Description
TECHNICAL DATA SHEET
British Standard Resilient Seated Non-Rising Stem Gate Valve
- BASIC VALVE INFORMATION
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Item
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Specyfikacja
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Typ zaworu
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Resilient Seated Gate Valve
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Stem Type
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Non-Rising Stem (NRS)
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End Connection
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Flanged, Raised Face (RF) / Flat Face (FF)
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Rozmiar nominalny
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DN50 – DN600 (2″ – 24″)
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Ocena ciśnienia
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PN10 / PN16 / PN25
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Materiał korpusu
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Ductile Iron / Cast Iron
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Działanie
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Handwheel / T-Key / Bevel Gear
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Service Medium
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Water / Oil / Gas / General Purpose
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- APPLICABLE CODES & STANDARDS
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Standard
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Description
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BS 5163-1 / BS 5163-2
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Specification for resilient-seated gate valves for waterworks purposes
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BS 5150
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Specification for cast iron gate valves (flanged and spindle operated)
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EN 558-1
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Face-to-face dimensions for metal valves for use in flanged pipe systems (PN designated)
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BS EN 1092-2
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Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Part 2: Cast iron flanges
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BS 4504
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Circular flanges for pipes, valves and fittings (PN designated)
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BS 10
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Specification for flanges and bolting for pipes, valves and fittings (Tables D/E)
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BS 6755 / ISO 5208
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Testing of valves – Pressure test requirements
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ISO 7259
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Predominantly key-operated cast iron gate valves for underground use
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WRAS / ACS
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Potable water approval (if required)
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- MATERIALS OF CONSTRUCTION
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Część
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Material
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Standard / Remarks
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Ciało
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Ductile Iron (GGG50) / Cast Iron (GG25)
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EN-GJS-400 / EN-GJL-250
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Bonnet / Cover
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Ductile Iron / Cast Iron
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Same as body
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Gate / Wedge
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Ductile Iron + Fully Encapsulated EPDM/NBR
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100% rubber covered, fusion bonded
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Trzon
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Stainless Steel (AISI 304 / 316)
Brass / Bronze (Optional)
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2Cr13 / SS304 / SS316
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Stem Nut
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Brass / Bronze / Ductile Iron
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High strength, wear resistant
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Seat (Body)
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Integral / EPDM bonded
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Rubber molded to body or gate
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O-Rings / Seals
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EPDM / NBR / Viton
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3 O-rings on stem for blowout proof sealing
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Bolting / Nuts
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Stainless Steel / Zinc Plated Carbon Steel
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A2 / A4 Stainless Steel (for corrosion resistance)
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Gasket (Bonnet)
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O-Ring type / Spiral Wound
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Self-sealing design, pressure energized
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Coating
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Epoxy Coating (FBE)
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Internal & external, RAL 5012 (blue) / RAL 5005, certified for potable water
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Handwheel
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Żeliwo sferoidalne
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With direction indicator (open/close)
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- DESIGN & PERFORMANCE CHARACTERISTICS
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Parametr
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Specyfikacja
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Pressure Class
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PN10 / PN16 / PN25 (as specified)
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Working Pressure
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10 bar / 16 bar / 25 bar
