Self-Closing Valves Malleable Iron Straight With Weight DIN PN 16

TECHNICAL CHARACTERISTICS

Self-closing valves with “weight” are most often used in water or fuel systems, in which the valves are normally “closed”. The valve is opened by lifting the weight, relying on it to subsequently self-close again. The latter is used to avoid “forgetting” the valve in the open state – for process safety. Seal – metal / metal.

WORKING FLUIDS / MEDIUM

Water, thermal oil, fuels, oils, flammable hydraulic oils, non-flammable hydraulic oils, petroleum, boiler feed water, condensate and seawater.

EXECUTION

Other materials upon request

• Steel 1.0619
• Various flange connection standards – ANSI / JIS
• Installation is carried out in a position that ensures the correct operation of the valve (such that when the lifting force ceases, the valve closes itself by gravity).

Dimensions: DN 15 – 80


Description

Our self-closing valves, crafted from high-grade malleable iron, are engineered for superior performance and reliability in demanding industrial applications. Designed to DIN standards and rated for PN 16 pressure, these straight valves ensure automatic shut-off to prevent backflow and enhance system safety. The inclusion of a weighted mechanism guarantees consistent operation, making them ideal for pipelines where fluid control is critical.Key features include:Constructed from durable malleable iron for excellent impact and corrosion resistanceComplies with DIN standards for guaranteed compatibility and safetyRated for PN 16 pressure, suitable for high-pressure environmentsSelf-closing mechanism with weight for reliable, automatic operationStraight design facilitates easy installation and maintenanceThese valves are perfect for use in water supply systems, industrial processing, fire protection networks, and other applications requiring fail-safe fluid control. Their robust construction ensures long service life even under harsh conditions, providing peace of mind and operational efficiency.

Additional Information

 

Materials

No. DETAILS MATERIALS
1 Body gray cast iron EN-JL1040 (GG25)
2 Lid gray cast iron EN-JL1040 (GG25)
3 Saddle stainless steel 1.4301 (AISI304)
4 Valve stainless steel 1.4021 (AISI420)
5 Spindle stainless steel 1.4021 (AISI420)
6 Stuffing box graphite
7 Counterweight lever steel 1.0038 (St37)

Features

Standard DIN
Joining EN 1092-2
Construction length EN 558, series 1
Lid connection bolted
Execution straight
Joining flanged
Management self-closing
Drive linear
T max. °C 120 °C Bar 16 Bar
Dimensions
DN PN L D L1 H Weight (kg)
15 PN 16 130 95 242 159 5
20 PN 16 150 105 242 159 6
25 PN 16 160 115 242 166 7
32 PN 16 180 140 242 166 8
40 PN 16 200 150 292 207 13
50 PN 16 230 165 292 220 15
65 PN 16 290 185 292 226 23
80 PN 16 310 200 292 267 30
100 PN 16 350 220 292 275 40