Check valve 704
DN40-600, PN10-63
Own production
Certificates and full package of documents
Production time from 20 days
Technical Specifications
-
Nominal diameter
— DN 40-600
-
Nominal pressure
— PN 10-63
-
Medium temperature
— -60 °C ... +540 °C
-
Types of Valve End Connections
— Welded, Flanged, Socket
-
Leakage Class
— «А»
-
Warranty Period
— 12 months
-
Mounting Position
— Any, except for downward-driven devices
-
Types of Control
— — manual (lever) — manual (handwheel) — pneumatic actuation
— electric actuation
-
Average Service Life
— 10 000 cycles
-
Guaranteed Service Life
— Not less than 5000 cycles
Technical Drawings and Dimensions
Nominal diameter PN16
Table of Basic Dimensions
| DN, mm |
D, mm |
D1, mm |
D2, mm |
L, mm |
b, mm |
f, mm |
n-ød, mm |
|---|---|---|---|---|---|---|---|
| 50 | 165 | 125 | 102 | 230 | 16 | 3 | 4-18 |
| 65 | 185 | 145 | 122 | 290 | 18 | 3 | 4-18 / 8-18 |
| 80 | 200 | 160 | 138 | 310 | 20 | 3 | 8-18 |
| 100 | 220 | 180 | 158 | 350 | 20 | 3 | 8-18 |
| 125 | 250 | 210 | 188 | 400 | 22 | 3 | 8-18 |
| 150 | 285 | 240 | 212 | 480 | 24 | 3 | 8-22 |
| 200 | 340 | 295 | 268 | 550 | 26 | 3 | 12-22 |
| 250 | 406 | 355 | 320 | 650 | 30 | 3 | 12-26 |
| 300 | 460 | 410 | 378 | 750 | 30 | 4 | 12-26 |
| 350 | 520 | 470 | 430 | 850 | 34 | 4 | 16-26 |
| 400 | 580 | 525 | 482 | 950 | 36 | 4 | 16-30 |
Product Description
Check valve model 704 is designed to ensure unidirectional flow in systems where the following factors are critical:
- High operational reliability
- Long service life
- Resistance to aggressive media and harsh working conditions
The valve’s design allows for quick and simple maintenance, resulting in minimized operational downtime and reduced maintenance costs.
Design features of the model:
- Suitable for high-pressure installations
- Easy servicing thanks to modular construction
- Springless version (swing check valve) – the closing element (disc) swings freely under the flow and closes automatically when flow stops
Working media:
- Aggressive and non-aggressive liquids
- Petroleum products
- Alkalis
- Acids
- Water, steam
Body / disc materials:
🔹 Carbon steels
- A216 WCB (1.0619, GP240GH)
- A216 WCC (1.1131)
🔹 Low-alloy steels
- A352 LCC (~1.6220 / 16MnMo5)
- A352 LCB (~P355NL1 / 1.0566), LC1
- A217 WC6 (1.7363 / 13CrMo4-5)
🔹 Stainless steels (corrosion-resistant)
- A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
- A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
- A351 CF3 (1.4306) / AISI 304L / A182 F304L
- A351 CF3M (1.4409) / AISI 316L (1.4404)
- AISI 904L (1.4539)
- AISI 316Ti (1.4571)
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