SKU: SDC

Wafer Inline Single Disc Check Valve

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The SDC series of Check Valves is a 316 Stainless Steel In Line Wafer Single Disc check valve. Featuring a spring backed disc, this chekc valve is suitable for installation in any angle. The wafer design allows for this check valve to be fitted in various ANSI, DIN & Table Flanges (see dimensions tab for list of compatible flanges). Face to face in accordance with DIN3202-K4. This check valve is great for applications where a Metal to Metal seat is desired such as in steam systems. Please note the metal to metal seat will not form a bubble tight seal at low pressures. Suitable for pressures to 40 Bar and 220°C (refer to pressure temperature curve below).

Model Size (mm) Media Pressure Media Temperature Cracking Pressure (mBar) Cv
SDC-15 15 0 to 40 BAR -20°C to 220°C 23 5.1
SDC-20 20 0 to 40 BAR -20°C to 220°C 23 7.9
SDC-25 25 0 to 40 BAR -20°C to 220°C 23 11.7
SDC-32 32 0 to 40 BAR -20°C to 220°C 24 19.8
SDC-40 40 0 to 40 BAR -20°C to 220°C 25 30.3
SDC-50 50 0 to 40 BAR -20°C to 220°C 25 50.2
SDC-65 65 0 to 40 BAR -20°C to 220°C 26 87.5
SDC-80 80 0 to 40 BAR -20°C to 220°C 26 130.7
SDC-100 100 0 to 40 BAR -20°C to 220°C 27 200.7
SDC-125 125 0 to 40 BAR -20°C to 220°C 36 295.3
SDC-150 150 0 to 40 BAR -20°C to 220°C 36 421.3
SDC-200 200 0 to 40 BAR -20°C to 220°C 40 597.5

 

Stainless Steel In Line Check Valve Temperature vs Pressure 

Stainless Steel Single Disc Wafer Check Valve

DN Size d D D1 D2 L H kgs
15 1/2" 15 39 28.5 32 16 3 0.10
20 3/4" 20 46 36.2 40 19 3 0.14
25 1" 25 54 43.3 46 21 3 0.20
32 1-1/4" 32 70 56 60 27 3.5 0.36
40 1-1/2" 40 83 68.5 72 31 3.5 0.51
50 2" 49 96 80.5 84 40 4 0.78
65 2-1/2" 62 115 99 103 46 5 1.24
80 3" 75 135 117 123 50 5 1.92
100 4" 85 153 135 140 60 6 2.62

Stainless Steel Single Disc Check Valve 

DN Size d D D1 D2 L H W kgs
125 5" 118 187 160 177 90 18 6.8 5.5
150 6" 140 217 187 205 106 23 7.2 8.3
200 8" 185 267 240 261 140 32 8 16.1

All dimensions in mm unless shown otherwise. 

Suitable Flanges (Black will fit, Red will not), showing innner diameter of bolt hole

SDC Outer Diameter DIN ANSI AU
PN10 PN16 PN25 PN40 150Lb 300Lb Table D Table E
DN15 39 51 51 51 51 45.5 51.5 53 53
DN20 46 61 61 61 61 55 63.5 59 59
DN25 54 71 71 71 71 64.5 70 69 69
DN32 70 82 82 82 82 74 79.5 73 73
DN40 83 92 92 92 92 83.5 92.5 84 84
DN50 96 107 107 107 107 101.5 108 96 96
DN65 115 127 127 127 127 120.5 127 109 109
DN80 135 142 142 142 142 133.5* 146.5 128 128
DN100 153 162 162 168 168 171.5 178 160 160
DN125 187 192 192 194 194 194 213 192 192
DN150 217 218 218 224 224 219.5 248 217 213
DN200 274 273 273 284 290 276.5 305 274 270

*Bolts will fit on DN80 ANSI 150. Bolt hole size is 19mm and bolt size is 16mm

Stainless Steel Inline Single Disc Check Valve

Item Part Material QTY
1 Body CF8M 1
2 Spring Cover SS316 1
3 Spring SS316 1
4 Disc CF8M 1

Size 15mm to 200mm
Body 316 Stainless Steel
Seat Stainless Steel
Pressure Range 0 to 40 BAR
Temperature -20°Cto 220°C

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SDC

Wafer Inline Single Disc Check Valve

Features:

Size 15mm to 200mm
Body 316 Stainless Steel
Seat Stainless Steel
Pressure Range 0 to 40 BAR
Temperature -20°Cto 220°C

Description:

The SDC series of Check Valves is a 316 Stainless Steel In Line Wafer Single Disc check valve. Featuring a spring backed disc, this chekc valve is suitable for installation in any angle. The wafer design allows for this check valve to be fitted in various ANSI, DIN & Table Flanges (see dimensions tab for list of compatible flanges). Face to face in accordance with DIN3202-K4. This check valve is great for applications where a Metal to Metal seat is desired such as in steam systems. Please note the metal to metal seat will not form a bubble tight seal at low pressures. Suitable for pressures to 40 Bar and 220°C (refer to pressure temperature curve below).

