The SI 4740 is the same as a Pressurements T1200.
See below pdf manual from 2004. Parts are shown on the last two pages. When requesting parts availability and/or pricing please provide the model, serial number and part numbers. Click the below link to create a ticket or call us at 1.877.355.3225 to request availability or pricing. To place an order call the same number or email to firstname.lastname@example.org
See the article in this same section for seal kits for deadweight testers.
The 4740 has been replaced by the current model P5514-70M. See P5514 info here,
Most parts in the 4740 and T1200 are different than the P5514 not the ram screw and nut assembly are the same (except for the hub that the handles screw into).
The #23 - #25 banjo assembly is different but all indications are can retrofit it with the new bajo assembly:
Here is parts you want to consider:
1) Banjo Bolt 3918323
2) O-ring 3919393
3) Banjo Test Port 3918298
4) Test Port O-ring 3865195 (Viton)
Test Port seals
You would also want the new adapters and we only sell the adapters in sets.
3875943 ADAPTER SET - NPT - 1/8", 1/4", 3/8" and 1/2" female NPT adaptors, 20k psi (140 MPa) max
3875928 "ADAPTER SET - METRIC - female M20x1.5 and M14x1.5 M18 adaptors, 20k psi (140 MPa) max"
3875937 "ADAPTER SET - BSP - 1/8", 1/4", 3/8" and 1/2" female BSP adaptors, 20k psi (140 MPa) max"