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Check valve zCHE Fig.277

Check valve zCHE Fig.277
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Check valve zCHE Fig.277

Product catalog summary

Product Overview

The document presents technical specifications for the ZETKAMA 277 series check valves, designed for industrial applications including heating, industrial water, steam, industrial oils, compressed air, and neutral fluids.

Application and Features

  • Nominal pressure: PN 16 bar
  • Maximum operating temperature: 200°C
  • Compliance with Pressure Equipment Directive 2014/68/EU
  • CE marking applicable for nominal diameters (DN) ≥ 32
  • Compact design with tight closing according to EN-12334
  • Environmentally friendly and maintenance-free operation

Materials

The valve body is made of grey cast iron (EN-GJL-250, material code 5.3101), with variations depending on nominal diameter:

  • DN 10-20: EN-GJL-250 (5.3101)
  • DN 25-50: EN-GJL-250 (5.3101)

Internal components such as stem, disc, and seat ring are made from stainless steel grades including X17CrNi16-2 (1.4057), X20Cr13 (1.4021), and X12Cr13 (1.4006). Gaskets use carbamide-rubber or PTFE depending on type.

Dimensions

DN (mm)Thread SizeLength (L, mm)Height (H, mm)Width (B, mm)Weight (kg)
103/8"8553360.7
151/2"9056410.9
203/4"10056411.2
251"12082501.7
321 1/4"14099602.2
401 1/2"170112683.6
502"200121844.0

Pressure-Temperature Ratings

The valves are rated for PN 16 pressure class with grey cast iron body (EN-GJL-250). The allowable working pressure decreases slightly with increasing temperature:

  • At 0°C to 120°C: up to 16 bar
  • At 150°C: approx. 14.4 bar
  • At 180°C: approx. 13.4 bar
  • At 200°C: approx. 12.8 bar

Minimum operating temperature is -10°C.

Types and Ordering Information

The product type code is structured as follows: 277 A 040 C 31, where:

  • 277 - Series number
  • A - Body material (grey cast iron EN-GJL-250)
  • 040 - Nominal diameter DN40
  • C - Nominal pressure PN16
  • 31 - Internal component configuration (stem, disc, seat ring stainless steel with loose disc and spring)

Additional types include:

  • Type 38: with PTFE disc gasket, stem, disc, and seat ring stainless steel, loose disc with spring, Tmax 200°C
  • Type 41: stem, disc, and seat ring stainless steel, loose disc without spring, Tmax 200°C

Ordering requires specifying the product number (index) corresponding to the desired configuration.

Critical Notes and Recommendations

  • Data and specifications are subject to change without notice.
  • Ensure compliance with applicable standards and directives, including EN-12334 and Pressure Equipment Directive 2014/68/EU.
  • Verify nominal diameter and pressure ratings to match application requirements.
  • Consider temperature derating for pressure limits at elevated temperatures.
  • Use appropriate type selection based on fluid compatibility and operational conditions.
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Catalog excerpts

Check valve zCHE Fig.277-1

ends form threaded straight CHECK VALVE zCHE body material A grey cast iron nominal pressure nominal diameter correspond to the pressure equipment directive 2014/68/UE marking CE for DN≥32 FEATURES closing thightness acc. to EN -12334 compact settlement environment-friendly no maintenance APPLICATION Industry Heating Industrial water Steam Industrial oils Compressed air Neutral fluids Data given can be changed without notice. ZETKAMA Sp. z o.o. ul. 3 Maja 12 PL 57-410 Ścinawka Średnia e-mail [email protected] www.zetkama.com 1

 Open the catalog to page 1
Check valve zCHE Fig.277-2

ends form threaded straight body material type seat ring Data given can be changed without notice. ZETKAMA Sp. z o.o. ul. 3 Maja 12 PL 57-410 Ścinawka Średnia e-mail [email protected] www.zetkama.com

 Open the catalog to page 2
Check valve zCHE Fig.277-3

ends form threaded straight Data given can be changed without notice. ZETKAMA Sp. z o.o. ul. 3 Maja 12 PL 57-410 Ścinawka Średnia e-mail [email protected] www.ze

 Open the catalog to page 3
Check valve zCHE Fig.277-4

ends form threaded straight PRESSURE-TEMPERATURE RATINGS Allowed working conditions range PN 16 EN-GJL-250 Data given can be changed without notice. ZETKAMA Sp. z o.o. ul. 3 Maja 12 PL 57-410 Ścinawka Średnia e-mail [email protected] www.zetkama.com 4/5

 Open the catalog to page 4
Check valve zCHE Fig.277-5

ends form threaded straight body material grey cast iron EN-GJL-250 31 loose disc with spring stem, disc and seat ring - stainless steel 38 loose disc with spring stem, disc and seat ring - stainless steel disc gasket PTFE 41 loose disc without spring stem, disc and seat ring - stainless steel ORDERING To place an order please use our product number (index) body material ORDER EXAMPLE check valves, ends threaded, form straight grey cast iron EN-GJL-250 loose disc with spring ● stem, disc and seat ring stainless steel Data given can be changed without notice. ZETKAMA Sp. z o.o. ul. 3 Maja 12 PL...

 Open the catalog to page 5

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