American Standard Cast Iron Gate Valves Z41t-125b Manual Flange DN50 DN500 ANSI

• Customization: Available
• Media: Oil
• Temperature: Ordinary Temperature
• Model NO.: DN50-DN300
• Type: Direct-acting
• Material: Cast Iron
• Connection Form: Flange
• Pressure: Ordinary Pressure
• Actuator: Manual
• Seal Surface: Wedge Gate Valve
• Thread Position of Valve Rod: Inside Gate Valve
• Usage: Regulation, Safety, Emptying, Drain, Temperature Control, Flow Control
• Standard: DIN
• Application: Industrial Usage, Water Industrial Usage
• Transport Package: Wood Box
• Specification: DN50-350
• Trademark: YAOFA
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000piece /Year

Product Description

Company Profile

Specification

Applications

American standard cast iron gate valves refer to gate valves made of cast iron that comply with relevant American standards. The following is a detailed introduction:
Standards and Specifications
American standard cast iron gate valves are typically designed and manufactured in accordance with standards such as the American National Standard ANSI B16.34, and the American Petroleum Institute standards API 6D and API 600. They adhere to corresponding requirements in terms of pressure ratings, dimensional specifications, material properties, etc.
Structural Features
Stem Types
They can be divided into two types: outside screw and yoke (OS&Y) gate valves and inside screw (IS) gate valves.

For OS&Y gate valves, the gate moves linearly with the stem. The stem has trapezoidal threads, and the rotational motion is converted into linear motion through a nut at the top of the valve and guide grooves on the valve body.
For IS gate valves, the stem nut is integrated into the gate. The handwheel drives the stem to rotate

Technical Specifications

Parameter	Description/Common Options
Nominal Size (NPS)	1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 6", 8", 10", 12", 24" (DN15–DN600+)
Pressure Class (LB)	125LB (low pressure), 150LB (medium pressure), 300LB (high pressure; rare for cast iron)
Connection Types	- Flanged (ANSI B16.5/ASME B16.47) - Threaded (NPT, ≤NPS 2") - Wafer (rare) - Welded (rare for cast iron)
Structural Forms	-OS&Y (Outside Screw & Yoke): Exposed stem, visual position indication -IS (Inside Screw): Compact, stem not exposed -Wedge Gate: Single/double (elastic) for tight sealing -Parallel Gate: For low-pressure, large-diameter applications
Sealing Materials	Copper alloy (T), rubber (X), stainless steel (H), body-seal (W)
Media Compatibility	Water, steam, oil, gases; corrosive media require special linings/seals
Temperature Range	-29°C ~ 232°C (typical for cast iron; varies by manufacturer)
Material	Cast iron (common), ductile iron (for higher strength)

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.