3”TYPE B SHEAR RELIEF VALVE ASSEMBLY BUMPER

1.Main Applications

Shear relief valve for mud pump discharge line,Prevent rapid emptying pump pressure exceeds a predetermined value,Thus ensuring the safety of mud pump.

2.Working Principle

Safety valve include the valve stem, the valve body,box,shear pin and shield and other components. Mud pressure at the end face of the body,Valve body by thrust on upward, The thrust from the stem pass shear pins, So that the shear pin is subjected to shear, When the thrust reached by making shear pin shear stress is greater than the shear strength of the material of the Ultimate shear pin. Shear pin will be cut. Different positions of the shear pin,You can control different mud pressure.

3.Technical Parameters

Model	Max Pressure ( MPa )	Inlet Connection Type	Outlet	Remarks
JA-3	37.8	NPT3	NPT3	Single-Pin
JA-3F	37.8	Flange	NPT3	Single-Pin
JA-3H	52	Flange	NPT3	Double -Pin
LSJA-3H	52	Flange	NPT3	Double -Pin
DJA52-00	52	2 1/16 or 3 1/16 70Mpa Flange	3 ” Union	Single-Double-Pin

4.Part List

JA-3 Shear Relief Valve
Item	Part number	Name	QTY	U.W Kg	Total Kg
1	1209101	Joint	1	4.5	4.5
2	1209102	Retainer	1	0.003	0.003
3	1209103	Piston Assy	1	0.057	0.057
4	1209104	Valve Body	1	12.75	12.75
5	1209105	Piston Rod	1	0.4	0.4
6	1209106	Cushion	1	0.1	0.1
7	1209107	Elastic Cylindrical Pin	1	0.005	0.005
8	1209108	Locking Spring	1	0.07	0.07
9	1209109	Safety Cover	1	1.2	1.2
10	1209110	Shear Plate	1	0.3	0.3
11	1209111	Shear Pin	1	0.022	0.022
12	1209112	Name plate	1	0.08	0.08
13	1209113	Shear Shaft	1	0.052	0.052
14	1209114	Wire Retainer	2	0.002	0.004
15	1209115	Name plate	1	0.001	0.001
16	1209116	4×26 Cotter Pin	1	0.01	0.01
17	1209117	M4 Nut	1	0.002	0.002
18	1209118	M4×16 Screw	4	0.001	0.004
19	1209119	M10 Nut	1	0.001	0.001
20	1209120	M10×110 Stud	2	0.001	0.002
21	1209121	M3×8 Screw	2	0.001	0.002
22	1209122	Nut	1	0.01	0.01
23	1209123	Kit Repair	1	3	3

JA-3F Shear Relief Valve
Item	Part number	Name	QTY	U.W Kg	Total Kg
1	1310101	Flange joint	1	4.5	4.5
2	1310102	Retainer	1	0.003	0.003
3	1310103	Piston Assy	1	0.057	0.057
4	1310104	Valve Body	1	12.75	12.75
5	1310105	Piston Rod	1	0.4	0.4
6	1310106	Cushion	1	0.1	0.1
7	1310107	Elastic Cylindrical Pin	1	0.005	0.005
8	1310108	Locking Spring	1	0.07	0.07
9	1310109	Safety Cover	1	1.2	1.2
10	1310110	Shear Plate	1	0.3	0.3
11	1310111	Shear Pin	1	0.022	0.022
12	1310112	Name plate	1	0.08	0.08
13	1310113	Shear Shaft	1	0.052	0.052
14	1310114	Wire Retainer	2	0.002	0.004
15	1310115	Nameplate	1	0.001	0.001
16	1310116	4×26 Cotter Pin	1	0.01	0.01
17	1310117	M4 Nut	1	0.002	0.002
18	1310118	M4×16 Screw	4	0.001	0.004
19	1310119	M10 Nut	1	0.001	0.001
20	1310120	M10×110 Stud	2	0.001	0.002
21	1310121	M3×8 Screw	2	0.001	0.002
22	1310122	Nut	1	0.01	0.01
23	1310123	Kit Repair	1	3	3

