Pneumatic Cage-Guided Single-Seat Regulating Valve

The ZPL210Y/ZPL210WY series cage-guided single-seat control valve adopts a top-guided single-seat sealing structure with a cage and plug. The valve body features an S-shaped flow path and an anti-swirl flow design, ensuring smooth fluid movement, high flow capacity, a wide adjustable range, precise flow characteristic curves, and low seat leakage. Additionally, its soft-sealing structure provides both regulating and shut-off functions, making it a control & isolation valve that can also serve as a shut-off valve.

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Product Overview

Due to its unique structural characteristics (high fluid thrust on the plug, requiring significant unbalance force), this valve is not suitable for high-pressure differentials or large diameters. It is designed for applications demanding low leakage_and small pressure drops. Thus, cage-type single-seat control valves are generally recommended for: Small-bore, high-pressure differential conditions or Large-bore, low-pressure differential conditions. These single-seat control valves are widely used in industrial automation control across sectors such as: Power generation, Metallurgy. Chemical processing, Petroleum, Textiles, Pharmaceuticals, Paper manufacturing. etc.

Specifications

Body Type	Straight-Through Type
Size	DN15~DN200
D&M Std.	GB/T4213
F2F Std.	GB/T17213.3, ISA 75.03, ISA 75.16
PT&I Std.	GB/T4213,ANSI FCI 70-2-2006
Conn.Std.	Flange Std.	RF Type, FM/M Type, T/G Type, FF Type
	HG/T20592-2009	PN10, PN16, PN25, PN40
	ASME B16.5	150LB, 300LB
	JIS B2210	10K, 16K, 20K
Sealing Type	Seat Sealing Type	Metal+STL Seated; Soft Seated
Sealing Type	Stem Sealing Type	Packing Sealing, Bellows Sealing
Materials	Body/Bonnet Material	LCB, WCB, WC6, WC9, SS304, SS316L
	Plug Material	F304, F316L, etc
	Stem Material	17-4PH, F304, F316L, etc
	Seat Material	F304, F316L, etc
	Bellows Material	SS316L
	Packing Material	V-RingPTFE; Graphite+PTFE
Bonnet Type	Standard Type	-17℃~+230℃
	Extended(Finned)Type	230℃
	Cryogenic Type	196℃~-17℃
	Bellows Type	Toxic, Volatile, or Hazardous media
Technical Parameters	Flow Characteristic	Equal percentage (EQ%)/ Linear (LIN)/ Quick opening (QO)
	Leakage Level	Metal Seated: ANSI B16.104 Class IV
	Leakage Level	Soft Seated: ANSI Actuator B16.104 Class VI
	Rangeability	50:1
	Basic Error	w/o pos.: ≤±8%, w/pos.: ≤±1.5%
	Hysteresis Error	w/pos.: ≤1.5%
	Dead Band	w/o pos.: ≤6%, w/pos.:≤0.5%
Accessories	Actuator	Pneumatic Diaphragm Actuator ZP6100 Series
		Electric Piston Actuator ZP6200 Series
		Electric Actuator ZP8000 Series
	Main Accessories	Positioner, Air Filter Regulator, Handwheel
	Others	Limit Switch, Solenoid Valve, Volume booster, Position transmitter, Lock-up valve

Features	Description
Dependable Bonnet	Integrally forged bonnet for superior material density and structural stability, delivering enhanced pressure containment performance
Low-Emission Packing	Advanced graphite-reinforced PTFE packing system, featuring excellent sealing performance, low friction, and low torque characteristics
High-Rigidity Plug & Stem	Monolithic plug & stem design ensures continuous stable operation under cyclic loading
High-Gloss Stem	The packing-contact stem is precision-finished by CNC grinding, achieving superior concentricity and dimensional accuracy.
Replaceable Seat	Quick-release & Dual-sealing face seat design, for enhanced maintainability & service life
Superior Sealing Performance	The valve body, disc, and seat are precision-machined using dedicated CNC equipment, delivering superior structural integrity and enhanced leakage protection
Multi-Application	The cooling fins accommodate high-temperature service; integrated bellows provide absolute containment for hazardous media

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Control Valve Brochure

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Application & Case

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