RJT Union Blank with Centered 15NB / 20NB Female BSP Socket (Water Pusher) in 304 Stainless Steel
Ring Joint Type (RJT) union blank cap in 304 stainless steel welded with a centered 15NB (1/2") or 20NB (3/4") half-threaded female BSP socket. Designed as a water pusher for connecting utility hoses, gauges, or purge lines into 1" through 4" RJT unions.
Material options | 304 |
|---|---|
Size range | 1 1/2"–4" (20NB Socket); 1"–4" (15NB Socket) |
Connection | RJT Union Blank × Centered 15NB / 20NB Female BSP Socket |
Body structure | Blank Cap with Welded Half-Threaded BSP Socket (Water Pusher) |
Interface series | RJT × BSP |
Size
Product overview
Water Pusher Construction & Utility Connection Role
Often called a 'water pusher' in dairy and winery cellar operations, this RJT union blank cap combines a standard RJT blank liner profile with a centered, welded half-threaded female BSP socket. Captured inside an RJT union nut and sealed against an RJT male part with a standard RJT O-ring, it converts a sanitary union end into a threaded utility port for water flushing, pigging/pushing lines, pressure gauges, or air blowdown.
20NB vs. 15NB BSP Socket Scope & Dimensions
Manufactured in 304 stainless steel across two consolidated datasheet series, the 20NB (3/4") female BSP socket series (codes RJTB4020 to RJTB10020) covers five RJT union sizes from 1 1/2" to 4" (OD B from 54 mm to 117.5 mm, overall height A = 36 mm, socket OD C = 33.5 mm), while the 15NB (1/2") female BSP socket series (codes RJTB2515 to RJTB10015) covers six RJT union sizes from 1" to 4" (OD B from 41.2 mm to 117.5 mm, overall height A = 31 mm, socket OD C = 26.5 mm).
Selection & Ordering Notes
Because the 1" RJT union blank is only available with the 15NB female BSP socket whereas 1 1/2" through 4" RJT sizes are available with either a 15NB or 20NB socket, specify both the nominal RJT union size and the required BSP female socket bore (15NB or 20NB) when ordering.
Technical specifications
RJT Union Blank with 20NB BSP Socket · Size and material options
Only the listed code, size and material combinations. Assembly component materials are identified separately.
Units: Units: see size-column headings.
| Reference code | Inch size | Metric size | Grade |
|---|---|---|---|
| RJTUBSS40-20 | 1 1/2" | 38.1 | 304 |
| RJTUBSS50-20 | 2" | 50.8 | 304 |
| RJTUBSS65-20 | 2 1/2" | 63.5 | 304 |
| RJTUBSS75-20 | 3" | 76.2 | 304 |
| RJTUBSS100-20 | 4" | 101.6 | 304 |
RJT Union Blank with 20NB BSP Socket · Dimensional reference
Only the codes and size combinations in this table. Match mating faces and installation dimensions to this drawing group.
Units: mm (unless stated otherwise)
| Item | 1 1/2" 38.1 | 2" 50.8 | 2 1/2" 63.5 | 3" 76.2 | 4" 101.6 |
|---|---|---|---|---|---|
| A | 39 | 39 | 39 | 39 | 39 |
| B | 55 | 67 | 80 | 93 | 118 |
| Code | RJTUBSS40-20 | RJTUBSS50-20 | RJTUBSS65-20 | RJTUBSS75-20 | RJTUBSS100-20 |
RJT Union Blank with 15NB BSP Socket · Size and material options
Only the listed code, size and material combinations. Assembly component materials are identified separately.
Units: Units: see size-column headings.
| Reference code | Inch size | Metric size | Grade |
|---|---|---|---|
| RJTUBSS25-15 | 1" | 25.4 | 304 |
| RJTUBSS40-15 | 1 1/2" | 38.1 | 304 |
| RJTUBSS50-15 | 2" | 50.8 | 304 |
| RJTUBSS65-15 | 2 1/2" | 63.5 | 304 |
| RJTUBSS75-15 | 3" | 76.2 | 304 |
| RJTUBSS100-15 | 4" | 101.6 | 304 |
RJT Union Blank with 15NB BSP Socket · Dimensional reference
Only the codes and size combinations in this table. Match mating faces and installation dimensions to this drawing group.
Units: mm (unless stated otherwise)
| Item | 1" 25.4 | 1 1/2" 38.1 | 2" 50.8 | 2 1/2" 63.5 | 3" 76.2 | 4" 101.6 |
|---|---|---|---|---|---|---|
| A | 39 | 39 | 39 | 39 | 39 | 39 |
| B | 42 | 55 | 67 | 80 | 93 | 118 |
| Code | RJTUBSS25-15 | RJTUBSS40-15 | RJTUBSS50-15 | RJTUBSS65-15 | RJTUBSS75-15 | RJTUBSS100-15 |
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