Fushiman RPC14 relief valve

Manufacturer: Fushiman Co.,LTD.
Model: RPC14

Model	Nominal diameter	fluid	Set pressure	Maximum operating temperature	Body Material	Connection
RPC14	15〜40	Liquid	0.04 to 1.6 MPa	200℃	FC	Fflange

Features

A dashpot is installed in the valve disc and valve seat, making it less likely to cause chattering. Additionally, it prevents damage to the seat surface, eliminates noise issues, and protects the equipment.
With a fully sealed structure, it can also be used in locations where there is some back pressure on the discharge side.
It can also be used as a simple back pressure valve.

RPC14

Shape		Sealed Type without Lever
Fluid		Water, Oil, Non-Corrosive Liquid
Pressure		Set 0.04–1.6 MPa (Back Pressure: 1.0 MPa or Less)
Operating Temperature		0–200°C
Maximum Usable Viscosity		2000 mm²/s (At Operating Temperature)
Materials	Valve Body	Cast Iron
	Valve Seat	Stainless Steel
	Valve Disc	Stainless Steel
	Valve Stem	Stainless Steel
	Spring Protection Tube	Cast Iron
	Adjustment Spring	Spring Steel, Piano Wire
	Cover	Cast Iron
	Adjustment Screw	Brass
Applications		Pump Bypass, Back Pressure Valve
Applicable Standards		Pressure Vessel Structural Standards

When there is pressure (back pressure) on the discharge side, the blow-off pressure will differ from the valve’s set pressure.
Additionally, if the back pressure changes, the blow-off pressure will also change.
When there is back pressure, the inlet-side pressure will be the set pressure plus the back pressure.
The maximum inlet-side pressure is 1.6 MPa.

Nominal Diameter (Inlet × Outlet)	Face-to-Face Distance		Height (H₂)	Pipe Connection		Mass (kg)
Nominal Diameter (Inlet × Outlet)	L	H₁	Height (H₂)	Inlet	Outlet	Mass (kg)
15 × 15	38	48	129	JIS Rc Threaded	JIS Rc Threaded	1.5
20 × 20	38	48	129	JIS Rc Threaded	JIS Rc Threaded	2
25 × 25	44	56	140	JIS Rc Threaded	JIS Rc Threaded	3
32 × 32	51	70	162	JIS Rc Threaded	JIS Rc Threaded	4
40 × 40	57	75	182	JIS Rc Threaded	JIS Rc Threaded	5

RPC14 Model Water Discharge Volume (Based on General Discharge Volume Calculation Formula)

Nominal Diameter	15	20	25	32	40	50	65	80
Seat Bore Diameter D (mm)	20	20	25	32	40	50	65	80
Lift l (mm)	0.28	0.5	0.63	0.8	1.0	1.25	1.63	2.0
Set Pressure (MPa·G)/ Blowout Area A (mm²)	12.4	22.2	34.9	56.8	88.8	138.8	235.3	355.3
0.1	423	758	1191	1939	3032	4740	8036	12134
0.2	598	1072	1685	2743	4289	6704	11364	17160
0.3	733	1313	2064	3360	5252	8210	13919	21017
0.4	847	1516	2383	3879	6065	9480	16072	24269
0.5	946	1695	2665	4337	6781	10600	17969	27133
0.6	1037	1857	2919	4751	7428	11611	19684	29723
0.7	1120	2006	3153	5132	8024	12542	21261	32105
0.8	1197	2144	3371	5486	8578	13408	22729	34321
0.9	1270	2274	3575	5819	9098	14221	24108	36403
1.0	1339	2397	3769	6134	9590	14990	25412	38373
1.1	1404	2514	3953	6433	10058	15722	26653	40246
1.2	1467	2626	4129	6720	10505	16421	27838	42035
1.3	1526	2733	4297	6994	10934	17092	28975	43752
1.4	1584	2836	4459	7258	11347	17737	30068	45403
1.5	1640	2936	4616	7513	11746	18359	31124	46997
1.6	1694	3032	4767	7759	12131	18961	32145	48538
1.7	1746	3126	4914	7998	12504	19545	33134	50032
1.8	1796	3216	5057	8230	12867	20112	34094	51482
1.9	1845	3304	5195	8455	13219	20663	35029	52893
2.0	1893	3390	5330	8675	13563	21200	35939	54267

The discharge volume calculation formula is based on the calculation formula for relief valves in the High-Pressure Gas Safety Act.
This table applies when the valve outlet pressure is atmospheric pressure and the overpressure is 25%.
If G ≠ 1, multiply the values in the table by the corresponding G value to obtain the required discharge volume.

R101-1BHA Model Water Discharge Volume (Based on General Discharge Volume Calculation Formula)

Nominal Diameter	15-20	25	32	40
Seat Bore Diameter D (mm)	20	25	32	40
Lift l (mm)	0.7	0.8	1.0	1.3
Set Pressure (MPa·G)/ Blowout Area A (mm²)	43.9	62.8	100.5	163.3
0.1	1499	2144	3432	5645
0.2	2120	3033	4854	7983
0.3	2596	3714	5945	9778
0.4	2998	4289	6864	11291
0.5	3352	4795	7675	12623
0.6	3672	5253	8407	13828
0.7	3966	5674	9081	14936
0.8	4240	6066	9708	15967
0.9	4497	6434	10297	16936
1.0	4741	6782	10854	17852
1.1	4972	7113	11383	18724
1.2	5193	7429	11890	19556
1.3	5405	7733	12375	20355
1.4	5609	8025	12842	21123
1.5	5806	8306	13293	21865
1.6	5997	8579	13729	22582

The discharge volume calculation formula is based on the calculation formula for relief valves in the High-Pressure Gas Safety Act.
This table applies when the valve outlet pressure is atmospheric pressure and the overpressure is 25%.
If G ≠ 1, multiply the values in the table by the corresponding G value to obtain the required discharge volume.