Gas Pressure Regulating Valves

Gas Pressure Regulating Valves

ZZVMP self-regulating type nitrogen seal valve is composed of control valves, actuators and pilot, is a kind of no extra energy, using the pressure as power source, modulated medium itself to automatically adjust the pressure constant of energy-saving products, the valve control is twice precise as general self-reliance type pressure regulating valve, suitable for requiring higher control precision.

Additional information

Description

Model ZZVMP self-regulating type nitrogen seal valve is composed of control valves, actuators and pilot, is a kind of no extra energy, using the pressure as a power source, modulated medium itself to automatically adjust the pressure constant of energy-saving products, the valve control is twice precise as general self-reliance type pressure regulating valve, suitable for requiring higher control precision. (B) after the control valve pressure (K) before the control valve.

Feature

Self-operated pressure regulator applies with the quick-opening flow characteristic, which is quickly acted and highly accurate adjusted, so it can be widely used in many fields like petroleum, chemical, electricity, metallurgy, food, textile, machinery, civilian building, and so on to reduce/release or stabilize the pressure of the gas, steam and liquid and so on.
Cage guided self-operated pressure regulator uses a self-balancing double sealing surface as a throttle member, to prevent from unauthorized change in gas pressure and the medium needs to be cleaned without particulate impurities, which is suitable for large pressure drop, to keep the manifold velocity below 150 misec, prevent vibration and reduce excessive noise emission.

 

Technical Specification

This type is a FAIL TO OPEN type pressure regulator, which means that the main valve will move to the fully open position in the event of diaphragm rupture of main valve or supply pressure is not available.

gas pressure regulating valves
gas pressure regulating valves
Size DN20 ~ DN100
Pressure Rating PN1.6 ~ PN6.4MPa, 150 ~ 300LB Flange
Standard JB/T79.1-94. 79.2-94, ANSI B16.5
Body Material Cast iron, cast steel, stainless steel
Seat Stainless steel+PTFE
Diaphragms NBR, EPR, fiber-reinforced rubber, oil-resistant rubber Diaphragm Cover:  Teflon coated A3, A4 steel sheet
Cage Guided Stem Stainless steel
Noted Regulator has a rust-proof exterior finish
Pressure balancing Stainless steel bellows
Flow characteristic Quick open
Plug type Single-seated, double-seat
Working temperature -29 ~+150°C
Accuracy class AC 10% up to 100 mbar
AC 5% from 100 mbar to 1 bar
AC 2.5% over 1 bar

 

Actuator

Pressure Setting Range: 0.4~0.5, 5~10, 9~14, 13~19, 18~24, 22~28, 27~33, 36~44, 42~51, 49~58,
Spring adjustment screw cap required to protect screw against tempering. Cover with threads protected against corrosion; valve linkage is corrosion resistant.
Spring screws are protected against tampering by means of a suitable screwed seat cap or cover that can be removed without damage.

 

Rated Kv Value · Rated Travel · Adjusting Pressure Range (Sheet 1)

Nominal Diameter DN(mm) 20 25 32 40 50 65 80 100 125 150 200 250 300
 

 

Rated Flow Characteristic Kv

Single- Seated 7 11 20 30 48 75 120 190 300 480 760
Cage Type 7 11 20 30 48 75 120 190 300 480 760
Double- Seated 22 33 53 83 132 209 330 528 836 1210 1925
Rated Travel (mm) 8 10 14 20 25 40 50 60 70
 

Adjusting Pressure Range (kPa)

15~50, 40~80, 60~100, 80~140, 120~180, 160~220, 200~260, 240~300, 280~350, 330~400, 380~450,

430~500, 480~560, 540~620, 600~700, 680~800, 780~900, 880~1000, 950~1100, 1080~1250,

1230~1400, 1380~1550, 1530~1800, 1780~2000, 1980~2300, 2280~2500

 

Main Parameters For Micro-Flow, Single-Seated (Sheet 2)

Nominal Diameter DN(mm) 20, 25
Seat Diameter(mm) 6 7 8 10 12 15
Rated Flow Characteristic Kv 0.01 0.02 0.048 0.06 0.08 0.12 0.2

0.32

0.5 0.8 1.8 2.8 4.4
Rated Travel (mm) 5

 

 

Flow Coefficient(CG): ZZVMP

Size(mm) 25 50 80 100 150 200
CG 428 2000 4000 6300 11000 19291

 

Allowable Velocity:

This type using the balancing hole design, which is used for control velocity and noise. Velocity of gas at regulator outlet flange shall be calculated using the following formula:

V=Q/A=Q/(ΠD2/4)

V is the average fluid velocity in the pipe in ft/sec.

Q is volumetric flow rate (cfs)

A is cross-sectional area of flow=ΠD2

D is the diameter of the pipe in ft

 

Valve Size Maximum Allowable Velocity v [m/s)
2’’ 120
3’’ 125
4’’ 150

One-time business is not our goal, we pursuit for long-term partner relationships.

ASK FOR A QUOTE

We are not just providing simple quotes but experts in selection, calculation, and drawing. 

Joy Preview

ASK FOR QUOTE

Just leave your name, email, and simple message or requirements, We will contact you within 1 hour.

WhatsApp: +86 185 1656 9221

Skype ID: sowell85

Wechat ID: +86 189 5813 8289

Joy Preview

A good partner is a lasting and effective investment

Focused on Control Valves & Self-Operated Pressure Regulators For Over 10 Years

Grow Your Business is Our Top Priority. Contact Now You Will Get More Than You Expect.