D-Line SeriesGroup 1 | Group 2 | Group 3THE RIGHT PUMP. THE RIGHT SOLUTION.

Group 2

Group 1

D-Line Series

Specifications• Manufactured to meet ANSI/

ASME B73.1 standard• Inpro bearing isolators• SKF or equal bearings• Standard, large and modified

seal chambers• External impeller adjustment• Multiple materials of construction

available (Carbon Steel, 316SS, CD4, Alloy 20, Hast B, Hast C)

• Reverse vane impeller design• 100% interchangeable with

Durco Mark III• Mark III Groups 1,2 & 3 models• Various shaft and shaft sleeve

combinations

Group 1 | Group 2 | Group 3

* Availability upon request.

PARTS LIST & MATERIALS OF CONSTRUCTION

ITEM NUMBER

PART NAMEMATERIAL

WCB 316SS CD4MCu ALLOY 20

110 Casing WCB CD4MCu Alloy 20 *111 Impeller DWCB CD4MCu Alloy 20 *112 Gasket, Impeller Teflon GTB113 Shaft-Less Sleeve (Optional) 316SS Alloy 20 *113 Shaft-With Sleeve SAE4140 Alloy 20 *114 Shaft Sleeve 316SS Alloy 20 *115 Plate, Rear Cover WCB CD4MCu Alloy 20 *116 Gasket, Rear Cover Teflon GMF121 Adapter, Bearing Housing (Gr. 2 & 3 Only) WCB 316SS CD4MCu Alloy 20 *122 Stud & Nut, Casing Grade 8 316SS Alloy 20 *211 Gland, Packing Optional WCB 316SS Alloy 20 *

210 Seal, Mechanical

212 Gasket, Gland

213 Stud, Gland Grade 8 316SS Alloy 20 *311 Foot, Bearing Housing WCB312 Screw, Foot C.S. 316SS313 Shim SS314 Locknut, Bearing C.S.315 Lockwasher, Bearing C.S.316 Bearing, Inboard C.S.317 Bearing, Outboard C.S.318 Key, Shaft/Coupling C.S.321 Oil Seal, (Outboard) Stainless Steel / Bronze322 Oil Seal, (Inboard) Stainless Steel / Bronze323 O-Ring Adapter, (Gr. 2 & 3 Only) NBR324 Sight Gauge, Bearing Housing WCB 316SS325 Drain Plug, Bearing Housing WCB 316SS326 Vent Plug, Bearing Housing WCB 316SS327 Capscrew, Adapter, (Gr. 2 & 3 Only) C.S.328 Housing, Bearing WCB331 Carrier, Bearing WCB

332 Retainer, Bearing Carrier C.S.

333 O-Ring, Bearing Carrier NBR334 Screw, Bearing Carrier C.S.335 Screw, Cover/Adapter C.S.336 Capscrew, Clamp, (Gr. 3 Only) C.S.337 Clamp Ring, Bearing Housing, (Gr. 3 Only) C.S.

CURFLO

F

U

Y

X

CP

V

O

D

E2

E1

H (Holes x 4)

