DIAPHRAGM VALVES GATE VALVES NON RETURN VALVES

DIAPHRAGMS

INTRODUCTION

Klep Valves has been in operation since 1983 and specialises in a comprehensive range of diaphragm, gate and non-return valves. The company operates in the mining and industrial sectors, where valves conforming to international quality standards are supplied to a broad customer base. The culmination of extensive experience and a growing market have resulted in a product that is not only efficient, robust and reliable, but also manufactured wholly in South Africa. Klep Valves manufacture the full range of Diaphragm Valves both W.O. (Weir Orifice) and S.O. (Straight Orifice) Type. The Bodies and Bonnets are made from High Grade Cast Iron and are suitable for lining with various Rubber Compounds as well as Halar. The size range being 15mm to 350mm. Diaphragms are moulded in house and cover the full spectrum of materials to be handled. Klep Diaphragm Valves are wholly manufactured in South Africa. We also manufacture a range of Gate Valves from 80mm to 400mm in both All Iron and Gun Metal trim, in various face to face dimensions, as used by the mining and general industry. Our Clack Type Non-Return Valves range from 80mm to 200mm.

STRAIGHT ORIFICE DIAPHRAGHM

VALVES

DESIGN Careful design and the use of quality materials assures a long useful life of the KLEP DIAPHRAGM VALVE. The straight-through type passage of the Type "SO" valves ensures minimum restriction when the valve is open, thus giving maximum flow to even the densest fluids. There are two body alternatives available. They are straight screwed bodies from 25 mm (1") to 80 mm (3") or straight flanged bodies from 25 mm (1") to 350 mm (14"). Flanges are drilled to customer requirements. A choice of hand wheel or chain wheel operated valves (with or without guides) is available. The diaphragm, which is made from raw materials to suit the fluids handled, completely isolates the bonnet assembly from the body of the valve, thus ensuring protection of the compressor and spindle from being damaged by abrasive and corrosive fluids.

Nominal Bore

A B C Safe

Working Pressure

mm mm mm mm kPa

25 83 121 127 700

32 83 121 146 700

40 83 121 159 700

50 140 181 191 700

65 165 200 216 700

80 197 245 254 700

100 254 267 305 700

125 311 305 356 600

150 311 375 406 350

200 368 410 521 350

250 483 559 635 350

300 585 635 749 350

350 699 664 980 175

Working pressure increased with ball thrust (Optional)

All with standard ball thrust

PERFORMANCE AND APPLICATIONS The excellent flow characteristics achieved with the KLEP "SO" DIAPHRAGM VALVE ensures trouble-free performance even when handling thicker fluids, such as sludge and slurries. This proven system of controlling fluids together with a robust and simple construction makes for minimum maintenance downtime. Designed for easy maintenance, the entire bonnet/diaphragm assembly can be withdrawn by simply loosening the bonnet nuts, thus leaving the valve body and pipe work in place. The KLEP DIAPHRAGM TYPE "SO" VALVE has a wide range of applications in industry. They can vary from acids to foodstuffs, antibiotics to effluents and commercial vacuum duties. All KLEP DIAPHRAGM VALVE parts are independently manufactured and are interchangeable with other types of diaphragm valves.

SERVICE AND QUALITY CONTROL All KLEP DIAPHRAGM VALVE parts are manufactured to the highest standards and our trained technical staffs are available to assist in the selection of the correct valve for a specific application. For maximum working pressures please contact our technical department.

CONSTRUCTION

The KLEP TYPE "SO" DIAPHRAGM VALVE consists of seven simple units; body, bonnet assembly and diaphragm. The BODY is made in a variety of materials, to match many different fluids. The streamlined fluid passage lends itself to lining with various lining materials including HALAR. The BONNET ASSEMBLY consists of the bonnet shell, containing the operating mechanism made up of spindle, spindle nut and compressor. The DIAPHRAGM is molded with reinforced, flexible material and is attached to the compressor to give positive lift. KLEP DIAPHRAGM VALVES are efficient, robust and reliable and they are WHOLLY MANUFACTURED IN SOUTH AFRICA.

FEATURES 1. Straight-through passage. 2. Robust construction. 3. Minimal resistance to flow. 4. Positive isolation of valve mechanism. 5. Easy maintenance. 6. Excellent leak-tightness.

ADVANTAGES 1. 100% SA. Manufacture. 2. Easy interchange ability of parts. 3. Sure closure. 4. Long life. 5. Glandless construction.

HANDLE TYPES

Standard type

Rising Spindle Type

WEIR ORIFICE DIAPHRAGM

VALVES

DESIGN The simple functional construction of the KLEP DIAPHRAGM VALVE makes maintenance and pipeline inspection easy. A long useful life is assured by careful design and use of quality materials. There are two body alternatives available. They are straight screwed bodies from 15 mm (1/2") to 80 mm (3") or straight flanged bodies from 15 mm (1/2") to 350 mm (14"). Flanges are drilled to customer’s requirements. A choice of hand wheel or chain wheel operated valves (with or without guides) is available. The diaphragm, which is made from raw materials to suit the fluids handled, isolates the moving mechanism from the fluids, thus ensuring protection of the compressor and spindle from being damaged by abrasive and corrosive fluids.

