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Dixon Bayco 2016
Replacement Parts
Dry Bulk
Dry Bulk Products
Swing Check Valves
Bayco High Flow 4040 Series 4" Swing Check Valves
Round Flange and Threaded Units
1
Kits 4041RK1, and 4042RK1 contain 2 sets of shafts and springs. Swing check valves manufactured after March 2007 should
use the larger axial shafts and larger torsion springs. Swing check valves manufactured prior to March 2007 will require the
use of the shorter axial shafts and the smaller torsion springs.
Bill of Materials
Item #
Description
Part #
Qty
1 swing check body
---
1
2A valve flapper assembly white
EPDM (4040RD and 4040TE)
use kit
4040RK1
1
3 flapper valve yoke
341595
1
4A left hand shaft (4040RD and
4040TE)
390799
1
4B left hand shaft (4041RD,
4042RD, 4041TE, 4042TE)
390846
1
5A left hand spring (4040RD and
4040TE)
use kit
3030RK3
1
5B
left hand spring (4041RD,
4042RD, 4041TE and
4042TE)
use kit
4041RK3
1
6A right hand shaft (4040RD and
4040TE)
390798
1
6B right hand shaft (4041RD,
4042RD,4041TE & 4042TE)
390847
1
7A right hand spring (4040RD
and 4040TE)
use kit
3030RK3
1
7B
right hand spring (4041RD,
4042RD, 4041TE and
4042TE)
use kit
4041RK3
1
8 cover gasket
111215
1
9 cover
340039
1
10 bolt
use kit
3030HK
6
11 lock washer
use kit
3030HK
6
Part #
Description
Includes Item #
4040RK1
replacement white EPDM flapper kit, flapper assembly, yoke, springs, shafts, cover
gasket (for 4040RD and 4040TE)
2A, 3, 4A, 5A, 6A,
7A, 8
4041RK1
1
complete rebuild kit, metal seat flapper assembly, yoke, springs, shafts, cover
gasket, bolts and lock washers (for 4041RD and 4041TE)
2B, 3, 4B, 5B, 6B,
7B, 8, 10, 11
4042RK1
1
complete rebuild kit, red silicone flapper assembly, yoke, springs, shafts, cover
gasket, bolts and lock washers (for 4042RD and 4042TE)
2C, 3, 4A, 5A, 6A,
7A, 8, 10, 11
3030HK
replacement bolts and lock washers
10, 11
3030RK3
replacement left and right springs (for 4040RD and 4040TE)
5A, 7A
4041RK3
replacement left and right springs (for 4041RD, 4041TE, 4042RD and 4042TE)
5B, 7B
3030SK
optional: anti-tamper security kit for swing check lid, 2 security bolts and wire seal
not illustrated
Repair Kits
The smaller torsion springs will not return the flappers contained in the 4041RK1and 4042RK1 kits to a fully closed
position if the valve is mounted vertically or upside down. Ensure that these mounting positions are avoided if the
smaller springs are used with the 4041RK1, and 4042RK1 kits.