Description
DEENPU provides the complete Townsend Type 81 hydraulic BOP parts list with full OEM part-number cross-reference. All items listed are available as interchangeable replacement parts, manufactured to match the original specifications for 7-1/16″ and 9″ bore sizes in 3M and 5M working pressures.
NS = Not Shown / No Item Number in original catalog. ^ = included in seal kit. * = for old-style T-81 only. ** = hydraulic port holes differ on left & right side.
Townsend Type 81 Hydraulic Parts List — 7-1/16″ & 9″ BOPs
| Item # | Description | Qty Single | Qty Double | 7-1/16″ 3M | 7-1/16″ 5M | 9″ 3M | 9″ 5M |
|---|---|---|---|---|---|---|---|
| 1 | Bonnet Rebuild Kits | 2 | 4 | TH8100 | TH8100 | TH8100 | TH8100 |
| NS | Single Body (studded) | TH8107 | TH8107-5 | TH8107-8 | TH8107-8-5 | ||
| NS | Double Body (studded) | TH8108 | TH8108-5 | TH8108-8 | TH8108-6-5 | ||
| 2 | Tap End Stud | 24 | 24 | 300-330 | 300-770 | 300-765 | 300-782 |
| 3 | G2 Hex Nut | 24 | 24 | 300-703 | 300-705 | 300-705 | 300-707 |
| 4 | End Cover G2 Hex Nut | 8 | 16 | 300-702 | 300-702 | 300-702 | 300-702 |
| 5 | End Cover Tap End Stud | 8 | 16 | 300-315 | 300-315 | 300-321 | 300-321 |
| 6 | Inside Bonnet Seal | 2 | 4 | TH815 | TH815 | TH815 | TH815 |
| 7 | 1/4″ NPT Pipe Plug | 6 | 12 | TH816 | TH816 | TH816 | TH816 |
| 9 | Cylinder Hex Head Bolt | 12 | 24 | TH818 | TH818 | TH818-8 | TH818-8 |
| 11 | Lifting Plate | 2 | 2 | TH819 | TH819 | TH819-8 | TH819-8 |
| NS | 14″ Hand Wheel | 1 | 2 | TH8111 | TH8111 | TH8111 | TH8111 |
| NS | Universal Joint | 1 | 2 | TH8112 | TH8112 | TH8112 | TH8112 |
| 15 | Set Screw S.S. | 2 | 4 | TH8113 | TH8113 | TH8113 | TH8113 |
| 16 | Protector Bolt, M.O.R. | 4 | 8 | TH8114 | TH8114 | TH8114 | TH8114 |
| 17 | End Cover Seal | 4 | 8 | TH8115 | TH8115 | TH8115 | TH8115 |
| 18 | O.D. Packing Gland O-Ring | 2 | 4 | TH8116 | TH8116 | TH8116-8 | TH8116-8 |
| 20 | Cylinder O-Ring | 4 | 8 | TH8117 | TH8117 | TH8117 | TH8117 |
| 21 | End Cover Port O-Ring | 4 | 8 | TH8118 | TH8118 | TH8118 | TH8118 |
| 22 | Piston to Ram Shaft O-Ring | 2 | 4 | TH8119 | TH8119 | TH8119 | TH8119 |
| 23 | Manifold Tube O-Ring | 4 | 8 | TH8120 | TH8120 | TH8120 | TH8120 |
| 24 | Door Seal | 2 | 4 | TH8121 | TH8121 | TH8121-8 | TH8121-8 |
| 25 | Packing Gland I.D. Wiper | 2 | 4 | TH8122 | TH8122 | TH8122 | TH8122 |
| 26 | Piston Crown Seal | 2 | 4 | TH8123 | TH8123 | TH8123 | TH8123 |
| 27 | Packing Gland | 2 | 4 | TH8124 | TH8124 | TH8124 | TH8124 |
| 28 | Ram Shaft Packing Assembly | 2 | 4 | TH8125 | TH8125 | TH8125 | TH8125 |
| 29 | Ram Guide Pin | 2 | 4 | TH8126 | TH8126 | TH8126 | TH8126 |
| 30 | Alignment Plug | 2 | 4 | TH8127 | TH8127 | TH8127-8 | TH8127-8 |
| 31 | End Cover (Left or Right) | 2 | 4 | TH8128 | TH8128 | TH8128-8 | TH8128-8 |
| 32 | Door | 2 | 4 | TH8129 | TH8129-5 | TH8129-8 | TH8129-8-5 |
| 33 | Piston | 2 | 4 | TH8130 | TH8130 | TH8130 | TH8130 |
| 34 | Cylinder | 2 | 4 | TH8131 | TH8131 | TH8131-8 | TH8131-8 |
| 35 | Balance Stem | 2 | 4 | TH8132 | TH8132 | TH8132-8 | TH8132-8 |
| 36 | Protector, M.O.R. | 2 | 4 | TH8133 | TH8133 | TH8133-8 | TH8133-8 |
| 37 | Locking Shaft | 2 | 4 | TH8134 | TH8134 | TH8134-8 | TH8134-8 |
| 38 | Ram Shaft | 2 | 4 | TH8135 | TH8135 | TH8135-8 | TH8135-8 |
| 39 | Manifold Tube | 2 | 4 | TH8136 | TH8136 | TH8136-8 | TH8136-8 |
| 41 | Bonnet (Left or Right) | 2 | 4 | TH8137 | TH8137 | TH8137-8 | TH8137-8 |
| 42 | Door Nut | 10 | 20 | 300-702 | 300-703 | 300-702 | 300-703 |
| 43 | Door Stud | 10 | 20 | 300-315 | 300-325 | 300-315 | 300-325 |
| 44 | Brass Spacer Ring | 2 | 4 | TH8140 | TH8140 | TH8140 | TH8140 |
| NS | Pipe Plug 3/4″ | 4 | 8 | TH8145 | TH8145 | TH8145 | TH8145 |
| 50 | Ram Assembly | 1 | 2 | See Rams Page | See Rams Page | See Rams Page | See Rams Page |
Interchangeable Spare Parts Available
DEENPU supplies every item in the parts list above as an interchangeable replacement part for the Townsend Type 81 BOP. This includes bonnet rebuild kits, studs and nuts, seals and O-rings, doors and bonnets, pistons and cylinders, manifold tubes, ram shafts, and complete ram assemblies.
Ordering Information
To order, please specify: BOP bore size (7-1/16″ or 9″), working pressure (3M or 5M), single or double configuration, and the item numbers and quantities you need. Provide the OEM Townsend part number for cross-reference where available.
Contact DEENPU for Orders & Technical Support
Email: SALES@DEENPU-MACHINERY.COM
Phone / WhatsApp: +86 18051728055
ATTN: LINDA HU
Address: Yandu District, Yancheng City, Jiangsu Province, China
Web: www.deenpu-machinery.com
Our company has been in the oil & gas drilling equipment industry for over more years, We are here to serve all your drilling equipment needs.
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