Nominal Bore

A B C Safe

Working Pressure

mm mm mm mm kPa

15 57 76 102 1600

20 70 89 118 1600

25 83 95 127 1600

32 95 95 146 1200

40 114 143 159 1200

50 140 168 191 1000

65 165 200 216 1000

80 197 219 254 1000

100 254 273 305 850

125 311 321 356 700

150 368 365 406 500

200 483 498 521 500

250 584 584 635 500

300 699 679 749 400

350 699 889 749 350

Working pressure

increased with ball thrust

All with standard ball thrust

PERFORMANCE AND APPLICATIONS

The KLEP DIAPHRAGM VALVE has an application in almost every industry. This proven system of controlling fluids together with high performance and trouble-free use in continuous application ensures minimum maintenance downtime. Designed for easy maintenance, the entire bonnet/diaphragm assembly can be withdrawn by simply loosening the bonnet nuts, thus leaving the valve body and pipe work in place. All KLEP DIAPHRAGM VALVE parts are independently manufactured and are interchangeable with other types of diaphragm valves.

SERVICE AND QUALITY CONTROL All KLEP DIAPHRAGM VALVE parts are manufactured to the highest standards and our quality control department ensures that all valves are pressure tested for leaks and leave our factory in good working order. For maximum working pressures consult our technical department.

CONSTRUCTION

The KLEP DIAPHRAGM VALVE consists of seven units. The BODY is made of high grade cast iron and can be lined with various lining materials including HALAR. The BONNET ASSEMBLY consists of the bonnet shell, spindle, spindle nut, compressor and hand wheel. The DIAPHRAGM is molded with reinforced, flexible material and can be made from a wide range of base materials for different applications. KLEP DIAPHRAGM VALVES are efficient, robust, and reliable and are WHOLLY MANUFACTURED IN SOUTH AFRICA.

FEATURES Flexible, reinforced diaphragm. Operating mechanism protected from corrosion. Compressor ensures tight closure. Robust construction. Positive isolation of valve mechanism. Streamlined fluid flow. Parts are interchangeable.

ADVANTAGES 100% SA. Manufacture. Leak proof. Low flow resistance. Long life. Easy maintenance. Sure closure.

HANDLE TYPES

Standard Type Rising Spindle Type

GATE VALVES & NON RETURN VALVES

DESIGN The Klep gate valve employs the wedge gate design system with seat and gate rings being available in both bronze and all-iron fitted form. The valves are available in sizes from 80mm (3") to 400mm (16"). The body and cover is oval in shape and the guides in the body and gate are extra long for positive support throughout its upward and downward travel. The bolts on the gland housing are easily accessible for removal to enable quick repacking of the gland. Hand wheel, yoke, stuffing box, gate and body are cast from BS 1452 Grade 14 cast iron. Gunmetal trim is available if required. Flanges will be drilled to customer's requirements.

Size Face to Face Dimensions in mm

Nominal Bore in

mm

Medium Duty

Light Duty

Special Non-

Return

80 mm 210 159 203 308

100 mm 216 171 229 355

150 mm 240 210 267 445

200 mm 267 241 292 535

250 mm 292 273 330

300 mm 305 305 356

350 mm 470 470

400 mm 470 470

Non-Return valve cut-out

PERFORMANCE AND APPLICATION The Klep medium duty general purpose gate valves are highly suitable for various applications in the mining and general industry, in agriculture, in the fishing industry and for general marine applications. This proven system of controlling a wide variety of liquids and fluids together with its trouble-free performance in continuous use applications ensures minimum maintenance and downtime.

CONSTRUCTION The Klep gate valve is available with an external spindle and is manufactured and assembled to the highest international quality standards. Klep gate valves are manufactured entirely in South Africa from quality materials using our own techniques and expertise.

Non-Return valve

Gate Valve

ABOUT REFLUX VALVES Reflux valves are mechanical valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve closed. The mechanics of Reflux valve operation are not complicated. These single disc swing valves are designed with the closure element attached to the top of the cap. The closure element can be pushed aside by the flow, but swings back into the close position upon flow reversal. These valves may be installed vertically or horizontally. These valves are so designed that they offer minimum resistance to flow, which results in minimum frictional losses, thus reducing energy consumption. The body of the valve is designed to withstand the maximum expected working pressure and as well as water hammer effects.

VALVE DIAPHRAGMS

DESIGN Klep manufactures a comprehensive range of flexible diaphragms for type WO and SO valves to the highest international quality standards. Klep diaphragms are manufactured entirely in South Africa, using our own techniques and expertise. The diaphragms are molded with reinforced flexible materials from natural and synthetic rubber compounds and are made in sizes from 15 mm to 350 mm.

DIAPHRAGM TYPES

Straight Orifice type

Weir Orifice Type

GRADES AND APPLICATIONS

GRADES MATERIAL SERVICE

NA

NAX

Natural Rubber

Reinforced

Natural Rubber

Abrasive powders, slurries, water purification, inorganic soils, clean compressed air, etc. Temperature: -35°C to +100°C. Type WO and Type SO diaphragms.

NI

Nitrile

Mineral, animal and vegetable oils, fats, paraffin, kerosene, fuel oils. Temperature: -10°C to +100°C. Type WO and Type SO diaphragms.

BY

Hi grade Butyl

Severe acid and alkali conditions, sulphuric acid (up to 80% concentration at ambient temperatures), hot water services and applications involving steam sterilisation. Temperature: -25°C to +130°C. Type WO and Type SO diaphragms.

NE

Neoprene

Compressed air, most gases, animal, vegetable fatty oils and greases. Temperature: -5°C to +100°C. Type WO and Type SO diaphragms.

HY

Hypalon

Good acid-ozone resistance plus certain chlorine services.

PB

P.T.F.E./300

Highest chemical resistance to all fluids, except alkali metals, suitable for chlorine. Type WO only.

JUM

Natural Gum

Rubber

Abrasive Powders, Slurries under harsh conditions. Capable of higher pressures. Type WO and Type SO diaphragms.