Pneumatic diaphragm with hand wheel through the single-seat control valve

Product description:

The new series of pneumatic film direct single-seat control valve with top guide structure, with multi-spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, S-shaped fluid passage, small pressure drop loss, large valve capacity, precise flow characteristics and convenient disassembly and assembly. Widely used in precise control of gas, liquid and other media, process parameters such as pressure, flow, temperature, liquid level at a given value. Especially suitable for small amount of leakage before and after the valve is not small pressure on the workplace.

This series of products have a standard type, regulation cut off, bellows sealed, jacket insulation and other varieties. Nominal product pressure rating PN10,16,40,64; body diameter range DN20 ~ 200. For fluid temperature from -200 ℃ ~ + 560 ℃ range of a variety of grades. Leakage standards have grade IV or VI level. Flow characteristics are linear or equal percentage. A wide variety of specifications to choose from.
 

Features:

 1, top-oriented single-seat control valve, compact structure, fewer parts, easy maintenance. 
 2, the metal spool for a variety of workplaces, up to Level IV leakage standards, ZXPQ-type soft-sealed spool up to Level VI leakage standards. 
 3, the valve body designed by the principle of fluid mechanics, such as cross-section low flow resistance flow channel, the rated flow coefficient increased by 30%. 
 4, adjustable range, the inherent adjustable ratio of 50. 
 5, the implementing agencies using multi-spring structure, a 30% reduction in height, weight reduction of 30%. 
 6, ZXPV bellows sealed control valve, the valve stem to form a complete seal, blocking fluid leakage. 
 7, ZXPJ-type control valve with a thermal jacket for fluid cooling easy to crystallize, clogging caused by solidification of the occasion.
 

Part Information:

Body, bonnet: HT200, ZG230-450 ZG1Cr18Ni9Ti 
 Spool, seat: 1Cr18Ni9Ti, Stellite alloy surfacing 
 soft seal Spool: Reinforced PTFE 
 Filling: PTFE, flexible graphite 
 bellows: 1Cr18Ni9Ti 
 pad Film: Asbestos board, 10,1 Cr18Ni9Ti, asbestos wrap gasket 
 Membrane cover: A3 
 Corrugated diaphragm: NBR rubber reinforced polyester fabric 
 Spring: 60Si2Mn 
 Stem, push rod 
 : 2Cr13 , 1Cr18Ni9Ti Bushing: 2Cr13
 

Technical Parameters:

* This product performance indicators to implement GB / T4213-92 standards

◆ Dimensions and Weight  Standard, heat sink, high temperature type Dimensions Unit: mm

* Cooling, high temperature type (H) is the value of PN16 ** Jacket height H1 and H increased by 15%

◆ Bellows sealed external dimensions

Specifications Weight:

Regulating valve weight table & bnsp; & bnsp; unit: kg

* In this table, the weight of high temperature type of heat dissipation is based on PN16 and the low temperature type is based on PN40
 

Connection standard:

· Flange standard cast iron flange according to GB4216.5-84 steel flange according to GB9113-88, JB / T79-94 
 · Flange sealing surface type: PN10, PN16 is convex; PN40, PN64 is convex surface, body is Concave. 
 · Membrane actuator air signal interface: Female thread M16X1.5 
 · Jacket insulation jacket Heat transfer body interface: Butt welding φ18X4 
 * The body flange and the flange end face distance can be manufactured according to user-specified standards. 
 Such as: ANSI, JIS, JPI and other standards. 
 
 ◆ Ordering Information When
 ordering, please provide the following information: 
 · Control valve name and model 
 · Nominal diameter (mm) 
 · Nominal pressure (MPa) 
 · Rated flow coefficient (Kv) 
 · Inherent flow characteristics 
 · Media name 
 · Operating temperature and range 
 · The whole mode 
 of action · Body, valve trim and packing material 
 · With accessories 
 · Other special requirements