DIN Ductile Cast Iron Soft Seat Knife Gate Valve Pn10

Customization: Available
Media: Water
Temperature: -20 Degree to 100 Degree

Product Description

Basic Specifications

Model NO.
NRS Knife Gate Valve PN 10/16
Type
Straight-through
Material
Cast Iron
Connection Form
Flange
Pressure
Medium and Low Pressure
Actuator
Manual
Seal Surface
Wedge Gate Valve
Thread Position
Inside Gate Valve
Usage
Regulation, Safety, Flow Control
Standard
BS En 12266-1/Awwa C520
Application
Industrial Usage, Water Industrial Usage
Certificate
UL/FM
Colour
Ral 5005
Specification
DN50-DN600

Packaging & Delivery

Package Size
100.00cm * 100.00cm * 100.00cm
Package Gross Weight
100.000kg
Transport Package
Crate
Origin
China

Product Description

Knife Gate Valve Main View
Technical Summary:
Face To Face: EN 558 S20 MSS SP-81.
Flange Standard: EN1092-2, BS10, T/E, T/D, MSS SP-81
Inspection & testing: BS EN 12266-1/AWWA C520
Working Temperature: -20ºC to 100ºC (-4°F to 212°F)
Detail 1
Detail 2
Detail 3
Detail 4
Detail 5
Detail 6

Material Components

NO. Part Material
1U SeatEPDM
2BodyDuctile Iron
3KnifeSS316
4PackingPTFE
5BoltsStainless Steel
6Packing GlandDuctile Iron
7YokeSS420
8StemSS420
9Stem NutBrass
10HandwheelDuctile Iron

Operation & Maintenance Manual

  • 1. The Face to Face conforms to EN558 or ANSI B16.10, and the flange conforms to EN1092-2, B16.5.
  • 2. Installation is compatible with horizontal or vertical pipelines.
  • 3. Ensure position allows for easy maintenance and replacement.
  • 4. Two-way use is permitted (fluid direction can be ignored).
  • 5. Store in a dry indoor place with the wedge in the open position before installation.
  • 6. Pre-installation checks: Verify performance specs, clean internal surfaces, and check transmission connections.
  • 7. Regular inspections: Check body/bonnet sealing, stem/compression cap integrity, and rotation flexibility.

Troubleshooting Guide

Possible Faults Reasons Solutions
Wedge sealing surface leaksRubber of wedge is damagedReplace the new wedge
Leak between stem and glandO-ring is damaged in the glandReplace the new O-ring
Leak between bonnet and glandO-ring damaged or bolt looseReplace O-ring or tighten bolt
Leak between bonnet and bodyO-ring damaged in the bonnetReplace the new O-ring
Technical Drawing 1
Technical Drawing 2
Gallery 1
Gallery 2
Gallery 3
Gallery 4
Gallery 5
Gallery 6
Gallery 7
Gallery 8
Gallery 9

Casting Defect Inspection Requirements

Standards & Criteria:
  • Surface must be clear with no missing or incorrect characters.
  • Pores or sand holes exceeding 1mm are strictly controlled; less than 2mm may be repaired if not on sealing surfaces.
  • Flash, burrs, and box seams must be polished smooth.
  • Asymmetry between inner cavity and outer shape shall not exceed 1.5mm.
  • Surface roughness: ≤N11~12. Surface cleanliness: ISO8501-Sa2.5.
  • 100% self-inspection by manufacturers followed by 20% random factory inspection.

Frequently Asked Questions (FAQ)

What are the primary applications for this knife gate valve?
This valve is designed for industrial usage and water industrial applications, specializing in regulation, safety, and flow control.
Does this valve support bidirectional flow?
Yes, two-way use is allowed, and the direction of the pipeline fluid can be ignored during installation.
What is the working temperature range?
The valve operates efficiently in temperatures ranging from -20ºC to 100ºC (-4°F to 212°F).
Which certifications does the valve hold?
The NRS Knife Gate Valve is UL/FM certified and meets BS EN 12266-1/AWWA C520 standards.
Can it be installed in different orientations?
Yes, it can be installed on both horizontal and vertical pipelines, provided there is space for maintenance.
What should I do if the wedge sealing surface leaks?
If the leak is caused by damaged rubber on the wedge, the solution is to replace the wedge with a new one.

Related Products