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Ductile Iron Body 200X Pilot-Operated Pressure Reducing Valve

Product Introduction

The Ductile Iron Body 200X Pilot-Operated Pressure Reducing Valve is designed to maintain stable pipeline pressure. Constructed with GGG50/ASTM A536 ductile iron body, stainless steel pilot valve, and elastomer diaphragm, it automatically adjusts the main valve opening via pressure feedback, ensuring precise outlet pressure control. Ideal for high-rise water supply, fire protection networks, and industrial systems requiring constant pressure, it operates at 0℃ to 80℃ with inlet pressure ≤PN25/ANSI 250 and adjustable outlet pressure (0.1-1.6MPa), compatible with DN50-DN400 pipelines.

Product Advantages

- Self-Powered Control: Hydraulic response within ≤2 seconds without external power.

- Flexible Installation: Compatible with horizontal/vertical pipes; flanges meet GB/T 17241 for global standards.

- Low Maintenance: Removable pilot filter and in-line seal replacement minimize downtime.

- Fail-Safe Mechanism: Integrated bypass valve activates during main valve failure to prevent system shutdown.

Product Features

Pilot-Driven Regulation

200X pilot valve detects outlet pressure changes and drives the main valve disc with <±5% deviation.

Water Hammer Resistance

Ductile iron body with slow-close mechanism mitigates pressure surges in high ΔP conditions.

Wide Pressure Adjustment

Outlet pressure is steplessly adjustable (0.1-1.6MPa) via pilot screw for diverse pressure demands.

High Flow Efficiency

Venturi-shaped flow path reduces turbulence, increasing Kv value by 15%-20% versus conventional valves.

Durable Seal Assembly

PA66 + NBR composite seat resists abrasion and media crystallization, requiring maintenance every ≥3 years.

DN (mm)		20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600
L		180	180	180	203	203	215	241	292	330	356	450	500	560	630	700	780	850	980
PN10	D	105	115	135	145	160	180	195	215	245	280	335	390	440	500	565	615	670	780
PN10	D₁	75	85	100	110	125	145	160	180	210	240	295	350	400	460	515	565	620	725
PN16	D	105	115	135	145	160	180	195	215	245	280	335	405	460	520	580	640	705	840
PN16	D₁	75	85	100	110	125	145	160	180	210	240	295	355	410	470	525	585	650	770
PN25	D	105	110	135	145	160	180	195	230	270	300	360	425	485	550	610	660	730	840
PN25	D₁	75	85	100	110	125	145	160	190	220	250	310	370	430	490	550	600	660	770
H		342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	1030	1135	1270
H₁		247	247	247	278	278	298	313	350	365	420	450	470	490	536	570	610	665	725

Technical Parameters

Size	DN32-DN600	DN650-DN2000
Working pressure	16Bar	10Bar
Shell	24Bar	15Bar
Seal	18Bar	11Bar
Operating Temperature	-45°C~+150°C
Operating Environment	Ballast and bilge system Chemical processing Desalination plants Drilling rigs Drinking water Dry powder Food and beverage Gas plants HAVC Mining industry Paper industry Sand handling Seawater Sugar industry Thermo technical water treatment Waste water
Driving Method	Hand Lever Worm Gear Electric Pneumatic

Executive Standards

Design Standard	EN 593, MSS SP67, API 609, BS 5155
Inspection & Test	API 598, ISO 5208, EN 12266
End Standard	ANSI B16.1 CL. 125LB & B16.5 CL. 150LB
	AS 2129 Table D & E
	BS 10 Table D & E
	DIN 2501 (PN6, PN10, PN16)
	EN 1092 (PN6, PN10, PN16)
	ISO 2531 (PN6, PN10, PN16), 7005 (PN6, PN10, PN16)
	KS B / JIS B 1511 / 2210 (5K & 10K)
	MSS SP44 CL. 150LB
	AWWA C207
	SABS 1123 Table 1000/3 & Table 1600/3
Face to Face	ISO 5752, EN 558, MSS SP67, API 609, DIN 3202
Top Flange	ISO 5211