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Shell Test Pressure
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1.5 x Rated Pressure (e.g., PN16 → 24 bar)
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Seat Test Pressure
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1.1 x Rated Pressure (e.g., PN16 → 17.6 bar)
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Low Pressure Seat Test
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5–6 bar – Zero leakage
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Design Temperature Range
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-10°C to +80°C (standard EPDM)
-20°C to +120°C (special compounds)
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Leakage Rate
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Zero leakage (Rate A per ISO 5208 / BS 6755)
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Flow Characteristic
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Full bore, linear (on-off service only)
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Operation Torque
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Low torque design (≤80% of standard requirement)
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Stem Sealing
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3 O-rings + Wiper ring – blowout proof, no external leakage
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Direction of Closing
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Clockwise to close (handwheel)
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Position Indication
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Visual indicator on stem / handwheel (open/close)
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- DIMENSIONS & CONNECTIONS
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Item
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Dimension (mm / inch)
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Flange Standard
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BS EN 1092-2 / BS 4504 / BS 10 Table D/E
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Flange Drilling
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PN10 / PN16 / PN25 drilling (as per EN 1092-2)
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Face-to-Face Length
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EN 558-1 Series 14 (Basic Series 14 for resilient seated gate valves)
Example: DN80 → 203 mm, DN100 → 229 mm, DN150 → 267 mm
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Flange Face
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Raised Face (RF) or Flat Face (FF)
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Overall Height
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Per BS 5163 / Manufacturer standard
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Stem Diameter
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Per BS 5163 Table 4 (minimum requirements)
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Handwheel Diameter
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As per torque requirements
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Weight
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Approx. _____ kg (depending on size)
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- TESTING & INSPECTION
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Test
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Standard / Requirement
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Shell Test
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BS 6755 / ISO 5208 – 1.5 x PN – No visible leakage
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Seat Test (High Pressure)
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1.1 x PN – Zero leakage
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Seat Test (Low Pressure)
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5–6 bar – Zero leakage
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Stem Seal Test
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Visual inspection during operation
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Coating Test
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Holiday detection, thickness measurement (250–300 microns)
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Material Certification
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EN 10204 3.1 / 2.2 (if required)
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WRAS / ACS Approval
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For potable water applications (optional)
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- SPECIAL REQUIREMENTS & REMARKS
- Resilient Seated Design
- Gate is fully encapsulated with EPDM/NBR rubber using injection molding process .
- No exposed metal on gate – ensures 100% bubble-tight shut-off.
- Rubber bonded to ductile iron – no delamination, long service life.
- Non-Rising Stem (NRS)
- Stem does not rise when valve opens/closes.
- Suitable for buried service or limited space installations.
- Stem threads isolated from line media.
- Anti-Corrosion Coating
- Fusion Bonded Epoxy (FBE) coating inside and out.
- Certified for potable water (WRAS / ACS / KTW).
- Color: Blue (RAL 5012) / Black / Custom.
- Blowout-Proof Stem
- Stem retained by shoulder inside body.
- Triple O-ring sealing – no external leakage.
- Zero Leakage Performance
- Resilient seat design ensures tight shut-off even with debris.
- Self-cleaning wedge action.
- Optional Accessories
- T-Key operation (for buried service).
- Extension spindle for deep burial.
- Position indicator / opening limiter.
- Gearbox for larger sizes.
GWARANCJA:
SAVVY VALVES zobowiązuje się do dostarczania wyjątkowej jakości produktów i bezproblemowej obsługi posprzedażowej. Gwarantujemy, że nasze zawory zapewnią minimalny okres eksploatacji wynoszący 12 miesięcy, podczas którego dostarczymy bezpłatnie wszystkie niezbędne części zamienne i szczegółowe instrukcje dotyczące konserwacji. W okresie gwarancyjnym, jeśli wystąpią jakiekolwiek uszkodzenia niespowodowane przez człowieka, wymienimy komponenty bezpłatnie i zapewnimy profesjonalne wsparcie techniczne. Po wygaśnięciu gwarancji klienci muszą zapłacić jedynie za koszt części zamiennych, nadal korzystając z usług konserwacyjnych po obniżonych cenach. Naszym celem jest pomoc klientom w obniżeniu kosztów operacyjnych i zwiększeniu wydajności produkcji dzięki niezawodnej jakości i kompleksowemu wsparciu posprzedażowemu. Niezależnie od tego, czy chodzi o zapytania techniczne, czy potrzeby konserwacyjne, nasz zespół ekspertów odpowie szybko, aby zapewnić, że Twój system zaworów zawsze będzie utrzymywał optymalną wydajność.
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