Symbol No.

Designation

Code

Description

1

Style

None
H

Standard Model 标准型号
Handwheel Model 带手柄型号

2

Series

V

3

Material

J B S SS

Cast iron 铸铁
Brass 铜
Steel? 钢
Stainless Steel (300 Series Stainless) 不锈钢

4

Connections

None
F

Screw Connections 螺纹连接
法兰连接 300# Flange Class Standard (250# Flange Class - Cast Iron Standard)

5

Size

-2
-3
-4
-5
-6
-7
-8

3/8”
1/2”
3/4”
1”
11/4”
11/2”
2”

6,7,8

ASA Flange Rating

None
-150
-600

300# Flange Standard (no designation required)

9

Flange
Style
150# & 600# Only

A
B
C
D

Raised Face, Staggered Bolt Centers
Smooth Face, Staggered Bolt Centers
Raised Face, Bolts on Valve Centerline
Smooth Face, Bolts on Valve Centerlne

10

O-Ring
Material

R
RV
RS
RT
RA
EPR
RN

Buna O-Ring Cap Seal (standard)
Viton O-Ring Cap Seal
Silicone O-Ring Cap Seal
Teflon O-Ring Cap Seal
Aflas O-Ring Cap Seal
Ethylene Propylene
Neoprene

11

Options

SP
P

Steel Parts (used on cast iron only)
Panel Mount on Handwheel Series

12

Piston
Material

/HS
/SS
/3SS

Hardened Steel
416 Stainless Steel
303 Stainless Steel

13

Spring

/AS
/US
/WS
/XS
/YS
/ZS

14

Setting

Desired Pressure Setting