Product Details

Brief Introduction.

This series reducing valve is pilot piston type reducing valve, mainly composed of main valve and pilot valve. The main valve consists of valve seat, main valve disc, piston, cylinder sleeve, and spring. The piston valve consists of valve seat, valve flap, membrane, spring and adjusting spring. The product made big improvement on the basis of normal pressure reducing valve, enlarge the piston area, change the throttle structure, change the sealing manner, improve the pilot structure and manner of adjusting spring, thus to improve the performance of the product in aspects of sensitivity, flow, and service life. The product is mainly applied on steam piping, to reduce and regulate the pressure.

Field of Application.

Product Name: RP-1H-GVPR11 Pilot Operate Steam Pressure Reducing Valve.
Pressure Rating: 1.6- 16.0 Mpa.
Nominal Diameter: DN15-500 mm.
Body Material: Steel, CF8.
Standard Flanges: DIN, ANSI, JIS.

Main Technical Parameters and Indexes of Performance.

Nominal pressure	1.6Mpa	2.5Mpa	4.0Mpa	6.4Mpa	10.0Mpa	16.0Mpa
Tested pressure of shell	2.4Mpa	3.75Mpa	6.0Mpa	9.6Mpa	15.0Mpa	24.0Mpa
Sealing test pressure	1.6Mpa	2.5Mpa	4.0Mpa	6.4Mpa	10.0Mpa	16.0Mpa
Maximum upstream pressure	1.6Mpa	2.5Mpa	4.0Mpa	6.4Mpa	10.0Mpa	16.0Mpa
Pressure range of outlet	0.04-1.0Mpa	0.05-1.6Mpa	0.08-2.5Mpa	0.2-3.5Mpa	0.5-3.5Mpa	0.5-4.5Mpa
Minimum differential pressure	0.07Mpa	0.1Mpa	0.15Mpa	0.3Mpa	0.5Mpa	0.8Mpa
Medium	Steam
Operating temperature	425

*the shell test does not include membrane and top cover.

Flow Characteristics.

DN	50	65	80	100	125	150	200	250	300	350	400	500
Cv	1	2.5	4	6.5	9	16	25	36	64	100	140	250

Material of Main Component.

Name of Component	Material of Component
Valve Body, Valve Cover, Seat Cover	WCB
Valve Seat, Valve Flap	2Cr13
Cylinder Sleeve, Piston	Ampco
Membrane	PH15-7Mo
Piston Ring	Polyphenyl
Pilot Valve Seat, Pilot Valve Rod	2Cr13
Spring of Main Valve	50CrVA
Main Spring of Pilot Valve	50CrVA
Adjusting Spring	60Si2Mn

Main External Dimensions.

DN	External Dimension				DN	External Dimension
	L		H	H1				H	H1
	1.6/2.5 Mpa	4.0 Mpa	H	H1		6.4 Mpa	10.0/16.0 Mpa	H	H1
15	160	180	265	85	15	180	180	280	100
20	160	180	265	85	20	180	200	280	100
25	180	200	280	95	25	200	220	300	115
32	200	220	280	95	32	220	230	300	115
40	220	240	290	105	40	240	240	315	130
50	250	270	300	130	50	270	300	340	135
65	280	300	315	145	65	300	340	355	150
80	310	330	330	170	80	330	360	370	175
100	350/320	380	405	200	100	380		450	205
125	400 /380	450	450	225	125	450		510	235
150	450 /420	500	485	265	150	500		555	275
200	500 /540	550	570	290	200	550		640	300
250	650		640	325	250	650		720	335
300	800		740	360	300	800		830	375
350	850		810	395	350	850		880	410
400	900		950	430	400	900		1020	445
500	950		1080	500	500	950		1080	515

DN	50	65	80	100	125	150	200	250	300	350	400	500
Cv	1	2.5	4	6.5	9	16	25	36	64	100	140	250

DN	50	65	80	100	125	150	200	250	300	350	400	500
Cv	1	2.5	4	6.5	9	16	25	36	64	100	140	250

DN	50	65	80	100	125	150	200	250	300	350	400	500
Cv	1	2.5	4	6.5	9	16	25	36	64	100	140	250