ZCLW pneumatic thin film low-temperature regulating valveDetailed product description：

ZCLW Pneumatic Thin Film Low Temperature Control Valve

Product Features
German technology import process film mechanism is easy to use
Simple flow path, stable performance, long neck insulation, low-temperature operation

Product Overview
Pneumatic thin film low-temperature regulating valve is a type of regulating valve used in low-temperature and cryogenic environments Adopting a long neck valve cover for insulation and equipped with a multi spring actuator. It has the advantages of compact structure, light weight, and good stability The valve body is precision cast and made of aluminum alloy, which has good low temperature resistance The glass tube seal ensures that the regulating valve does not leak in low-temperature situations. Therefore, it is widely used in low-temperature and cryogenic applications such as metallurgy, air separation, oxygen production, petroleum, chemical industry, etc Specially suitable for precise control of process parameters such as pressure, flow rate, temperature, and liquid level of low-temperature gases and liquids (such as liquid oxygen, liquid argon, etc.) to maintain them at given values.
This series of products comes in two types: connection plate installation type and floating sleeve installation type. The nominal pressure rating of the product is PN6; The valve body diameter range is DN20~100. Suitable for fluid temperatures ranging from -200 ℃ to -250 ℃ in various grades. The leakage standard has IV or VI level. The flow characteristics are linear or equal percentage. A variety of varieties and specifications are available for selection.
1. The flow path is simple, the resistance is low, the valve body capacity is large, and the dual directional valve has good working stability;
2. Large adjustable range, with an inherent adjustable ratio of 50;
3. The bellows seal forms a complete seal for the moving valve stem, blocking fluid leakage;

Main component materials
Valve body: LF4 LF2 LF3 LCB WCB SS316 SS304 SS316L WC1 WC2
Valve stem: 1Cr18Ni9 2Cr13 304 316 316L
Valve cover: 1Cr18Ni9 316? WCB? LCB LF1 LF2 LF3 LF4 WC1 WC2?  
Bellows: 1Cr18Ni9 316 304 316L
Valve core and seat: 1Cr18Ni9 316? WCB? LCB LF1 LF2 LF3 LF4 WC1 WC2?  
Gasket: Copper, 1Cr18Ni9 316

ZCLW Pneumatic Thin Film Low Temperature Control Valve Specification and Technical Parameters

Nominal diameter DN (mm)

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

Valve seat diameter dn (mm)

ten

twelve

fifteen

twenty

Rated flow coefficient KV

Straight Line

one point eight

two point eight

four point four

six point nine

eleven

seventeen point six

twenty-seven point five

forty-four

sixty-nine

one hundred and ten

one hundred and seventy-six

equal percentage

one point six

two point five

four

six point three

ten

sixteen

twenty-five

forty

sixty-three

one hundred

one hundred and sixty

Rated stroke (mm)

sixteen

twenty-five

forty

Effective area of membrane Ae (cm2)

two hundred and eighty

four hundred

six hundred

Inherent flow characteristics

Straight line, equal percentage

Nominal pressure PN (MPa)

zero point six

Inherent Adjustable Ratio (R)

fifty

Working temperature t (℃)

D0：-60~-100， D1：-100~-200， D2：-200~-250

Signal range PN (KPa)

20~100，40~200，20~60，60~100，80~240

Allowable pressure difference （MPa）

Without locator

zero point six

zero point four seven

zero point three zero

zero point two seven

zero point one eight

zero point one one

Equipped with locator

zero point six

zero point four one

zero point two six

Allowable leakage amount

Level IV, Level VI

Gas source pressure Ps (MPa)

0.14~0.4

External dimensions and weight

Nominal diameter (DN)

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

Valve seat diameter (dn)

ten

twelve

fifteen

twenty

A

two hundred and eighty-two

three hundred and eight

three hundred and ninety-four

L

seventy-five

eighty-five

one hundred and ten

one hundred and sixty

one hundred and seventy

L1

seventy-five

eighty-five

one hundred and ten

one hundred and fifty

one hundred and sixty

D1

ф20

ф25

ф32

ф40

ф50

ф66

ф82

ф102

D2

ф25

ф30

ф37

ф45

ф55

ф84

ф90

ф110

H

H1=500

nine hundred and fifty-two

nine hundred and seventy-one

nine hundred and eighty

one thousand and six

H1=600

one thousand two hundred and fifty

H1=700

one thousand one hundred and fifty-two

one thousand one hundred and seventy-one

one thousand one hundred and eighty-one

one thousand two hundred and six

H1=800

one thousand four hundred and fifty

H1=900

one thousand three hundred and fifty-two

one thousand three hundred and seventy-one

one thousand three hundred and eighty-one

one thousand four hundred and six

H1=1000

one thousand six hundred and fifty

n-d

8-ф14

8-ф16

10-ф16

12-ф18

D3

two hundred and sixty

two hundred and eighty-five

three hundred and five

three hundred and forty

three hundred and seventy

four hundred and five

four hundred and sixty

D4

two hundred and ninety

three hundred and fifteen

three hundred and thirty-five

three hundred and seventy

four hundred

four hundred and thirty-five

four hundred and ninety

D5

two hundred and eighty-nine

four hundred and seventy

Valve body lining material and applicable scope

Valve body lining	Operating temperature (℃)	Applicable Medium
unlined	-10~+175	Suitable for non corrosive media
soft rubber	-10~+85	Has excellent wear resistance and is suitable for cement, clay, coal dust, dry fertilizers, etc
Hard rubber	-10~+85	Suitable for non mechanical, salt, hydrochloric acid, metal plating solution, soft water, chloride, chlorine gas, etc
neoprene	-10~+105	Suitable for corrosive mud with a wide range of pH values in animal oil, vegetable oil, and lubricating oil. Good anti-wear performance
Ding Quan Jiao	-10~+120	Good anti-corrosion and wear resistance, with the best corrosion resistance to most inorganic acids and acidic mortars
enamel	-10~+175	Suitable for compounds such as warm inorganic acids, oxidizing acids, halogens, alcohols, esters, etc
Fluorine 46	-10~+190	Suitable for strong corrosive media such as sulfuric acid, hydrochloric acid, sodium hydroxide, etc

Diaphragm material and scope of application

Connection method: Welding
Thin film actuator signal interface: Internal thread M16 × 1.5
Ordering Instructions

Diaphragm material	Operating temperature (℃)	Applicable Medium
Ding Quan glue (Grade B)	-40~+100	Most inorganic acids such as sulfuric acid, hydrofluoric acid, phosphoric acid, etc. are suitable for good corrosion resistance, while various bases and salts
Natural rubber (Q-grade)	-50~+100	Mainly used as a mineral acid medium for purifying water, inorganic salts, and olefins
Polytetrafluoroethylene	-10~+150	Excellent chemical stability, corrosion resistance to strong acids, concentrated alkalis, and strong oxidants

1. Product model and name 2. nominal diameter DN (mm)
3. Nominal pressure 4. Flow characteristics
5. Valve body material and sealing requirements 6. Rated flow coefficient
7. Type of medium and temperature range 8. Pressure difference before and after the valve
9. Gas source pressure and control method 10. Other special requirements