PUMP SIZE DISCHARGE SUCTION CP D X O E1 E2 F U Y V min. H

Grou

p 1

1.5 x 1-62 1 1.5 17.5 5.25 6.5 11.75 6 0 7.25 0.875 4 2 0.625

1.5 x 1-82 1 1.5 17.5 5.25 6.5 11.75 6 0 7.25 0.875 4 2 0.625

3 x 1.5-62 1.5 3 17.5 5.25 6.5 11.75 6 0 7.25 0.875 4 2 0.625

3 x 1.5-82 2 3 17.5 7.00 7.5 11.75 6 0 7.25 0.875 4 2 0.625

3 x 2-62 2 3 17.5 5.25 6.5 14.50 6 0 7.25 0.875 4 2 0.625

Grou

p 2

3 x 2-8 2 3 23.5 8.25 9.5 17.75 9.75 7.25 12.5 1.125 4 2.625 0.625

4 x 3-8 3 4 23.5 8.25 11 19.25 9.75 7.25 12.5 1.125 4 2.625 0.625

2 x 1-10A 1 2 23.5 8.25 8.5 16.75 9.75 7.25 12.5 1.125 4 2.625 0.625

3 x 1.5-10A 1.5 3 23.5 8.25 8.5 16.75 9.75 7.25 12.5 1.125 4 2.625 0.625

3 x 2-10A 2 3 23.5 8.25 9.5 17.75 9.75 7.25 12.5 1.125 4 2.625 0.625

4 x 3-10 3 4 23.5 8.25 11 19.25 9.75 7.25 12.5 1.125 4 2.625 0.625

4 x 3-10H 3 4 23.5 10 12.5 22.5 9.75 7.25 12.5 1.125 4 2.625 0.625

6 x 4-10 4 6 23.5 10 13.5 23.5 9.75 7.25 12.5 1.125 4 2.625 0.625

6 x 4-10A 4 6 23.5 10 13.5 23.5 9.75 7.25 12.5 1.500 4 2.625 0.625

6 x 4-10H 4 6 23.5 10 13.5 23.5 9.75 7.25 12.5 1.500 4 2.625 0.625

3 x 1.5-13 1.5 3 23.5 10 10.5 20.5 9.75 7.25 12.5 1.125 4 2.625 0.625

3 x 2-13 2 3 23.5 10 11.5 21.5 9.75 7.25 12.5 1.125 4 2.625 0.625

4 x 3-13 3 4 23.5 10 12.5 22.5 9.75 7.25 12.5 1.125 4 2.625 0.625

6 x 4-13A 4 6 23.5 10 13.5 23.5 9.75 7.25 12.5 1.125 4 2.625 0.625

Grou

p 3

8 x 6-14A 6 8 33.875 14.5 16 30.5 16 9 18.75 2.375 6 4 0.875

10 x 8-14 8 10 33.875 14.5 18 32.5 16 9 18.75 2.375 6 4 0.875

6 x 4-16 4 6 33.875 14.5 16 30.5 16 9 18.75 2.375 6 4 0.875

8 x 6-16 6 8 33.875 14.5 18 32.5 16 9 18.75 2.375 6 4 0.875

8 x 6-16A 6 8 33.875 14.5 18 32.5 16 9 18.75 2.375 6 4 0.875

10 x 8-16 8 10 33.875 14.5 19 33.5 16 9 18.75 2.375 6 4 0.875

10 x 8-16H 8 10 33.875 14.5 19 33.5 16 9 18.75 2.375 6 4 0.875

D-Line Dimensional Drawing (Group 1/Group 2/Group 3)

Sales@CURFLO.com www.CURFLO.com

All dimensions are in inches.

PARTS LIST & MATERIALS OF CONSTRUCTION

ITEM NUMBER

PART NAMEMATERIAL

WCB 316SS CD4MCu ALLOY 20

110 Casing WCB CD4MCu Alloy 20 *111 Impeller DWCB CD4MCu Alloy 20 *112 Gasket, Impeller Teflon GTB113 Shaft-Less Sleeve (Optional) 316SS Alloy 20 *113 Shaft-With Sleeve SAE4140 Alloy 20 *114 Shaft Sleeve 316SS Alloy 20 *115 Plate, Rear Cover WCB CD4MCu Alloy 20 *116 Gasket, Rear Cover Teflon GMF121 Adapter, Bearing Housing (Gr. 2 & 3 Only) WCB 316SS CD4MCu Alloy 20 *122 Stud & Nut, Casing Grade 8 316SS Alloy 20 *211 Gland, Packing Optional WCB 316SS Alloy 20 *

210 Seal, Mechanical

212 Gasket, Gland

213 Stud, Gland Grade 8 316SS Alloy 20 *311 Foot, Bearing Housing WCB312 Screw, Foot C.S. 316SS313 Shim SS314 Locknut, Bearing C.S.315 Lockwasher, Bearing C.S.316 Bearing, Inboard C.S.317 Bearing, Outboard C.S.318 Key, Shaft/Coupling C.S.321 Oil Seal, (Outboard) Stainless Steel / Bronze322 Oil Seal, (Inboard) Stainless Steel / Bronze323 O-Ring Adapter, (Gr. 2 & 3 Only) NBR324 Sight Gauge, Bearing Housing WCB 316SS325 Drain Plug, Bearing Housing WCB 316SS326 Vent Plug, Bearing Housing WCB 316SS327 Capscrew, Adapter, (Gr. 2 & 3 Only) C.S.328 Housing, Bearing WCB331 Carrier, Bearing WCB

332 Retainer, Bearing Carrier C.S.

333 O-Ring, Bearing Carrier NBR334 Screw, Bearing Carrier C.S.335 Screw, Cover/Adapter C.S.336 Capscrew, Clamp, (Gr. 3 Only) C.S.337 Clamp Ring, Bearing Housing, (Gr. 3 Only) C.S.

D-Line Series

FLOW - 2900 RPM (50 Hz)20 40 60 80 100 120 150 200 250 300

0 100 200 300 400 500 600 800 1000 1200 1400

800

640

480

400

320

240

160

80

0

240

220

200

180

160

140

120

100

80

60

40

20

TDH

- 3

500

RP

M (6

0 H

z)

TDH

- 2900 RP

M (50 H

z)

FLOW - 3500 RPM (60 Hz)

FLOW - 1750 RPM (60 Hz)

380

300

240

200

160

120

80

40

0

TDH

- 1

750

RP

M (6

0 H

z)

90

80

70

60

50

40

30

20

10

FLOW - 1450 RPM (50 Hz)20 40 60 80 120 160 200 400 600 800 300 1200 1400 1600 1800

0 100 200 300 400 600 800 1000 1800 2800 3400 4200 5000 5800 6800 7400 8200

TDH

- 1450 RP

M (50 H

z)

AUTHORIZED DISTRUBUTOR

1113 Howard Avenue, Houston, TX 77536 281.479.5000 Sales@CURFLO.com www.CURFLO.com

Any reference to the O.E.M. model number or other O.E.M. information is for the purpose of identification only and does not imply that the part or pump was manufactured by the original equipment manufacturer.