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5-5/8(14.3)
21-3/16(53.8)
2-1/8(5.4)
15 (38.1)
4-3/4(12.1)
14-1/2 (36.8)
5-1/2(14.1)
13-7/16(34.1)
4 (10.2) 2-9/16 (6.5)
35-5/8(90.5)
42-7/8(108.9)
46(116.8)
31-3/8(79.7)
8-1/4(21)
1 (2.5)
5-3/8(13.7)
5-3/8(13.7)
Adjustable head
1st stageoutlet
(2" weldflange)
1st stage inlet(2" weld flange)
1st stageinlet
(2" weldflange)
2nd stage outlet(2" weld flange)
Suction valveunloaders(optional)
1/4” NPTdrain
Crankcaseoil heater(optional) Four 9/16 (1.4)
diameterholes
20(50.8)
Appendix C—Outline dimensionsmodel d791 (two stage) bare Compressor with flywheel
Inches (Centimeters)
C. Outline dimensions
24
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Suctionvalve unloaders
(optional)
Inlet(2" weldflange)
9-16" (1.4)Hole Diameter
Inletpressureguage
Outletpressuregauge
Outlet(2" weldflange)
Crankcase heater(optional)
2-1/8"(5.3)
8-1/4"(20.9)
35-5/8"(90.4)
43-1/4"(109.9)
Inlet(2" weldflange)
1/4" NPT drain
24-15/32"(62.1)
21.2"(53.8)
5-5/8"(14.3)
13-1/4"(33.6)
4-3/4"(12.0)
1"(2.5)
5-1/2"(13.9)
5-3/8"(13.6)
10-1/4"(26.0)
5-3/8"(13.6)
5-1/2"(13.9)
5-1/2"(13.9)
Appendix C—Outline dimensionsmodel d891 (single stage) bare with flywheel
Inches (Centimeters)
25
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Inlet(2 ″ w
eld flange)
Inlet(2″ w
eld flange)
Outlet
(2″ weld flange)
Appendix C—Outline dimensionsmodel d891 (single stage) with 103 mounting
Inches (Centim
eters)
26
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Appendix C—Outline dimensionsmodel d891 (single stage) with 107b mounting
Inches (Centim
eters)
27
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CORKENCORKEN
FLOW
CORKEN
72(182.88)
41-21/32(105.81)
9-3/32(23.07)
7-1/16(17.96)
24(60.96)
3-21/32(9.31)
3-23/32(9.45)
6-1/2(16.49)
3/4(1.91)
45(114.30)
63(160.02)
30-5/64(76.41)
22-1/2(57.15)
Low oil
pressure switch
(optional)
Drain valve1" N
PT
Inletpressure
gauge
Outlet 2" w
eld flange
Electric m
otor driver
Outlet pressure gauge
Suction valve
unloaders (optional)
Inlet2" 300# R
Fw
eld neck flange
Relief valve
2" NP
T pipe away
High liquid level
shutdown sw
itch1/2" N
PT
High liquid level
alarm sw
itch1/2" N
PT
Crankcase
oil drain
Belt guard
Crankcaseheater
(optional)
Adjustable driver
slide baseU
seeight 3/4"
anchorbolts
5-15/16(15.09)
10-11/16(27.15)
28-15/16(73.51)
34-15/16(88.75)
40-15/16(103.99)
68(172.72)
12-1/2(31.75)
5-1/2(13.92)
79-13/32(201.69)
9/16(1.43) 9/16
(1.43)
27(68.58)
Appendix C—Outline dimensionsmodel d891 (single stage) with 109b mounting
Inches (Centim
eters)
28
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2-9/16 (7)
1 (3)
5-3/8(14)
Four 9/16″ (1.4)diameter holes
21-3/16(54)
20 (51)
5-5/8(14)
2-1/8 (5) 13-3/4 (35)
15 (38)
4-3/4(12)
5-1/2 (14)
14-1/2 (37)
43-5/8(111)
50-7/8(129)
54(137)
Crankcaseoil heater(optional)
39-3/8(100)
1/4″ NPTupper
distancepiece
Suction valveunloaders(optional)
4 (10)
8-1/4(21)
1/4″ NPTlower
distancepiece
1st stageoutlet (2″
weld flange)
1st stageinlet (2″
weld flange)
1st stageinlet (2″
weld flange)
2nd stageoutlet (2″
weld flange)
Adjustablehead
5-3/8(14)
Appendix C—Outline dimensionsmodel t791 (two stage) bare Compressor with flywheel
Inches (Centimeters)
29
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5-5/8(14.3)
21-3/16(53.8)
20(50.8)
2-1/8 (5.4)
4-3/4 (12.1)
15 (38.2) 14-1/2 (36.9)
5-1/2 (14.1)
13-5/8 (34.5)
Crankcaseoil heater(optional)
8-1/4(21)
1 (2.5)
5-3/8(13.6)
5-3/8(13.6)
1/4″ upperdistance
piece
51-1/4(130.1)
43-5/8(110.8)
Suction valveunloaders(optional)
5-7/16(13.9)
Inlet (2″ weld flange)
5-7/16(13.9)
Outlet (2″weld flange)
1/4″ NPTlower
distancepiece
Four 9/16″ (1.4)diameter holes
Inlet (2″ weld flange)
Appendix C—Outline dimensionsmodel t891 (single stage) bare Compressor with flywheel
Inches (Centimeters)
30
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Beltguard
Inlet(2″ w
eld flange)
Crankcaseoil drain
24 (60.96)7
(17.78)3-9/16(9.13)
57-1/4(145.34)49-5/8
126.10
31(78.74)
5-3/4(14.61)
1-1/2(3.81)
2(5.08)
Pressure gauge
(Inlet)
Suction valve unloaders
(optional)5-1/2
(13.92)5-1/2
(13.92)
Inlet(2″ w
eld flange)P
ressure gauge(outlet)
Outlet
(2″ weld flange)
Purge connections
(1/4″)
Crankcase heater
(optional)E
lectric motor driver
Low oil pressure sw
itch(optional)
18 (45.72)
4(10.21)
10 (25.40)
56 (142.24)
Adjustable driver slide base
Use six 3/4″
anchor bolts6
(15.24)
36 (91.44)
Purge
connections(1/4″)
22-1/2 (57.15)
3/4(1.91)
7(17.78)
Suction valve unloaders
(optional)
Appendix C—Outline dimensionsmodel t891 (single stage) with 103 mounting
Inches (Centim
eters)
31