stops, the ball seats firmly against the metal seat due to its own weight & back pressure of the liquid (Mouse over fig.). This results in DROPLESS sealing.

 



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