14″-125LB Cast Iron Metal Seated Rising Stem Gate Valve

Nominal Size 14 inches (14″) / DN350
Pressure Class 125 LB (Class 125)
End Connection Flanged Ends
Flange Standard ASME B16.1 Class 125 (Cast Iron Flange, RF/FF)
Face-to-Face Dimension MSS SP-70 / ASME B16.10
Design & Manufacture Standard MSS SP-70
Test & Inspection Standard API 598

Description

TECHNICAL DATASHEET

14″ 125LB Ductile Iron Rising Stem Gate Valve

General Specifications

Item	Specification
Valve Type	Rising Stem Gate Valve (OS&Y)
Nominal Size	14 inches (14″) / DN350
Pressure Class	125 LB (Class 125)
End Connection	Flanged Ends
Flange Standard	ASME B16.1 Class 125 (Cast Iron Flange, RF/FF)
Face-to-Face Dimension	MSS SP-70 / ASME B16.10
Design & Manufacture Standard	MSS SP-70
Test & Inspection Standard	API 598

Design Parameters

Item	Unit/Standard	Parameter
Max. Allowable Pressure	psi	200 psi @ Saturated Steam / 175 psi @ WOG (Non-Shock)
Service Media	–	Water, Oil, Gas (WOG) or Steam (depending on conditions)
Operating Temperature	°C / °F	-29°C to 220°C (-20°F to 430°F)
Operation	–	Handwheel / Gearbox (Recommended for this size)

Material of Construction (M.O.C.)

Part Name	Material Required	Standard / Grade (Ref.)
1. Body	Ductile Iron (DI)	ASTM A536 (60-40-18) or ASTM A395
2. Bonnet	Ductile Iron (DI)	ASTM A536
3. Wedge (Gate)	Ductile Iron (DI) with Bronze seat face	ASTM A536, Bronze overlay/inlay on seat faces
4. Seat Ring (Seat Face)	Bronze	ASTM B62 (C83600) or ASTM B61
5. Stem	Stainless Steel	ASTM A276 Type 410 / 304 / 316
6. Stem Nut	Bronze / Aluminum Bronze	High-strength wear-resistant alloy
7. Packing	Flexible Graphite / PTFE	–
8. Gasket	Non-asbestos fiber / Graphite	–
9. Bolts/Nuts	Carbon Steel	ASTM A307 Grade B / A194 2H (Zinc plated)
10. Handwheel	Ductile Iron / Malleable Iron	–

Main Dimensions (Reference)

Note: Dimensions for reference only. Final dimensions to be verified per manufacturer’s drawing. (Unit: mm / inch)

Description	Dimension (mm)	Dimension (inch)	Remarks
Face-to-Face (L)	584	23.0	Per MSS SP-70 / ASME B16.10
Flange Diameter (D)	470	18.5	ASME B16.1 Class 125
Bolt Circle Diameter (C)	419.1	16.5	ASME B16.1 Class 125
Bolt Holes (n-ød)	12-ø25.4	12-1.0″	12 holes
Flange Thickness (T)	32	1.26	ASME B16.1 Class 125
Handwheel Diameter (W)	Approx. 500	Approx. 19.7	Varies by manufacturer; gearbox recommended
Top-to-Open Height (H)	Approx. 1100	Approx. 43.3	From stem top to handwheel (Reference)
Approx. Weight	450 kg	990 lbs	Estimated, varies by manufacturer

Inspection & Testing (API 598)

Test Description	Medium	Pressure (psi)	Requirement
Shell (Hydrostatic)	Water	300	No visible leakage
Seat (High Pressure)	Water	220	Leakage Rate: Class D (or as specified)
Backseat Test	Water/Air	As required	No visible leakage
Low Pressure Pneumatic	Air	60 – 80	Optional, leakage rate ≤ specified rating

Options & Accessories

Item	Options
Stem Upgrade	17-4PH / Monel / Inconel / AISI 316
Wedge Material	Full Stainless Steel / Nickel-Coated Ductile Iron
Operation	Gearbox (Recommended for 14″) / Electric Actuator / Pneumatic Actuator / Extension Stem
Flange Facing	Flat Face (FF) or Raised Face (RF) to match counter flange
Coating	Epoxy Coated (Blue RAL 5005 or Black), min. thickness 250μm per AWWA C550
By-Pass	By-Pass Assembly (for pressure equalization)
Position Indicator	Rising stem provides visual indication; optional limit switch for actuated versions

Notes / Remarks:

Pressure Rating: Class 125 per ASME B16.1 standard. Maximum allowable working pressure is 175 psi for WOG (Water, Oil, Gas) and 200 psi for saturated steam at ambient temperature.
Seat Design: Bronze seat faces are achieved by overlaying (welding) or inserting bronze rings on both body and wedge, ensuring corrosion resistance and long service life.
Stem Design: Outside Screw and Yoke (OS&Y) design isolates the stem threads from the media, allowing in-line maintenance and providing visual indication of valve position.
Gearbox Recommendation: Due to the large size (14″), a gearbox operator is strongly recommended for ease of operation and to reduce manual effort.
Applicable Standards: This datasheet is based on MSS SP-70 and ASME standards. Please confirm specific standard revisions and project special requirements before procurement.

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.

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