JA-3H Shear relief valve
Item	Part number	Name	QTY	U.W Kg	Total Kg
1	1411101	Flange	1	11.9	11.9
2	1411102	Valve Body	1	17.3	17.3
3	1411103	Piston Body	1	0.57	0.57
4	1411104	Cushion	1	0.066	0.066
5	1411105	Locking Spring	1	0.04	0.04
6	1411106	Safety Cover	1	6.04	6.04
7	1411107	Shear Plate	1	0.396	0.396
8	1411108	Shear Pin	2	0.022	0.044
9	1411109	Nameplate	1	0.025	0.025
10	1411110	Shear Shaft	1	0.051	0.051
11	1411111	IMark	1	0.011	0.011
12	1411112	ⅡMark	1	0.011	0.011
13	1411113	Retainer	1	0.002	0.002
14	1411114	Piston Assy	1	0.05	0.05
15	1411115	5×60 Elastic Cylindrical Pin	1	0.004	0.004
16	1411116	16 Wire Retainer	1	0.003	0.003
17	1411117	M4 Nut	2	0.001	0.002
18	1411118	Stud	1	0.08	0.08
19	1411119	Screw	2	0.002	0.004
20	1411120	Nut	8	0.001	0.008
21	1411121	Cotter Pin	1	0.003	0.003
22	1411122	Nut	2	0.001	0.002
23	1411123	Cotter Pin	1	0.001	0.001
24	1411124	Nut	1	0.01	0.01
25	1411125	Kit Repair	1	3	3

LSJA-3H Shear Relief Valve
Item	Part number	Name	QTY	U.W Kg	Total Kg
1	1512101	Flange	1	11.9	11.9
2	1512102	Valve Body	1	17.3	17.3
3	1512103	Piston Body	1	0.57	0.57
4	1512104	Cushion	1	0.066	0.066
5	1512105	Locking Spring	1	0.04	0.04
6	1512106	Safety Cover	1	6.04	6.04
7	1512107	Shear Plate	1	0.396	0.396
8	1512108	Shear Pin	2	0.022	0.044
9	1512109	Nameplate	1	0.025	0.025
10	1512110	Shear Shaft	1	0.051	0.051
11	1512111	I Mark	1	0.011	0.011
12	1512112	ⅡMark	1	0.011	0.011
13	1512113	Retainer	1	0.002	0.002
14	1512114	Piston Assy	1	0.05	0.05
15	1512115	5×60 Elasic Cylindrical Pin	1	0.004	0.004
16	1512116	16 Wire Retainer	1	0.003	0.003
17	1512117	M4 Nut	2	0.001	0.002
18	1512118	Stud	1	0.08	0.08
19	1512119	Screw	2	0.002	0.004
20	1512120	Nut	8	0.001	0.008
21	1512121	Cotter Pin	1	0.003	0.003
22	1512122	Nut	2	0.001	0.002
23	1512123	Cotter Pin	1	0.001	0.001
24	1512124	Nut	1	0.01	0.01
25	1512125	Kit Repair	1	3	3

DJA52-00 Shear relief valve
Item	Part number	Name	QTY	U.W Kg	Total Kg
1	1613101	Suction Flange Joint	1	21.58	21.58
2	1613102	Liner	1	2.79	2.79
3	1613103	M6×10 Screw	2	0.05	0.1
4	1613104	Piston Units	1	0.98	0.98
5	1613105	Valve Body	1	43.5	43.5
6	1613106	Buffer	1	0.056	0.056
7	1613107	Safety Guard	1	6.04	6.04
8	1613108	Shear Plate	2	0.35	0.35
9	1613109	M4×16 Screw	1	0.005	0.005
10	1613110	M4 Nut	1	0.001	0.001
11	1613111	Discharge Flange	1	7.55	7.55
12	1613112	M20×90 Stud	1	0.011	0.011
13	1613113	20Spring Gasket	2	0.044	0.044
14	1613114	65×3.55O-ring	1	0.004	0.004
15	1613115	80×3.550-ring	2	0.0001	0.0002
16	1613116	M10-5-Zn.D Nut	1	0.001	0.001
17	1613117	M10×110-4.8-Zn.D Screw	1	0.08	0.08
18	1613118	Shaft Pin	1	0.051	0.051
19	1613119	16 Retainer Ring	8	0.001	0.008
20	1613120	I Name Plate	1	0.011	0.011
21	1613121	Ⅱ Name Plate	1	0.011	0.011
22	1613122	4×10 Aluminum rivet	4	0.001	0.004
23	1613123	Shear Pin	2	0.02	0.04
24	1613124	Name Plate	1	0.12	0.12
25	1613125	Locking Spring	1	0.04	0.04
26	1613126	5×60 Dowel Pin	1	0.02	0.02
27	1613127	2.5×30 Cotter Pin	1	0.002	0.002
28	1613128	3*1502 Union	1