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PPH WAFER CHECK VALVE

PPH WAFER CHECK VALVE

PPH Wafer Check Valve Manufacturer in India. As a safety filter, the sediment sieve is meant to capture any solid contaminants that may sometimes be in the line. We export valves and other equipment with small holes, such as pumps or control valves, protected by it. The filter screen is easily replaceable and available in a variety of meshes.

An oscillating disc is used to open or close the valve. As a result of their design, they can be installed in extremely tight spaces where a flanged check valve would be ineffective. As the disc opens, the PPH wafer check valve has a molded body surrounding the opening.

In contrast, PPH wafer check valves have a molded body that enables the disc to fully open, enabling full flow.

In the case of applications that demand full flow, this is an important consideration, as you can see. Therefore, wafer check valves are used in situations where flow is not a concern. Swing checks are used in applications where a full port valve is required.

The CR wafer check valve is designed to be installed directly between stubs and flanges in accordance with ISO/DIN standards.

• Installed with FIP QPV (d50 – d160) stubs and QRV stubs using flat gasket
QHV/Y (d225 – d315), on PVC piping class PN10 or lower with type ODV
flanges

• Metal support for easy and precise centring of the valve during installa-
tion

• Can be installed in either a vertical or horizontal position
• Sealing system with O-ring for optimum sealing and installation without
flat gaskets

Technical specifications
Construction Wafer check valve
Size range DN 40 ÷ 300
Nominal pressure 5 bar with water at 20 °C
Temperature range 0 °C ÷ 60 °C
Coupling standards Flanging system: DIN 2501 PN 10, EN ISO 1452,EN
ISO 15493
Reference standards Construction criteria: EN ISO 16137 EN ISO 1452, EN
ISO 15493
Test methods and requirements: ISO 9393
Installation criteria: DVS 2204, DVS 2221, UNI 11242
Valve material PVC-U
Seal material EPDM

WAFER CHECK VALVE

PRESSURE VARIATION ACCORDING TO TEMPERATURE

For water e non-hazardous fluids with regard to which the material is classified as CHEMICALLY RESIS-TANT. In other cases, a reduction of the nominal pressure PN is required (25 years with safety factor).


PRESSURE DROP GRAPH


KV 100 FLOW COEFFICIENT

The Kv 100 flow coefficient is the Q flow rate of litres per minute of water at a temperature of 20°C that will generate Δp= 1 bar pressure drop at a certain valve position. The Kv100 values shown in the table are calculated with the valve completely
open.

DN 40 50 65 80 100 125 150 200 250 300
Kv100l/min 370 900 1250 1867 2867 5700 8167 18800 25000 31900

MINIMUM PRESSURE REQUIRED TO OPEN THE VALVE IN A VERTICAL FLOW

DN 40 50 65 80 100 125 150 200 250 300
bar 0,002 0,003 0,003 0,003 0,003 0,003 0,005 0,005 0,008 0,008

MINIMUM VALVE SEALING PRESSURES

DN 40 50 65 80 100 125 150 200 250 300
bar 0,3 0,3 0,3 0,2 0,2 0,2 0,2 0,2 0,2 0,2

TIGHTENING TORQUE

*Tightening torques for nuts and bolts on couplings with backing rings. Values required to obtain the hydraulic test seal (1.5 x PN at 20°C) (new or lubricated nuts and bolts)

DN 40 50 65 80 100 125 150 200 250 300
Nm* 8 10 10 10 0 15 20 38 45 50

CROV

Wafer check valve in PVC-U/EPDM

d DN A B C ISO/DIN Di OP Z g *MOP(bar) Code
50 40 72 25 28 95 22 0-5 16 160 6 CROV050E
63 50 86 37 29 109 32 0-5 20 260 6 CROV063E
75 65 105 50 31 129 40 0-5 20 330 6 CROV075E
90 80 119 61 32 144 54 0-5 20 400 6 CROV090E
110 100 146 77 31 164 70 0-5 22 560 6 CROV110E
140 125 173 94 35 195 92 0-5 23 760 6 CROV140E
160 150 197 100 40 220 105 0-5 25 1120 6 CROV160E
225 200 255 152 38 275 154 0-5 35 2130 6 CROV225E
280 250 312 180 41 330 192 0-5 40 3540 6 CROV280E
315 300 363 215 41 380 227 0-5 45 5350 6 CROV315E

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