---
title: Y-type check valve(YLseries)｜ROCKY-ICHIMARU Co., Ltd.
description: This is the Y-type check valve(YLseries) page of ROCKY-ICHIMARU Co., Ltd., which boasts the world’s top share for tire curing press valves.
image: https://www.rocky-ichimaru.co.jp/hubfs/rocky_ichimaru_co_jp/images/ogp.png
---

## Product Overview

![YL1211](https://www.rocky-ichimaru.co.jp/hubfs/rocky_ichimaru_co_jp/images/product/fluid/valve/threaded/yl/YL1211.jpg)

Lift check valve that keeps fluid flow in a constant direction and prevents backflow.

### Download Documents

- [Catalog ](https://www.rocky-ichimaru.co.jp/en/document/download/valve)

## Product Features

### POINT Uses an Angled Seat Structure

Unlike conventional lift check valves, the stem is positioned at an angle, reducing cracking pressure allowing for smoother flow of fluid when the disc is opened.

## Main Specifications

| Fluid | Steam, N2 gas, air, hot & cold water |  |
| --- | --- | --- |
| Maximum working Pressure | 3.2MPa |  |
| Cracking pressure | 0.01MPa |  |
| Maximum working Temperature | 205℃ |  |
| End Connection | 1,2 Port | Threaded（Rc、 NPT） Flanged（JIS20K、 ASME Class 300、 DIN PN40） |

 

## Product Lineup

| Appearance | Model Number | Size | End Connection |
| --- | --- | --- | --- |
| ![YL1211](https://www.rocky-ichimaru.co.jp/hs-fs/hubfs/rocky_ichimaru_co_jp/images/product/fluid/valve/threaded/yl/YL1211.jpg?width=214&height=150&name=YL1211.jpg) | YL1211 | DN15〜DN40 | Threaded |
| ![YL1212](https://www.rocky-ichimaru.co.jp/hs-fs/hubfs/rocky_ichimaru_co_jp/images/product/fluid/valve/threaded/yl/YL1212.jpg?width=214&height=150&name=YL1212.jpg) | YL1212 | DN15〜DN40 | Flanged |

 

## Specialized specification

### Reinforced disc plate (Specialized specification: Z3)

The material of the disc plate is strengthened from standard glass fiber to carbon graphite, which has excellent wear and load resistance.

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