D & L Meters and Instrument Service, Inc.
Serving Southeasern New Mexico Since 1970
 
 
 
 
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Wellhead Data
 

Type 81 Ram Type BOP
HYDRAULIC & MANUAL DIMENSIONS & SPECIFICATION DATA


 
 

DIMENSIONS
DESCRIPTION
STYLE
7-1/16 x 3M
7-1/16 x 5M
9 x 3M
9 X 5M
Overall Height Studded
(Less Studs)
Single
13"
13-1/4"
13-1/4"
13-1/4"
Double
20-1/2"
20-1/2"
22-1/2"
22-1/2"
Triple
30"
31"
31"
31"
Overall Height Flanged
Single
21-3/8"
26-1/2"
23-3/4"
23-3/4"
Double
30-3/8"
36-3/4"
33"
33"
Triple
38-3/8"
45-1/4"
41-1/2"
41-1/2"
Overall Length
63"
65"
70"
70"
Overall Width
22"
25"
25"
25"
Through Bore
7-1/16"
7-1/16"
9"
9"
Working Pressure (lbs)
3,000
5,000
3,000
5,000
Test Pressure (lbs)
6,000
10,000
6,000
10,000

BOP CAPACITIES
DESCRIPTION
7-1/16 x 3M
7-1/16 x 5M
9 x 3M
9 X 5M
Maximum Operating Pressure/PSI
(to open & close)
1,500
1,500
1,500
1,500
Recommended Operating Pressure/PSI
(to open & close)
1,500
1,500
1,500
1,500
Ratio to Close
4.1:1
4.5:1
4.5:1
4.5:1
Volume of Fluid to Open
(U.S.Gallons)
.55
.60
.62
.62
Volume of Fluid to Close
(U.S. Gallons)
.68
.73
.75
.75
Piston Stroke/Inches
(to open & close)
4-1/8"
4-1/4"
5-1/8"
5-1/8"

WEIGHTS
DESCRIPTION
7-1/16 x 3M
7-1/16 x 5M
9 x 3M
9 X 5M
Single
Studded
1,250
1,600
1,550
1,650
Flanged
1,520
1,800
1,810
1,910
Double
Studded
2,100
2,800
2,750
2,850
Flanged
2,370
3,000
3,010
3,110
Triple
Studded
2,750
3,600
3,550
3,660
Flanged
3,145
3,800
3,810
3,910

 
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