Model Size (mm) Media Pressure Media Temperature Cracking Pressure (mBar) Cv
SDC-15 15 0 to 40 BAR -20°C to 220°C 23 5.1
SDC-20 20 0 to 40 BAR -20°C to 220°C 23 7.9
SDC-25 25 0 to 40 BAR -20°C to 220°C 23 11.7
SDC-32 32 0 to 40 BAR -20°C to 220°C 24 19.8
SDC-40 40 0 to 40 BAR -20°C to 220°C 25 30.3
SDC-50 50 0 to 40 BAR -20°C to 220°C 25 50.2
SDC-65 65 0 to 40 BAR -20°C to 220°C 26 87.5
SDC-80 80 0 to 40 BAR -20°C to 220°C 26 130.7
SDC-100 100 0 to 40 BAR -20°C to 220°C 27 200.7
SDC-125 125 0 to 40 BAR -20°C to 220°C 36 295.3
SDC-150 150 0 to 40 BAR -20°C to 220°C 36 421.3
SDC-200 200 0 to 40 BAR -20°C to 220°C 40 597.5

 

Stainless Steel In Line Check Valve Temperature vs Pressure 

.

Wafer Inline Single Disc Check Valve

SDC

Dimensions:

Stainless Steel Single Disc Wafer Check Valve

DN Size d D D1 D2 L H kgs
15 1/2" 15 39 28.5 32 16 3 0.10
20 3/4" 20 46 36.2 40 19 3 0.14
25 1" 25 54 43.3 46 21 3 0.20
32 1-1/4" 32 70 56 60 27 3.5 0.36
40 1-1/2" 40 83 68.5 72 31 3.5 0.51
50 2" 49 96 80.5 84 40 4 0.78
65 2-1/2" 62 115 99 103 46 5 1.24
80 3" 75 135 117 123 50 5 1.92
100 4" 85 153 135 140 60 6 2.62

Stainless Steel Single Disc Check Valve 

DN Size d D D1 D2 L H W kgs
125 5" 118 187 160 177 90 18 6.8 5.5
150 6" 140 217 187 205 106 23 7.2 8.3
200 8" 185 267 240 261 140 32 8 16.1

All dimensions in mm unless shown otherwise. 

Suitable Flanges (Black will fit, Red will not), showing innner diameter of bolt hole

SDC Outer Diameter DIN ANSI AU
PN10 PN16 PN25 PN40 150Lb 300Lb Table D Table E
DN15 39 51 51 51 51 45.5 51.5 53 53
DN20 46 61 61 61 61 55 63.5 59 59
DN25 54 71 71 71 71 64.5 70 69 69
DN32 70 82 82 82 82 74 79.5 73 73
DN40 83 92 92 92 92 83.5 92.5 84 84
DN50 96 107 107 107 107 101.5 108 96 96
DN65 115 127 127 127 127 120.5 127 109 109
DN80 135 142 142 142 142 133.5* 146.5 128 128
DN100 153 162 162 168 168 171.5 178 160 160
DN125 187 192 192 194 194 194 213 192 192
DN150 217 218 218 224 224 219.5 248 217 213
DN200 274 273 273 284 290 276.5 305 274 270

*Bolts will fit on DN80 ANSI 150. Bolt hole size is 19mm and bolt size is 16mm

.

Wafer Inline Single Disc Check Valve

SDC

Construction:

Stainless Steel Inline Single Disc Check Valve

Item Part Material QTY
1 Body CF8M 1
2 Spring Cover SS316 1
3 Spring SS316 1
4 Disc CF8M 1

WARNING

These products are intended for use in industrial applications only. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’ and in our individual ‘Series’ data sheets. Before using these products with fluids other than these specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult Hawleys Through misuse, age, or malfunction, components used in industrial valve applications can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in industrial valve applications and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to the user in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings or specifications found in instruction sheets or labels packed or attached and shipped with the products. Our policy is one of continuous research and development. We therefore reserve the right to amend without notice the specifications given in this document or our individual ‘Series’ data sheets.

WARRANTY INFORMATION

All valve series and other products manufactured or distributed by Hawleys are warranted by Hawleys to be free of defects in material and workmanship for a period of 1 year from the date of purchase or as the manufacturer warrants. Hawleys obligation under this warranty is limited to repair or replacement of the defec1ive product or refund of the purchase price paid solely at the discretion of Hawleys and provided such defective product is returned to Hawleys freight prepaid and upon examination by Hawleys such product is found defective. This warranty shall be void in the event that the product has been subject to misuse, misapplication, improper maintenance, modification or tampering. This warranty is expressed in lieu of all other warranties, expressed or implied from Hawleys representatives or employees. Hawleys reserves the right to change Valve and Brochure specifications without notice.